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Check all and uncheck all

/ Published in: JavaScript
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  1. function checkAll(fmobj, checkAllId) {
  2.   for (var i=0;i<fmobj.elements.length;i++) {
  3.     var e = fmobj.elements[i];
  4.     if ( (e.id != checkAllId) && (e.type=='checkbox') && (!e.disabled) ) {
  5.       e.checked = document.getElementById(checkAllId).checked;
  6.     }
  7.   }
  8. }
  9. function checkCheckAll(fmobj, checkAllId ) {
  10.   var TotalBoxes = 0;
  11.   TotalOn = 0;
  12.  
  13.   for (var i=0;i<fmobj.elements.length;i++) {
  14.     var e = fmobj.elements[i];
  15.     if ((e.name != checkAllId ) && (e.type=='checkbox')) {
  16.       TotalBoxes++;
  17.       if (e.checked) {
  18.        TotalOn++;
  19.       }
  20.     }
  21.   }
  22.   if (TotalBoxes==TotalOn) {
  23.     document.getElementById(checkAllId).checked=true;
  24.   }
  25.   else {
  26.    document.getElementById(checkAllId).checked=false;
  27.   }
  28. }

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