Check box validation in javascript
Check box validation : In java script for selectAll check box and deselect all check box. there are two functions for selectAll check box and deselect all check box in java script. <HTML> <HEAD> <script> function selectAllCheckBox(){ var len = document.testForm.chkb.length; //alert(len); for(var i=0; i<len; i++){ //alert(document.testForm.chkb[i].checked); document.testForm.chkb[i].checked=true; } } function deselectAllCheckBox(){ var len = document.testForm.chkb.length; //alert(len); for(var i=0; i<len; i++){ //alert(document.testForm.chkb[i].checked); document.testForm.chkb[i].checked=false; } } </script> </HEAD> <BODY> <form name="testForm"> <INPUT TYPE="checkbox" NAME="chkb"><br/> <INPUT TYPE="checkbox" NAME=&q