HTML5: How to specify that an input element should be pre-selected when the page loads?

Last update on February 09 2024 12:52:51 (UTC/GMT +8 hours)

Solution :

HTML Code:

<!DOCTYPE html><!-- Declaration specifying the document type -->
<html><!-- Opening tag for the root element of the HTML document -->
<head><!-- Opening tag for the document's header section -->
<meta charset="utf-8"><!-- Metadata tag specifying the character encoding of the document -->
<title> How to specify that an input element should be pre-selected when the page loads</title><!-- Title of the HTML document -->
</head><!-- Closing tag for the document's header section -->
<body><!-- Opening tag for the document's body section -->
<form method="POST" action="https://www.w3resource.com/html-css-exercise/basic/solution/input-checked-answer-demo.php"><!-- Form element defining a form with method and action attributes -->
<!-- Form inputs -->
<input type="checkbox" name="device[]" value="Laptop"> I have a Laptop<br><!-- Checkbox input for selecting whether the user has a laptop -->
<input type="checkbox" name="device[]" value="Printer" checked> I have a Printer<br><!-- Checkbox input for selecting whether the user has a printer, with the checked attribute to pre-select it when the page loads -->
<input type="submit" value="Submit"><!-- Submit button to submit the form data -->
</form>
</body><!-- Closing tag for the document's body section -->
</html><!-- Closing tag for the root element of the HTML document -->

Explanation:

This HTML code demonstrates how to create a form with checkbox inputs, one of which is pre-selected when the page loads.
The form is configured with the method attribute set to "POST" and the action attribute set to the URL where the form data will be submitted.
Within the form, there are two checkbox inputs for selecting whether the user has a laptop or a printer.
The checkbox input for the printer has the checked attribute, which pre-selects it when the page loads.

Live Demo:

See the Pen input-checked-answer by w3resource (@w3resource) on CodePen.

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