To sort an array of objects by a checkbox selection in a column using a custom pipe in Angular, you can modify the checkbox-selection.pipe.ts file as follow
Custom Pipe (checkbox-selection.pipe.ts)

To generate pipe, use the following comment.

ng g p CheckboxSelectionPipe
    g- stands for generate
    p- stands for pipe

CheckboxSelectionPipe - use your custom pipe name instead of [checkboxslectionpipe]

In Pipe declaration, we can define the filter's name (pipe); when the pipe is true, the pipe is pure, meaning that the transform() method is invoked only when its input arguments change. Pipes are pure by default.

In the transform() method, we can pass the array which needs to be filtered.

Code Explanation
In the SelectedItems array, we will filter the collection based on the selected property in the collection. If the selected property was setted to true means, it will filter into SelectedItems.
In the UnSelectedItems array, we will filter the collection based on the selected property in the collection. If the selected property was setted to false means, it will filter into UnSelectedItems.

Here I have used the spread operator (...) that will allow us to quickly copy all or part of an existing array or object into another array or object.

While returning, it will merge Selected and unselected items.
@Pipe({
  name: 'orderByCheckboxSelection',
  pure:false

})
export class CheckboxSelectionPipe implements PipeTransform {

  transform(list: any): any {
    if (!list) {
      return [];
    }

    // Sort the items based on whether they are selected or not
    let selectedItems = list.filter(item => item.selected);
    let unselectedItems = list.filter(item => !item.selected);

    return [...selectedItems, ...unselectedItems];
  }

}

App.Module.ts for a particular module
Register the custom pipe in the module where you want to use it. For example, open the app.module.ts file and import and add CheckboxSelectionPipe to the declarations array.
@NgModule({
  declarations: [....,....],
  imports: [
    CheckboxSelectionPipe
  ],
  providers: [ ....]

App.Component.html
By providing the CheckBoxSelection pipe to the array needed to sort, you can sort the array based on that property's checkbox selection.
<div *ngFor="let date of collection | orderByCheckboxSelection ">
 ....
....
</div>

You can take the following actions to handle the provided JSON example dynamically in an Angular application:
"Data": ["confidence": 0.9983, "label": "height", "value": "5 FT 7 IN"; "confidence": 0.9971, "label": "squad", "value": "Team A"

Step 1
Create an Angular component: Run the ng produce component dynamicHandling command to create a new component using the Angular CLI.

Step 2
Import the HttpClientModule from @angular/common/http in the app.module.ts file to initiate HTTP queries.
'@angular/common/http' import HttpClientModule;

export class AppModule @NgModule("imports: [ HttpClientModule ], //...")

Step 3
To retrieve the JSON data, send an HTTP request: Import the HttpClient and issue an HTTP GET request to the component's TypeScript file (dynamic-handling.component.ts) to obtain the JSON data.

Component, OnInit, import from '@Angular/core';
'@angular/common/http' import HttpClient;

@Component('app-dynamic-handling', './dynamic-handling.component.html', and './dynamic-handling.component.css') export class DynamicHandlingComponent implements OnInit with the following parameters: jsonData: any;
  private http: HttpClient constructor

  This.http.getany>('your_api_endpoint') in ngOnInit() returns void.(data => subscribe) this.jsonData = data.Data; ); ;


Step 4
To loop through the JSON data in the template, use ngFor: Utilize the ngFor directive in the component's HTML file (dynamic-handling.component.html) to cycle through the jsonData array and dynamically display the results.

"let item of jsonData" in the div *ngFor attribute.'item.label': 'item.value' '/p' '/div'

Step 5
Include the element in the primary template: To display the dynamic handling component, include the app-dynamic-handling> and /app-dynamic-handling> tags in the app.component.html file.
App-dynamic-handling in div, app-dynamic-handling out of div.

The real API endpoint from which you may obtain the JSON data should be substituted for "your_api_endpoint" in Step 3.

As indicated in Steps 2 and 5, be sure to import the HttpClientModule into the app.module.ts file and include the dynamic handling component in the app.component.html main template.

Once the component and template have been configured, the Angular application will issue an HTTP request to retrieve the JSON data and use the ngFor directive in the template to dynamically display the information.

To sort an array of objects by a particular date column in ascending or descending order using a custom pipe in Angular, you can modify the date-sort.pipe.ts file as follows:
Custom Pipe (date-sort.pipe.ts)

In Pipe declaration, we can define the name of the filter (pipe), When pipe is true, the pipe is pure, meaning that the transform() method is invoked only when its input arguments change. Pipes are pure by default.

