BackboneJS-Model isValid

Quiz

Description

It checks the model state by using validate() method and also checks validations for each attributes.

Syntax

model.isValid()

Example

<!DOCTYPE html>
   <head>
      <title> Model Example</title>
         <script src="/?originalUrl=https%3A%2F%2Fcode.jquery.com%2Fjquery-2.1.3.min.js" type="text/javascript"></script>
         <script src="/?originalUrl=https%3A%2F%2Fcdnjs.cloudflare.com%2Fajax%2Flibs%2Funderscore.js%2F1.8.2%2Funderscore-min.js" type="text/javascript"></script>
         <script src="/?originalUrl=https%3A%2F%2Fcdnjs.cloudflare.com%2Fajax%2Flibs%2Fbackbone.js%2F1.1.2%2Fbackbone-min.js" type="text/javascript"></script>
         <script type="text/javascript">
            var Person = Backbone.Model.extend({
               defaults: {
                  name: '',
                  age: 25,
               },
            validate: function(attributes) {
               if (attributes.name == '') {
               document.write("please enter the name!!!!");
               }
            }
            });
            var person = new Person({
               name: 'John'
            });
            document.write("The passed value for attribute 'name' is: ", person.isValid());

         </script>
   </head>
   <body></body>
</html>

Output

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

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

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