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jquery come back to previous value of an input with esc key

On a lot of applications, when typing an input, the use of the esc key returns the previous value. How can I do this with jquery.

Solution

  • Try this, it should do what you want.

    var prevValue = "";
$("#Input").focus(function() {
  prevValue = $(this).val();
}).keyup(function(e) {
  if (e.keyCode == 27) {
    $(this).val(prevValue);
  }
});
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input value="hello" id="Input" />