How to use JQuery Event focus() Method

This article describe about jQuery Event focus() Method.
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jQuery Event focus() Method

When element gets focus this event occur. Means when you select element by a mouse click or by using "tab_navigation" this event occur.

The focus() trigger the focus event.

Example

<!DOCTYPE html>

<html>

<head>

<script type="text/javascript" src="jquery.js"></script>

<script type="text/javascript">

    $(document).ready(function () {

        $("input").focus(function () {

            $("input").css("background-color", "gray");

        });

        $("input").blur(function () {

            $("input").css("background-color", "yellow");

        });

    });

</script>

</head>

<body>

Enter name: <input type="text" />

<p>If you Click in the input field to get focus, and outside the input field to lose focus</p>

</body>

</html>

 

Output

 

focus method pic31.jpg

 

Note: After click in the input field field get focus and background also change.

 

Trigger the focus Event

It is occur for the selected element.

 

Example

 

<head>

<script type="text/javascript" src="jquery.js"></script>

<script type="text/javascript">

    $(document).ready(function () {

        $("input").focus(function () {

            $("input").css("background-color", "Gray");

        });

        $("input").blur(function () {

            $("input").css("background-color", "yellow");

        });

        $("#btn1").click(function () {

            $("input").focus();

        });

        $("#btn2").click(function () {

            $("input").blur();

        });

    });

</script>

</head>

<body>

Enter your name: <input type="text" />

<p><button id="btn1">Trigger focus event of input field</button></p>

<p><button id="btn2">Trigger blur event of input field</button></p>

</body>

</html>

 

Output

 

focus method event pic32.jpg

 

Note: This is the output of after click trigger focus event button

 

Bind function to the focus event

 

When focus event occur to the selected element this function to run.

 

Syntax

 

$(selector).focus(function)

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