Javascript - regex pattern match

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Javascript

I needed a javascript function that would pattern match a text value for 9 digit num. Within the function, i do land up in the else part and get the message "A Number" but then receive a FALSE for the next validation, when i enter a 9 digit number say 123456789. I get FALSE even with regSSN1.match(textValue). Where am i going wrong?

function validateFor9DigitNumber() {
  var txt = document.getElementById('<%= txt9Digit.ClientId %>');
  var textValue = parseInt(txt.value);
  var regSSN1 = new RegExp("^\d{9}$");
  if (isNaN(textValue)){
    alert("Not a Number");
  } else {
    alert("A Number");
    alert(regSSN1.test(textValue));
  }
}