In the transform() method, we can pass the array which needs to be filtered. Property parameter can as based on which date column we need to sort; ordering 'asc' | 'desc' can be also passed.

@Pipe({
  name: 'orderByDate',
  pure:false

})
export class OrderByDatePipe implements PipeTransform {

  transform(array: any[], property: string, order: 'asc' | 'desc'): any[] {
    if (!Array.isArray(array) || !property) {
      return array;
    }

    array.sort((a, b) => {
      const dateA = new Date(a[property]);
      const dateB = new Date(b[property]);

      if (order === 'asc') {
        return dateA.getTime() - dateB.getTime();
      } else {
        return dateB.getTime() - dateA.getTime();
      }
    });

    return array;
  }
}

App.Module.ts for a particular module

Register the custom pipe in the module where you want to use it. For example, open the app.module.ts file and import and add OrderByDatePipe to the declarations array:
@NgModule({
  declarations: [....,....],
  imports: [
    OrderByDatePipe
  ],
  providers: [ ....]

For use across Application

1. We can use Share.Module.ts, Register the custom pipe in share module,
@NgModule({
  declarations: [
    OrderByDatePipe
  ],
  imports: [
    CommonModule
  ]
  ,exports:[
   OrderByDatePipe

  ]
})

2. We can import ShareModule in whether we want to use it inside any module.
@NgModule({
  declarations: [...,.... ],
  imports: [
    .....
    SharedModule,
    ....
  ],
  providers: [ .....]

App.Component.html
    In your component's template, pass the desired date column and order ('asc' or 'desc') as parameters to the OrderByDatePipe :
    Make sure to replace 'scheduleStartDate' with the actual name of the date column in your array of objects.

By providing the specific property/column to the orderByDate pipe, you can sort the array based on that property's date values in either ascending or descending order.
<div *ngFor="let schedule of CurrentSchedule | orderByDate:'scheduleStartDate':'asc'">
 ....
....
</div>
 <div *ngFor="let schedule of CurrentSchedule | orderByDate:'scheduleStartDate':'desc'">
 ....
....
</div>

Web Sockets
Web sockets are a protocol that facilitates bidirectional, full-duplex communication between clients and servers over a single, persistent connection. In contrast to conventional HTTP requests, which are stateless and request-response based, web sockets enable event-driven communication in real time. They are especially useful for applications requiring real-time updates, such as messaging applications, collaborative tools, and real-time dashboards.

Setting Up an Angular Project
To begin using web sockets in Angular, we must create a new project. Let's utilize the Angular CLI to scaffold the application's structure and install any necessary dependencies. Open your terminal or command prompt and proceed as follows:

Install Angular CLI if it is not already installed.

npm install -g @angular/cli

Step 2. Create a new Angular project.
ng new websocket-demo
cd websocket-demo

Establishing a Web Socket Connection
Now that we have our Angular project set up let's establish a web socket connection. We'll create a service that wraps the WebSocket API and handles the connection lifecycle. Open the terminal/command prompt and navigate to the project's root directory. Then, follow these steps.

1. Generate a WebSocket service.
ng generate service websocket

2. Open the newly generated service file (websocket.service.ts) and replace its content with the following code.
import { Injectable } from '@angular/core';

@Injectable({
  providedIn: 'root'
})
export class WebsocketService {
  private socket: WebSocket;

  constructor() { }

  connect(): void {
    this.socket = new WebSocket('wss://your-websocket-url');

    this.socket.onopen = () => {
      console.log('WebSocket connection established.');
    };

    this.socket.onmessage = (event) => {
      console.log('Received message:', event.data);
    };

    this.socket.onclose = (event) => {
      console.log('WebSocket connection closed:', event);
    };

    this.socket.onerror = (error) => {
      console.error('WebSocket error:', error);
    };
  }

  sendMessage(message: string): void {
    this.socket.send(message);
  }

  closeConnection(): void {
    this.socket.close();
  }
}

3. Replace 'wss://your-websocket-url' in the connect() the method with the actual WebSocket URL you want to connect to.

Sending and Receiving Data
With our web socket service in place, we can now send and receive data between the client and server. Open the component where you want to use the web socket service (e.g., app.component.ts) and follow these steps.

