Backbone.JS Has()

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The Backbone.JS Has() model is used to get a true value, if the attribute value is defined with a non-null value or non-undefined value.

Syntax: 

Model.has(attribute)

Parameters:
attribute: This parameter is used to define properties of a model.

Example: 

 

  
Example

Output: 

We have one more message: True

Explanation:
In this example the Backbone.JS has() model is giving a true value if MSG2 is present in Y.