Tryit<!DOCTYPE html><html><body><select><optgroup label="WEB DEVELOPMENT IN WIKITECHY"><option value="css">CSS</option><option value="html">HTML</option></optgroup><optgroup label="PROGRAMMING TECHNOLOGY IN WIKITECHY"><option value="java">JAVA</option><option value="c">C</option></optgroup></select></body></html>
Code Explanation for <optgroup> tag:
<optgroup> tag is used to group the related contents in a drop-down list.
label is an attribute, which tends to describe the title/caption for an option-group.
Output for <optgroup> tag:
By clicking the dropdown list the option values is displayed in the option group.
CSS, HTML, JAVA & C are the Option Values.
WEB DEVELOPEMENT IN WIKITECHY & PROGRAMMING TECHNOLOGY IN WIKITECHY are the Option groups.