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BackboneJS - Event Trigger
Description
It invokes the callback functions for the given events.
Syntax
object.trigger(event,[args])
Parameters
event − It binds an object.
args − It passes the values/arguments to the callback function.
Example
<!DOCTYPE html> <html> <head> <title>Event Trigger 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"> //Created an object 'myVal' and extended it using Backbone.Events method var myVal = _.extend({title:'TutorialsPoint!!!', site:'www.tutorialspoint.com'}, Backbone.Events); //The on() method will bind the callback function to an object myVal.on('myFunc', function () { document.write("The triggered value for site is: "); document.write(this.site); //value of site will get displayed by referring the current object }); // The trigger() method triggers the 'myFunc' event on 'myVal' myVal.trigger('myFunc'); </script> </body> </html>
Output
Let us carry out the following steps to see how the above code works −
Save the above code in the trigger.htm file
Open this HTML file in a browser.
backbonejs_events.htm
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