Sunday, February 12, 2017

AngularJS - HTML DOM

Following directives can be used to bind application data to attributes of HTML DOM Elements.
Sr.No. Name Description
1 ng-disabled disables a given control.
2 ng-show shows a given control.
3 ng-hide hides a given control.
4 ng-click represents a AngularJS click event.

ng-disabled directive

Add ng-disabled attribute to a HTML button and pass it a model. Bind the model to an checkbox and see the variation.
<input type = "checkbox" ng-model = "enableDisableButton">Disable Button
<button ng-disabled = "enableDisableButton">Click Me!</button>

ng-show directive

Add ng-show attribute to a HTML button and pass it a model. Bind the model to an checkbox and see the variation.
<input type = "checkbox" ng-model = "showHide1">Show Button
<button ng-show = "showHide1">Click Me!</button>

ng-hide directive

Add ng-hide attribute to a HTML button and pass it a model. Bind the model to an checkbox and see the variation.
<input type = "checkbox" ng-model = "showHide2">Hide Button
<button ng-hide = "showHide2">Click Me!</button>

ng-click directive

Add ng-click attribute to a HTML button and update a model. Bind the model to html and see the variation.
<p>Total click: {{ clickCounter }}</p>
<button ng-click = "clickCounter = clickCounter + 1">Click Me!</button>

Example

Following example will showcase all the above mentioned directives.
testAngularJS.htm
<html>
   
   <head>
      <title>AngularJS HTML DOM</title>
   </head>
   
   <body>
      <h2>AngularJS Sample Application</h2>
      <div ng-app = "">
         
         <table border = "0">
            <tr>
               <td><input type = "checkbox" ng-model = "enableDisableButton">Disable Button</td>
               <td><button ng-disabled = "enableDisableButton">Click Me!</button></td>
            </tr>
            
            <tr>
               <td><input type = "checkbox" ng-model = "showHide1">Show Button</td>
               <td><button ng-show = "showHide1">Click Me!</button></td>
            </tr>
            
            <tr>
               <td><input type = "checkbox" ng-model = "showHide2">Hide Button</td>
               <td><button ng-hide = "showHide2">Click Me!</button></td>
            </tr>
            
            <tr>
               <td><p>Total click: {{ clickCounter }}</p></td>
               <td><button ng-click = "clickCounter = clickCounter + 1">Click Me!</button></td>
            </tr>
         </table>
         
      </div>
      
      <script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
      
   </body>
</html>

Output

Open textAngularJS.htm in a web browser. See the result.

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