How to Check If an Input Field is Empty Using jQuery
Topic: JavaScript / jQueryPrev|Next
Answer: Use the jQuery val() Method
You can use the val() method to test or check if inputs are empty in jQuery.
The following example will add a red outline around the inputs if it is focused but not filled out.
Example
Try this code »<!DOCTYPE html>
<html lang="en">
<head>
<title>Check If Inputs are Empty using jQuery</title>
<style>
.error{
outline: 1px solid red;
}
</style>
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<script>
$(document).ready(function(){
$('#myForm input[type="text"]').blur(function(){
if(!$(this).val()){
$(this).addClass("error");
} else{
$(this).removeClass("error");
}
});
});
</script>
</head>
<body>
<form id="myForm">
<p><label>First Name: <input type="text"></label></p>
<p><label>Last Name: <input type="text"></label></p>
<p><label>Email Address: <input type="text"></label></p>
</form>
</body>
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