How to Enable Disable Required Field Validator using JavaScript

 

function autoSelect()

{

  

var DelRecvName = document.getElementById("TxtDelRecvName").value;

      

       if (DelRecvName == "")

       {

        ValidatorEnable(document.getElementById("RequiredFieldValidator3"), false);

        ValidatorEnable(document.getElementById("RequiredFieldValidator10"), false);

        ValidatorEnable(document.getElementById("RequiredFieldValidator13"), false);

        ValidatorEnable(document.getElementById("RequiredFieldValidator14"), false);

       }

       else

       {

        ValidatorEnable(document.getElementById("RequiredFieldValidator3"), true);

        ValidatorEnable(document.getElementById("RequiredFieldValidator10"), true);

        ValidatorEnable(document.getElementById("RequiredFieldValidator13"), true);

        ValidatorEnable(document.getElementById("RequiredFieldValidator14"), true);

       }

}