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BackboneJS-View setElement
Description
If you'd like to apply a Backbone view to a different DOM element, use setElement, which will also create the cached $el reference and move the view's delegated events from the old element to the new one.
Syntax
view.setElement(element) |
Parameters:
- element: It is the element which can be changed from existing element to different element.
Example
<!DOCTYPE html> <head> <title>View Example</title> <script src="https://code.jquery.com/jquery-2.1.3.min.js" type="text/javascript"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.2/underscore-min.js" type="text/javascript"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.1.2/backbone-min.js" type="text/javascript"></script> </head> <body> <div id="myview"> Enter your text: <input type="text"/> </div> <div id="myapp"></div> <script type="text/javascript"> //'ViewDemo' is a name of the view class var ViewDemo = Backbone.View.extend({ //Event triggers 'sayHi' function when you enter the text in input tag events: { 'change input': 'sayHi' }, //This function is called when the view is instantiated initialize: function() { this.setElement($('#myview')); //'setElement' changes the element associated with the view }, //when you enter the text, it displays the below line on the screen sayHi: function() { document.write('Welcome to Tutorialspoint!!!'); } }); //'viewdemo' is a instance of the 'ViewDemo' class var viewdemo = new ViewDemo; </script> </body> </html>
Output
Let's carry out the following steps to see how above code works:
Save above code in setElement.htm file
Open this HTML file in a browser.
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