An HTML form is used to collect user input. The user input is most often sent to a server for processing.

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HTML tutorial: HTML Forms and Input. HTML DOM reference: Form Object. CSS Tutorial: Styling Forms

The action attribute defines the action to be performed when the form is submitted. Usually, the form data is sent to a file on the server when the user clicks on the submit button. In the example below, the form data is sent to a file called "action_page.php". This file contains a server-side script that handles the form data:

An HTML form is used to collect user input. The user input is most often sent to a server for processing.

PHP - A Simple HTML Form. The example below displays a simple HTML form with two input fields and a submit button:

A form is a section of an HTML document where you put input controls (text boxes, check boxes, radio buttons, and pull-down lists).

JavaScript Form Validation. HTML form validation can be done by JavaScript. If a form field (fname) is empty, this function alerts a message, and returns false, to prevent the form from being submitted:

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