Last Updated : 11 Jul, 2025
It is a Boolean attribute that is used to specify that the input element must be filled out before submitting the Form.
Elements: These attributes can be associated with three elements which are listed below:
Syntax:
<input required>
Example-1: In this example, we demonstrate the use of the required attribute in a form. The attribute ensures that the "Username" field must be filled out before submitting the form.
html
<!DOCTYPE html>
<html>
<head>
<title>required Attribute</title>
<style>
h1, h2 {
color:green;
font-style:italic;
}
body {
text-align:center;
}
</style>
</head>
<body>
<h1>GeeksForGeeks</h1>
<h2>required attribute in input Field</h2>
<form action="">
Username:
<input type="text"
name="username"
required>
<br>
Password:
<input type="password"
name="password">
<br>
<input type="submit">
</form>
</body>
</html>
Output:
Syntax:
<select required>
Example-2: In this example we demonstrates the required attribute in a <select> field. It ensures users select an option other than "None" before submitting the form, styled with green italic headings.
html
<!DOCTYPE html>
<html>
<head>
<title>required Attribute</title>
<style>
h1, h2 {
color:green;
font-style:italic;
}
body {
text-align:center;
}
</style>
</head>
<body>
<h1>GeeksForGeeks</h1>
<h2>required attribute in select Field</h2>
<form action="">
<select required>
<option value="">
None
</option>
<option value="ds">
Data Structure
</option>
<option value="algo">
Algorithm
</option>
<option value="os">
Operating System
</option>
<option value="cn">
Computer Network
</option>
</select>
<input type="submit">
</form>
</body>
</html>
Output:
Syntax:
<textarea required>
Example-3: In this example we demonstrates the required attribute in a <textarea> field, ensuring users provide input before form submission. The page includes green, italic headings and a centered layout.
html
<!DOCTYPE html>
<html>
<head>
<title>required Attribute</title>
<style>
h1, h2 {
color:green;
font-style:italic;
}
body {
text-align:center;
}
</style>
</head>
<body>
<h1>GeeksForGeeks</h1>
<h2>required attribute in Textarea Field</h2>
<form action="">
<textarea rows="7"
cols="50"
name="comment"
required>
</textarea>
<input type="submit">
</form>
</body>
</html>
Output:
Supported Browsers: The browser supported by required attribute are listed below:
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
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HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4