How to dynamically insert elements into the HTML page using Angular

Question

How to dynamically insert elements into the HTML page using Angular

When my page first loads, it looks like this

<body>
 <div class="col-md-12" id="dataPanes">
   <div class="row dataPane"> Chunk of html elements </div>
 </div>

 <div class"col-md-12 text-right">
   <input type="button" class="btn btn-primary" value="Add dynamic row" ng-click="addElementChunk()" />
</body>

I want to add rows to div#dataPanes when the button is clicked
If I were using jQuery, the addElementChunk() function would look like this:

var addElementChunk = function()
{
   var html = "<div class='row dataPane'> Chunk of html elements </div>";
   $("#dataPanes").append(html);
}

How can I achieve the same functionality with Angular?

javascript jquery html css angularjs

Answer 1

Answer №1

To achieve this, you must utilize the $compile method.

By utilizing the `$compile` method in AngularJS, you can compile an HTML string or DOM into a template and generate a template function that links the scope with the template.

Also, don't forget about $sce.

`$sce` stands for Strict Contextual Escaping, which is a security feature in AngularJS that restricts bindings to render only trusted values. Its main purpose is to help developers write secure code by default and simplifies the process of auditing for security vulnerabilities like XSS and clickjacking.

addElementChunk = function(){ 
    var html = '<div class="row dataPane"> Chunk of html elements </div>';
    var trustedHtml = $sce.trustAsHtml(html);
    var compiledHtml = $compile(trustedHtml)($scope);
    angular.element(document.getElementById('dataPanes')).append(compiledHtml);
}

Answer 2

To achieve this, you must utilize the $compile method.

By utilizing the `$compile` method in AngularJS, you can compile an HTML string or DOM into a template and generate a template function that links the scope with the template.

Also, don't forget about $sce.

`$sce` stands for Strict Contextual Escaping, which is a security feature in AngularJS that restricts bindings to render only trusted values. Its main purpose is to help developers write secure code by default and simplifies the process of auditing for security vulnerabilities like XSS and clickjacking.

addElementChunk = function(){ 
    var html = '<div class="row dataPane"> Chunk of html elements </div>';
    var trustedHtml = $sce.trustAsHtml(html);
    var compiledHtml = $compile(trustedHtml)($scope);
    angular.element(document.getElementById('dataPanes')).append(compiledHtml);
}

Answer 3

Answer №2

By using the angular ng-repeat directive, you have the ability to dynamically append new div elements to your HTML.

Imagine you have an array with one element, and each time you click a button, a new element is added to the array and displayed in the "dataPane" div through repetition.

This is how your code could look:

HTML

<div ng-app="myApp" ng-controller="myCtr">
    <div class="col-md-12" id="dataPanes">
        <div class="row dataPane" ng-repeat="element in added_elements"> Chunk of html elements ( {{element}} ) </div>
    </div>

    <div class="col-md-12 text-right">
        <input type="button" class="btn btn-primary" value="Add dynamic row" ng-click="addMoreElements()" />
    </div>
</div>

JS

angular
.module('myApp', [])
.controller('myCtr', ['$scope', function($scope) {
    $scope.added_elements = ["elem 1"];
    $scope.addMoreElements = function(){
        $scope.added_elements.push("elem "+ ($scope.added_elements.length+1));
    } 
}])

This method allows you to easily add and bind data for your repeated rows in HTML without duplicating the entire HTML code.

See Demo in Action

Answer 4

By using the angular ng-repeat directive, you have the ability to dynamically append new div elements to your HTML.

Imagine you have an array with one element, and each time you click a button, a new element is added to the array and displayed in the "dataPane" div through repetition.

This is how your code could look:

HTML

<div ng-app="myApp" ng-controller="myCtr">
    <div class="col-md-12" id="dataPanes">
        <div class="row dataPane" ng-repeat="element in added_elements"> Chunk of html elements ( {{element}} ) </div>
    </div>

    <div class="col-md-12 text-right">
        <input type="button" class="btn btn-primary" value="Add dynamic row" ng-click="addMoreElements()" />
    </div>
</div>

JS

angular
.module('myApp', [])
.controller('myCtr', ['$scope', function($scope) {
    $scope.added_elements = ["elem 1"];
    $scope.addMoreElements = function(){
        $scope.added_elements.push("elem "+ ($scope.added_elements.length+1));
    } 
}])

This method allows you to easily add and bind data for your repeated rows in HTML without duplicating the entire HTML code.

See Demo in Action

Answer 5

Answer №3

If you want to add a new HTML element, you can easily do so using this method. It's simple to write and easy to understand. I hope this explanation will be helpful for you. The angular.element is used to access the HTML element. Here is an example of the HTML code:

 angular.module('myApp',[]).controller('myCtrl', function($scope){
 
 $scope.addElementChunk = function()
    {
       var htmlStr = '<div class="row dataPane"> Chunk of html elements </div>';
     debugger;
    angular.element(document.getElementById('dataPanes')).append(htmlStr);
    }
          
 });

 <script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/angular.js/1.0.3/angular.min.js"></script>
<div ng-app="myApp" ng-controller="myCtrl">

 <div class="col-md-12" id="dataPanes">
   <div class="row dataPane"> Chunk of html elements </div>
 </div>

 <div class="col-md-12 text-right">
   <input type="button" class="btn btn-primary" value="Add dynamic row" ng-click="addElementChunk()" />
</div>
</div>

You can also view the demo on JSFiddle by following this link

Answer 6

If you want to add a new HTML element, you can easily do so using this method. It's simple to write and easy to understand. I hope this explanation will be helpful for you. The angular.element is used to access the HTML element. Here is an example of the HTML code:

 angular.module('myApp',[]).controller('myCtrl', function($scope){
 
 $scope.addElementChunk = function()
    {
       var htmlStr = '<div class="row dataPane"> Chunk of html elements </div>';
     debugger;
    angular.element(document.getElementById('dataPanes')).append(htmlStr);
    }
          
 });

 <script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/angular.js/1.0.3/angular.min.js"></script>
<div ng-app="myApp" ng-controller="myCtrl">

 <div class="col-md-12" id="dataPanes">
   <div class="row dataPane"> Chunk of html elements </div>
 </div>

 <div class="col-md-12 text-right">
   <input type="button" class="btn btn-primary" value="Add dynamic row" ng-click="addElementChunk()" />
</div>
</div>

You can also view the demo on JSFiddle by following this link

How to dynamically insert elements into the HTML page using Angular

Answer №1

Answer №2

Answer №3

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