Import the WebSocket service
import { Component } from '@angular/core';
import { WebsocketService } from './websocket.service';

@Component({
  selector: 'app-root',
  template: `
    <button (click)="sendMessage()">Send Message</button>
  `
})
export class AppComponent {
  constructor(private websocketService: WebsocketService) {}

  sendMessage(): void {
    const message = 'Hello, WebSocket!';
    this.websocketService.sendMessage(message);
  }
}

In the same component file (e.g., app.component.ts), add the following code to receive messages from the server.
@Component({
  // Component configuration...
})
export class AppComponent implements OnInit {
  receivedMessages: string[] = [];

  constructor(private websocketService: WebsocketService) {}

  ngOnInit(): void {
    this.websocketService.connect();
    this.websocketService.messageReceived.subscribe((message: string) => {
      this.receivedMessages.push(message);
    });
  }

  sendMessage(): void {
    const message = 'Hello, WebSocket!';
    this.websocketService.sendMessage(message);
  }
}

In the component template (app.component.html), display the received messages.
<button (click)="sendMessage()">Send Message</button>

<ul>
  <li *ngFor="let message of receivedMessages">{{ message }}</li>
</ul>

Now, when the sendMessage() the method is called, it will send a message to the server using the web socket service. The received messages from the server are stored in the receivedMessages array and displayed in the component template.

Handling Errors and Disconnections
To handle errors and disconnections gracefully, let's make some modifications to our existing code. Open the websocket.service.ts file and follow these steps,

-  Import the Subject class from RxJS to handle the stream of received messages. Add the following line at the top of the file after the existing imports.
import { Subject } from 'rxjs';

-  Inside the WebsocketService class, declare a new messageReceived property of type Subject<string>. This will be used to emit and subscribe to the received messages:
messageReceived: Subject<string> = new Subject<string>();

-  In the onmessage event handler, modify the code to emit the received message through the messageReceived subject.
this.socket.onmessage = (event) => {
  const message = event.data;
  console.log('Received message:', message);
  this.messageReceived.next(message);
};

By implementing these changes, we are now using the messageReceived subject to emit and subscribe to the received messages in our Angular component. This allows us to handle and display the messages in real time.

In this article, we have explored how to implement web sockets in an Angular project to enable real-time communication between clients and servers. We covered the fundamentals of web sockets, including setting up an Angular project, establishing a web socket connection, sending and receiving data, and handling errors and disconnections.

In current day, data is everywhere and is an important part of our lives. We collect, send, analyse, and do lots of other things with data. Data in itself is not visually appealing, but we can make it beautiful. Chart is one such thing that can make data look beautiful & easier to understand / analyse. We can use different chart types to show data depending on the type of data we are showing. In this article, we will see how to add, configure and use different chart types in Angular using CanvasJS angular charts.

Adding CanvasJS angular chart to project
Let's start by adding CanvasJS angular chart component to the project. Download the component from the official download page. Copy the chart component files to the project. Generally, these files are kept under assets directory. Once it's copied, import & register the modules.
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';

import * as CanvasJSAngularChart from './assets/canvasjs.angular.component';
var CanvasJSChart = CanvasJSAngularChart.CanvasJSChart;

@NgModule({
  declarations: [
    AppComponent,
    CanvasJSChart
  ],
  imports: [
    BrowserModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

As the modules are registered, you can start creating chart. Let's create & display simple column chart in angular.
import { Component } from '@angular/core';

@Component({
  selector: 'app-root',
  template: '<canvasjs-chart [options]="chartOptions"></canvasjs-chart>'
})
export class AppComponent {
    chartOptions = {
      title: {
          text: "Angular Column Chart"
      },
      data: [{
        type: "column",
        dataPoints: [
            { label: "apple",  y: 10  },
            { label: "orange", y: 15  },
            { label: "banana", y: 25  },
            { label: "mango",  y: 30  },
            { label: "grape",  y: 28  }
        ]
      }]
    }
}

Here we first imported the CanvasJS chart component & then define the options for the chart. CanvasJS takes data to be plotted along with other chart element customization options as 'chart-options'. In the above example, you can observe labels are passed to each datapoint which are shown below every bar (vertical bar charts are called as column chart). The same can be changed to horizontal bar or line or pie by just changing type property. The data is an array of objects where each dataseries is an object - this means if you pass multiple objects, it creates chart with multiple series.

