Copying value from one input field to another input field

html, javascript

Solution

function copyTextValue(bf) {
  var text1 = bf.checked ? document.getElementById("Name1").value : '';
  document.getElementById("Name2").value = text1;
  document.getElementById("Name3").value = text1;
}

<input type="checkbox" name="check1" onchange="copyTextValue(this);" />
<input id="Name1"><input id="Name2"><input id="Name3">

Problem

I need a javascript function for copying the value of one input field to another input field based on checkbox selection. However i did some javascript code on click, ``` <script> function copyTextValue() { var text1 = document.getElementById("Name1").value; document.getElementById("Name2").value = text1; document.getElementById("Name3").value=text1; } </script> <input type="checkbox" name="check1" onclick="copyTextValue();"/> ``` Now i need to delete the copied values in those two boxes on uncheck. I stuck up with this. Any help?

Original source