id


The attribute id represents the id of the control, we will use id to identify the control, even in JavaScript we will find the control by its id.

Syntax:

<input type="text" id="textboxid" />

Example:

<html> <head> <title>HTML Tutorial</title> <script language="javascript"> function ShowInput() { var input = document.getElementById("txtinput"); if (input != null) alert(input.value); } </script> </head> <body> Enter input : <nput type="text" id="txtinput" /> <input type="button" id="btnShow" onclick="ShowInput();" value="Show entered input" /> </body> </html>

Output:

HTML Tutorial Enter input :