HTML required Attribute Last Updated : 29 Aug, 2024 Summarize Comments Improve Suggest changes Share Like Article Like Report 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: <input><select><textarea>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: Google ChromeEdge FirefoxOperaSafari Comment More infoAdvertise with us M manaschhabra2 Follow Improve Article Tags : Technical Scripter Web Technologies HTML Technical Scripter 2018 HTML-Attributes +1 More Similar Reads HTML accept Attribute HTML accept Attribute specifies the type of file that the server accepts. This attribute can be used with <input> element only. 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