9951 explained code solutions for 126 technologies

backbone.jsHow can I find an example of Backbone.js code on GitHub?

To find an example of Backbone.js code on GitHub, you can use the GitHub search function.

For example, you can enter the following query into the search bar: language:javascript backbone. This will return a list of JavaScript files that use Backbone.js.

Here is an example code block that uses Backbone.js:

var User = Backbone.Model.extend({
  defaults: {
    name: 'Guest User',
    age: 23
  validate: function(attrs){
    if (attrs.age < 0) {
      return 'Age must be positive.';

var user = new User({name: 'John', age: -1});
user.on("invalid", function(model, error){

The output of the example code is:

Age must be positive.

The code consists of the following parts:

  • var User = Backbone.Model.extend({...}) - this creates a new model class called User.
  • defaults - this sets default values for the model's attributes.
  • validate - this sets up a validation function that will be called when the model is saved.
  • var user = new User({name: 'John', age: -1}); - this creates a new instance of the User model with the specified attributes.
  • user.on("invalid", function(model, error){...}) - this sets up a listener that will be called if the model fails validation.
  • user.save() - this saves the model and triggers the validation function.

Here are some ## Helpful links

Edit this code on GitHub