Example of focus event usage in jQuery_jquery

The example in this article describes the usage of focus event in jQuery. Share it with everyone for your reference. The specific analysis is as follows:

The focus event is triggered when an element gains focus or the focus() method is called.

A complete event process must not only have conditions that can trigger the event, but also an event handler.
You can bind an event handler to the focus event through the focus() method. For example:

Copy code The code is as follows:

$("input").focus(function(){$(this). css("backgroundColor","red")})

The above code is to bind the function function as an event handler to the focus event through the focus() method. This function will be called when the focus event is triggered.
Example code:

Copy code The code is as follows:

• Username:


• Password:

The above code can register the focus event handler for the input element, and set the background color of the text box when it gets focus.

I hope this article will be helpful to everyone’s jQuery programming.