Line Chart
Line chart is a way to represent data in the form of line. Often they are used to show the trend or to compare two different data sets. In the above simple chart that you created, just change type property to 'line' & that should create a line chart instead of column. CanvasJS has different kinds of lines - regular line, spline (similar to line except that the line is smooth), step-line (similar to line but line is in the form of steps/staircase).
chartOptions = {
  title: {
      text: "Angular Line Chart"
  },
  data: [{
    type: "line",
    dataPoints: [
        { label: "apple",  y: 10  },
        { label: "orange", y: 15  },
        { label: "banana", y: 25  },
        { label: "mango",  y: 30  },
        { label: "grape",  y: 28  }
    ]
  }]
}

Just by filling the region between the base and the datapoints value, it create area chart. Component supports different area forms like area, range area, stacked area & gets clubbed with different types of line to create more combinations.

Bar Chart
In bar chart, data is represented in the form of rectangles - vertical bars / horizontal bars. Syntax is same as line but type field takes different value. Bars can be vertical called column chart or horizontal called bar chart. CanvasJS angular component has different kinds of bar charts like bar, range bar, stacked bar, stacked bar 100%, column, range column, stacked column, stacked column 100% & waterfall.
chartOptions = {
  title: {
    text: "Angular Bar Chart"
  },
  data: [{
  type: "bar",
  dataPoints: [
    { label: "apple",  y: 10  },
    { label: "orange", y: 15  },
    { label: "banana", y: 25  },
    { label: "mango",  y: 30  },
    { label: "grape",  y: 28  }
  ]
  }]
}

Pie Chart
Pie chart is probably the most commonly used chart where datapoint is represented as slices of the pie. Each slice will show the relational proportion between the data. Pie chart can further be modified to have a hollow space in the centre making it look like a donut & hence this type of chart is called doughnut / donut chart.
chartOptions = {
  title: {
    text: "Angular Pie Chart"
  },
  data: [{
  type: "pie",
  dataPoints: [
    { label: "apple",  y: 10  },
    { label: "orange", y: 15  },
    { label: "banana", y: 25  },
    { label: "mango",  y: 30  },
    { label: "grape",  y: 28  }
  ]
  }]
}

Financial Chart
Financial chart is generally used to show the stock data / trades. These are most commonly used chart type in stock, forex, shares, etc. These charts will generally be dynamic charts - keeps updating latest data automatically by fetching data from some API.
chartOptions = {
  title: {
    text: "Angular Financial Chart"
  },
  data: [{
  type: "candlestick",
  dataPoints: [
    { label: "Jan", y: [1341.55, 1503.21, 1341.55, 1434.22] },
    { label: "Feb", y: [1462.00, 1532.10, 1271.00, 1339.32] },
    { label: "Mar", y: [1351.60, 1410.15, 1013.53, 1162.81] },
    { label: "Apr", y: [1122.00, 1359.98, 1079.81, 1348.66] },
    { label: "May", y: [1328.50, 1441.00, 1299.00, 1428.92] },
    { label: "Jun", y: [1418.39, 1475.94, 1347.01, 1413.60] },
    { label: "Jul", y: [1411.09, 1586.98, 1409.81, 1482.95] },
    { label: "Aug", y: [1486.64, 1659.21, 1458.65, 1634.18] },
    { label: "Sep", y: [1636.63, 1733.18, 1406.55, 1469.59] },
    { label: "Oct", y: [1484.27, 1687.00, 1436.00, 1621.01] },
    { label: "Nov", y: [1628.16, 1818.06, 1616.03, 1760.73] },
    { label: "Dec", y: [1774.36, 1847.19, 1699.00, 1751.88] }
  ]
  }]
}

More Chart Types & Additional Examples
You can check out CanvasJS angular charts gallery page where more working examples are shown with varieties of use-cases & customization. Also complete customization options can be found on CanvasJS's documentation section.

Conclusion
CanvasJS angular chart component makes it easy to showcase varieties of chart types in your application and dashboard. It also supports dynamic charts making it easier to automate to show latest data always.

Binding is basically the process of connecting data between the view of your application and it's code behind.
In Angular, the view of the application is the HTML page and the code behind is the Component class written in typescript code.
 
There are different types of data binding in Angular,
 
Component to View using interpolation
This is one of the ways of bindings provided by the Angular framework. For this one, we need to have a class level property in our Component class which we use in our HTML using double curly braces.
 
