function ValidateListBoxItems() { var selList = document.getElementById('lstRoles') ; for(var len=0; len < selList.options.length; len++ ) { if( ( selList.options[len].selected == true ) ) { return true; } } alert('Select atleast one Role.'); document.getElementById('lstRoles').focus(); return false; } |
4/10/2013
Asp.Net List box control validation using Javascript
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