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MULTIPLE SELECT BOX EXAMPLE USING JAVASCRIPT AND HTML
[Javascript editor]
Run
Share Link
Clear
HTML [Ctrl+Enter] - to run
Username:
Siva
Raja
Roja
Lakshanya
Vidhyaa
Validate
CSS [Ctrl+Enter] - to run
Javascript [Ctrl+Enter] - to run
function validate(){ var n = document.getElementById("slt_usernames").options.length; for (var i = 0;i < n; i++){ if (document.getElementById("slt_usernames").options[i].selected === true) alert(document.getElementById("slt_usernames").options[i].value+" is selected."); else alert(document.getElementById("slt_usernames").options[i].value+" is not selected."); } }
OUTPUT
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Copyright © 2021 Knowledge walls, All rights reserved