For example, the below code snippet shows a piece of code in the component class. There are 3 properties: department, imgURL and
showspinner, out of which imgURL and showspinner are already initialized, whereas department is just declared.
    department: Any;  
    imgURL: string = "assets/photos/Department.jpg";  
    showSpinner: boolean = false;   

In our HTML file, these properties are used inside double curly braces to render these values directly on the browser. In our case, the imgURL represents the source of the image so that has to be used in the below manner, as shown in the below code snippet.
    <image src = {{imgURL}} >  

When the application gets rendered on the browser, {{imgURL}} gets replaced by assets/photos/Department.jpg.
 
In the real time application, this property is initialized dynamically at runtime.
 
Component to View using property binding
Just like interpolation, this is another type of one way binding. Just like the prior one, in property binding also, we need a class level property that has to be bound with an HTML control on the View. However, the syntax is a little different.
 
Let's use the same example to apply to property binding.
    department: Any;  
    imgURL: string = "assets/photos/Department.jpg";  
    showSpinner: boolean = false;  

To use the property binding we need to use the below syntax. We need to enclose the property of the HTML control inside the square braces and enclose the Component property inside the quotes.
    <image [src] = 'imgURL' >  

Note
While rendering the data on UI, interpolation converts the data into string, whereas property binding does not change the type and renders it as it is.
 
View to Component using event binding
 
This type of binding is used to bind data from View to Component i.e. from the HTML page to the Component class. This one is similar to the events of simple javascript. It can either be a simple click event, a keyup, or any other. The only difference is that the events in Angular have to be put inside circular braces, the rest all is same.
 
As shown in the below code snippet, there are 3 buttons with their respective click events. The methods handling those events are in the code behind file.
    <button (click) = 'addDepartment()' >Add </button>  
    <button (click) = 'editDepartment()' >Edit </button>  
    <button (click) = 'deleteDepartment()' >Delete </button>  

To Bind View and Component Simultaneously (two-way binding)
 
This type of binding is a little different from other frameworks. The two-way binding keeps the property in the Component class and the value of the HTML control in sync. Whenever we change the value of HTML control, the value of the property of the Component class also
changes.
 
To implement this type of binding in Angular, we use a special directive with a little bit different of a syntax.
    <input required [(ngModel)] = 'departmentName' name = 'departmentName' >  

As you can see in the above code snippet, a directive ngModel has been used inside 2 types of braces. The two braces signify two different bindings. The square brace is for property binding that we discussed as the second type and the circular is for event binding, the third one
that we discussed.
 
Lets talk a little about this textbox, whenever there is any change in the value of this textbox an event gets triggered, and by means of the event binding the value gets passed to the Component property and it gets updated and similarly whenever there is any change in the property value, the value of the textbox will also get updated by means of property binding.

The Component property associated with this textbox in the above code is departmentName.
 
Take an example, when we are fetching some data by making an API call, at the beginning the textbox won't have any value but as soon as the value of the property in the Component class gets updated, the value of textbox will also get updated simultaneously.
 
Note
In order to use [(ngModel)] for two-way binding, the name attribute is a must. The Angular framework internally uses the name attribute to map the value of HTML control with the Component property.

HostForLIFE.eu AngularJS Hosting
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In this post, let me explain you how to create strong password for AngularJS. For choosing a password we need combination of special characters, Capital letter , small letters, digits etc to make it strong. Write the following code:

    <!DOCTYPE html> 
    <html> 
    <head> 
        <title>Strong Password for Angular UI Pages</title>            
        <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.8/angular.min.js"></script>   
        <script> 
            var app = angular.module("myApp", []); 
            app.controller("myCtrl", function ($scope) {        
                var strongRegularExp = new RegExp("^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#\$%\^&\*])(?=.{8,})");        
                var mediumRegularExp = new RegExp("^(((?=.*[a-z])(?=.*[A-Z]))|((?=.*[a-z])(?=.*[0-9]))|((?=.*[A-Z])(?=.*[0-9])))(?=.{6,})");        
                $scope.checkpwdStrength = { 
                    "width": "150px", 
                    "height": "25px", 
                    "float": "right" 
                };        
                $scope.validationInputPwdText = function (value) { 
                    if (strongRegularExp.test(value)) { 
                        $scope.checkpwdStrength["background-color"] = "green"; 
                        $scope.userPasswordstrength = 'You have a Very Strong Password now'; 
                    } else if (mediumRegularExp.test(value)) { 
                        $scope.checkpwdStrength["background-color"] = "orange"; 
                        $scope.userPasswordstrength = 'Strong password, Please give a very strong password';  
                    } else { 
                        $scope.checkpwdStrength["background-color"] = "red"; 
                        $scope.userPasswordstrength = 'Weak Password , Please give a strong password'; 
                    }                  
};        
           }); 
        </script> 
    </head> 
    <body ng-app="myApp"> 
        <div ng-controller="myCtrl" style="border:5px solid gray; width:800px;"> 
            <div> 
                <h3>Strong Password for Angular UI Pages </h3> 
            </div> 
            <div style="padding-left:25px;">                  
<div ng-style="checkpwdStrength"></div> 
                <input type="password" ng-model="userPassword" ng-change="validationInputPwdText(userPassword)" class="class1" /> 
                <b> {{userPasswordstrength}}</b> 
            </div> 
            <br /> 
            <br /> 
            <br /> 
        </div> 
    </body> 
    </html> 

