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The focus is a Jquery Event Method is used to focus on an element. The element get focused by mouse click or by "tab-navigating" to it. The focus method is often used in combination with the blur() method.
Syntax:
$(selector).focus() -Trigger the focus event for selected elements.
$(selector).focus(function) -Attach a function to the focus event.
Parameter: It accepts an optional parameter “function” which specifies the function to run when the focus event occurs.
Example:
<html>
<head>
<style>
span {
display: none;
}
body {
width: 35%;
height: 50px;
border: 2px solid green;
padding: 35px;
margin: 10px;
}
</style>
<script src="https://code.jquery.com/jquery-1.10.2.js">
</script>
</head>
<body>
<!-- this paragraph element get focused -->
<p>
<input type="text"> <span>focused</span></p>
<!-- jQuery code to show working of this method -->
<script>
$("input").focus(function() {
$(this).next("span").css("display", "inline");
});
</script>
</body>
</html>
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