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jQuery :first Selector
The :first selector in jQuery is used to select the first DOM element.
Syntax
The syntax is as follows −
$(":first")Example
Let us now see an example to implement the :first() selector −
<!DOCTYPE html>
<html>
<head>
<style>
.demo {
background-color: red;
color: white;
font-size: 16px;
border: 2px blue dashed;
}
</style>
<script src="https://code.jquery.com/jquery-3.4.1.js"></script>
<script>
$(document).ready(function(){
$("input:first").addClass("demo");
});
</script>
</head>
<body>
<h2>Job Application</h2>
<form action="">
Applicant Name: <input type="text" name="cname"><br>
Rank: <input type="number" name="rank"><br><br>
Resume: <input type="file" name="myfile">
</form>
</body>
</html>Output
This will produce the following output −
Updated on: 05-Nov-2019
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