HostForLIFE.eu AngularJS Hosting
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In this tutorial, I will tell you about $http in AngularJS. I am gonna show you AngularJS Basic Filters. $http is a service for reading data from web services. It will use get (service URL) method for the process. Now, write the following code:

<div ng-app="httpApp" ng-controller="httpController"> 
     <ul> 
        <li ng-repeat="det in details">{{ det.name + ', ' + det.countrycode }} 
</li> 
    </ul> 
</div>

In the below code, we've an Angular app httpApp and a controller httpController. currently we want to make our controller part, right?
    < script > 
    var app = angular.module('httpApp', []); 
    app.controller('httpController', function($scope, $http) {          $http.get("http://api.geonames.org/citiesJSON?north=44.1&south=-9.9&east=- 22.4&west=55.2&lang=de&username=demo") 
            .success(function(response) { 
            $scope.details = response.geonames; 
        }); 
    }); < /script> 

In the preceding code we are using the $http.get() technique of Angular. within the url part we've got given a sample web service url of geo data. you'll get these free net services here. So within the success part we tend to are returning the response of the web service. Now if you write the response.geonames within the success in the browser console as follows, you'll get the array as shown on the following code:
console.log(response.geonames); 

Once it is returned we are showing the response data to the UI using the repeat directive.
And here is the complete HTML
    <!DOCTYPE html> 
    <html 
        xmlns="http://www.w3.org/1999/xhtml"> 
        <head> 
            <title>Angular $http</title> 
            <style> 
             li { 
                border: 1px solid #ccc; 
                border-right: none; 
                border-left: none; 
                padding: 2px; 
                text-align: center; 
                list-style:none; 
              }  
             </style> 
            <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script> 
       </head> 
        <body> 
            <div ng-app="httpApp" ng-controller="httpController"> 
                <ul> 
                    <li ng-repeat="det in details">{{ det.name + ', ' + det.countrycode }} </li> 
                </ul> 
            </div> 
           <script>  
                var app = angular.module('httpApp', []); 
                app.controller('httpController', function ($scope, $http) { 
                $http.get("http://api.geonames.org/citiesJSON?north=44.1&south=-9.9&east=-22.4&west=55.2&lang=de&username=peter") 
                .success(function (response) {  
                   $scope.details = response.geonames;  
                   console.log(response.geonames); 
                   }); 
             }); 
             </script> 
        </body> 
    </html> 

You can add the following CSS to your page.
    < style > li { 
        border: 1px solid#ccc; 
        border - right: none; 
        border - left: none; 
        padding: 2px; 
        text - align: center; 
        list - style: none; 
    } < /style>

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Today, let me tell you about binding table with JSON String using Angular.This is a really easy Javascript function, that helps to convert Json String to a hypertext mark-up language Table by using AngularJS Frameworks. Define a well structured Json string as shown below, this Json string contains the information of two IT departments with the following code:

var dept1 = {  
    "data": [{  
            "Name": "Robert",  
            "City": "London",  
            "Country": "United Kingdom"  
    },  
            {  
            "Name": "Scott",  
            "City": "Manchester",  
            "Country": "United Kingdom"  
    },  
            {  
            "Name": "Rebecca",  
            "City": "Liverpool",  
            "Country": "United Kingdom"  
    },                    
            {  
            "Name": "Peter",  
            "City": "Bristol",  
            "Country": "United Kingdom"  
    },                    
            {  
            "Name": "Thomas",  
            "City": "Leeds",  
            "Country": "United Kingdom"  
    }]  
}  
var dept2 = {        
    "data": [  
            {  
            "Name": "Ethan",  
            "City": "Cardiff",  
            "Country": "United Kingdom"  
    },               
            {  
            "Name": "David",  
            "City": "Southampton",  
            "Country": "United Kingdom"  
    },                
            {  
            "Name": "Suzan",  
            "City": "Norwich",  
            "Country": "United Kingdom"  
    }  
]  
}  

