Leaving page with confirmation alert using onbeforeunload and form submission problem solution.

HTML code to release Form submission with out page leave confirmation

<input type="submit" name="submit" value="SUBMIT"  onclick="submit_Form_Okay = true;" />

Javascript code to confirm leave confirmation alert

   var submit_Form_Okay = false;
   window.onbeforeunload = function () {
      if (!submit_Form_Okay) {
         return "Are you sure you want to navigate away from this page?";
      }
   }

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