Pan Card Validation Using Javascript

To Validate PanCard you have to use below function 

function ValidatePAN(Obj) {   
        if (Obj.value != "") {
            ObjVal = Obj.value;
            var panPat = /^([a-zA-Z]{5})(\d{4})([a-zA-Z]{1})$/;
            if (ObjVal.search(panPat) == -1) {
                alert("Invalid Pan No");
                Obj.focus();
                return false;
            }
        }
  }


<input type="text" ID="textPanNo" MaxLength="10" onblur="ValidatePAN(this);">




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