JS (Functions)
var app = angular.module('myApp', []);  
 
app.controller('employees', function($scope, $http) {  
    $scope.names = dept1.data;  
    $scope.next = function() {  
        $scope.names = dept2.data;  
    }  
     $scope.prev = function() {  
        $scope.names = dept1.data;  
    }  
});

HTML
<div ng-app="myApp" ng-controller="employees">    
    <input type="button" value="Development" ng-click="prev();">    
          <input type="button" value="Testing" ng-click="next();">    
    <table>    
        <tr ng-repeat="x in names">    
            <td>{{ x.Name }}</td>    
            <td>{{ x.Country }}</td>    
        </tr>    
    </table>    
</div>               

CSS
table {    
    border-collapse: collapse;    
    width: 100%;    
}    
th, td {    
    padding: 0.25rem;    
    text-align: left;    
    border: 1px solid #ccc;    
}    
tbody tr:hover {    
    background: yellow;    
}    

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When we wish to develop a web-based application using AngularJs, it usually needs a dropdown control with some extra features like search text and then on. however like classic ASP.NET, always a ready-made control isn't available in the AngularJs Framework. but really, if we would like to create a custom dropdown control, we are able to produce it easily. using this article, we'll find out how to create a custom dropdown control.

For that, we are going to first open Visual Studio and make a blank ASP.NET web application. we then have to be compelled to install some Nuget packages like AngularJs, Bootstrap and Angular UI.

Now produce a html file named DropDown.html. it's the template file for the dropdown directive. in this file, add the following code:
<div class="btn-group" dropdown is-open="status.isopen" style="width:{{DropDownParam.Width}};"> 
<div style="float:left;width:100%;"> 
<input type="text" class="form-control" style="width:90%;" ng-disabled="DropDownParam.Disabled" 
id="{{TextControlID}}" placeholder="{{DropDownParam.placeholder}}" value="{{SelectText}}"  
ng-model="SelectText" ng-change="toggleDropdown();" ng-model-options="{debounce:1000}"> 
<button type="button" class="btn btn-primary dropdown-toggle" dropdown-toggle ng-disabled="DropDownParam.Disabled" 
id="{{ButtonControlID}}" ng-click="fnShowDropDown();"> 
<span class="caret"></span> 
</button> 
</div> 
<ul class="dropdown-menu" role="menu" style="height:{{DropDownParam.height}};overflow:auto;overflow-x:hidden;width:95%;"> 
<li ng-repeat="item in DropDownParam.source | filter: {Text : SelectText}" data-ng-click="selectItem(item)"> 
<a><span tabindex="-1" style="cursor:pointer;" data-ng-click="selectItem(item)">{{item.Text}}</span></a> 
</li> 
</ul> 
</div>  

Now add another file named "DemoDropDown.html" that shows the functionality of the dropdown control. in that file, we will use the reference of Angular.min.js file and bootstrap.js file. Also, we will use the reference of the bootstrap.css file. Write the following code in this HTML file:
<!DOCTYPE html> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<title>Drop Down Demo</title> 
<script src="../RefScript/angular.min.js"></script> 
<script src="../RefScript/ui-bootstrap.min.js"></script> 
<script src="../PageScript/CustomCtrlApp.js"></script> 
<script src="../DirectiveScript/DropDown.js"></script> 
<script src="../PageScript/DropDownDemo.js"></script> 

<link href="../RefStyle/bootstrap.min.css" rel="stylesheet" /> 
</head> 
<body ng-app="CustomCtrlApp"> 
<div ng-controller="DropDownDemo"> 
<h2>{{Heading1}}</h2> 
<div> 
<table style="width:100%;column-span:all;" cellpadding="5" cellspacing="10" > 
<tr> 
<td style="width:40%;">Basic Drop Down </td> 
<td style="width:60%;"><ng-drop-down dropdown-setting="ComboSetting" callbackfunction="fnChange"></ng-drop-down></td> 
</tr> 
<tr> 
<td colspan="2"> 
<span>Select Item : {{SelectText}}</span> 
</td> 
</tr> 
<tr> 
<td colspan="2"> 
<input type="button" value="Get Text" ng-click="fnGetText();" /> 
<input type="button" value="Get Text" ng-click="fnGetValue();" /> 
<input type="button" value="Clear Selection" ng-click="fnClearItem();" /> 
<input type="button" value="Clear Combo" ng-click="fnClear();" /> 
<input type="button" value="Enable Combo" ng-click="fnEnable(true);" /> 
<input type="button" value="Disable Combo" ng-click="fnEnable(false);" /> 
</td> 
</tr> 
<tr> 
<td><input type="text" ng-model="SetValue" /></td> 
<td> 
<input type="button" value="Set Item by Value" ng-click="fnSetItem();" /> 
<input type="button" value="Set Item by Index" ng-click="fnSetIndex();" /> 
</td> 
</tr> 
</table> 
</div>        
</div> 
</body> 
</html>  

