BackboneJS-Model validationError

Quiz

Description

It is the returned value by validate() method which displays validation error, if validation fails or after the invalid event is triggered.

Syntax

model.validationError

Example

<!DOCTYPE html>
   <head>
      <title>Model 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>
   <script type="text/javascript">
      var Person = Backbone.Model.extend({
         defaults: {
            name: 'john',
            age: 25,
            occupation: 'working'
         },
         initialize : function(){
            this.on("invalid",function(model,error){
            document.write(error);
         });
         },
         validate: function(attributes) {
            if ( attributes.age 

Output
Let's carry out the following steps to see how above code works:

Save above code in validationError.htm file
Open this HTML file in a browser.

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