Backbone.js $ Utility

Backbone.js $ Utility is useful when we have multiple jQuery. It is used to specify the particular object as its DOM or AJAX library.

Syntax:

Backbone.$ = $

Properties: This utility cannot takes any parameters.

Example 1: In this example, we will illustrate the Backbone.js $ Utility. Here we will define the utility function default ajax library.

HTML

<!DOCTYPE html>
<html>
  
<head>
    <title>BackboneJS $ Utility</title>
    <script src="https://code.jquery.com/jquery-1.12.4.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>
    <h1 style="color: green;">
        GeeksforGeeks
    </h1>
    <h3>BackboneJS $ Utility</h3>
    <script type="text/javascript">
                Backbone.$ = $;
                console.log(Backbone);
    </script>
</body>
  
</html>

Output:

Example 2: In this example, we will use an object as an AJAX library property.

HTML

<!DOCTYPE html>
<html>
  
<head>
    <title>BackboneJS $ Utility</title>
    <script src=
 "https://code.jquery.com/jquery-1.12.4.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>
    <h1 style="color: green;">
        GeeksforGeeks
    </h1>

    <h3>BackboneJS $ Utility</h3>

    <script type="text/javascript">
        Backbone.$ = {
            VERSION : '1.1.0',
            emulateHTTP : true , 
              emulateJSON : true
        };
        console.log(Backbone.$);        
    </script>
</body>
  
</html>

Output:

Reference: https://backbonejs.org/#Utility-Backbone-$

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