Now it's time to add our own JavaScript file. First, we need to create an Angular App file named "CustomCtrlApp.Js" and add the following code:
var CustomCtrlApp = angular.module('CustomCtrlApp', ['ui.bootstrap']);  

Next step, we will add another JavaScript file named "DropDown.js" that is the controller file of the dropdown directive to define the attribute, events and methods of the dropdown control. Then, write the following code:
CustomCtrlApp.directive("ngDropDown", [function () { 
this; 
return { 
restrict: "EA", 
scope: { 
DropDownSetup: '=dropdownSetting', 
callbackfunction: '=' 
}, 
templateUrl: '../HTMLTemplate/DropDown.html', 
controller: function ($scope, $element, $attrs) { 
$scope.DropDownParam = $scope.DropDownSetup.attribute; 
$scope.TextControlID = "txt" + $scope.DropDownSetup.attribute.id; 
$scope.ButtonControlID = "btn" + $scope.DropDownSetup.attribute.id; 
$scope.showDropDown = false; 
$scope.SelectText = ''; 

if ($scope.DropDownParam.Width != #ff0000) { 
var width = $scope.DropDownParam.Width.substr(0, $scope.DropDownParam.Width.length - 1); 
$scope.BoxWidth = Math.round(width * 0.95, 0) + '%'; 
} 
else { 
$scope.BoxWidth = '95%'; 
} 

if ($scope.DropDownParam.Enabled != undefined) { 
$scope.DropDownParam.Disabled = !$scope.DropDownParam.Enabled; 
} 
else { 
$scope.DropDownParam.Disabled = false; 
} 

if ($scope.DropDownSetup.events == undefined) { 
$scop.DropDownSetup.events = {}; 
} 

$scope.fnShowDropDown = function () { 
if ($scope.DropDownParam.source.length > 0) { 
$scope.showDropDown = !$scope.showDropDown; 
} 
else { 
$scope.showDropDown = false; 
} 
} 

$scope.selectItem = function (item) { 
$scope.SelectText = item.Text; 
$scope.DropDownSetup.attribute.Text = item.Text; 
$scope.DropDownSetup.attribute.Value = item.Value; 
$scope.showDropDown = false;                 
$scope.DropDownSetup.events.selectedIndexChange(item); 
} 

function assignDropDownMethod() { 
$scope.DropDownSetup.method = { 
clearSelection: function () { 
    $scope.SelectText = ''; 
}, 
clear: function () { 
    $scope.DropDownParam.source = ''; 
    $scope.SelectText = ''; 
}, 
selectItemByValue: function (value) { 
    var result_obj = objectFindByKey($scope.DropDownParam.source, 'Value', value); 
    if (result_obj != null) { 
        $scope.selectItem(result_obj); 
    } 
}, 
selectItemByIndex: function (index) { 
    var result_obj = $scope.DropDownParam.source[index]; 
    if (result_obj != null) { 
        $scope.selectItem(result_obj); 
    } 
}, 
setEnable: function (param) { 
    $scope.DropDownParam.Disabled = !param; 
} 
} 
} 

assignDropDownMethod(); 

function objectFindByKey(array, key, value) { 
for (var i = 0; i < array.length; i++) { 
if (array[i][key] === value) { 
    return array[i]; 
} 
} 
return null; 
} 

$scope.fnHideDropDown = function () { 
$scope.showDropDown = false; 
} 

$scope.status = { 
isopen: false 
}; 

$scope.toggleDropdown = function () { 
if ($scope.DropDownParam.source.length > 0) { 
$scope.showDropDown = !$scope.showDropDown; 
$scope.status.isopen = !$scope.status.isopen; 
} 
else { 
$scope.showDropDown = false; 
$scope.status.isopen = false; 
} 

}; 
} 
} 
}]);  

Run the project and check the output here.

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