jQuery Event Triggers
We previously covered adding event handlers to our pages and will now look at how to trigger an event on specific elements.
In a situation where you have multiple handlers, and find that you want to trigger one or more already setup handlers based a user’s interaction. jQuery API offers an elegant solution. Rather than duplicating the code, we simply trigger those event.
jQuery has a .trigger(…) event that allows us to do that. We simply trigger the event as as if the user did it through the user interface.
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In jQuery, you can easily and quickly add event handlers to add behaviour to your code:
Let say you wanted to trigger the click event:
jQuery reference: Execute handler and behavior attached to an event
You will find this function very useful when you come across situations where you want to trigger a change in another dropdown or click on a link.
The .trigger(…) function cannot be used to mimic native browser events, such as clicking on a file input box or an anchor tag. This is because, there is no event handler attached using jQuery’s event system that corresponds to these events. It is a browser restriction and mainly for security reasons.
jQuery .trigger(…) method allows you to build sophisticated rich applications that can respond to users’ actions in a very fine-tuned manner. It provides a pipeline to programmatically trigger events and serves as a vehilce for creating loosely coupled services and components.
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