javascript - How to enable key down event if it's already disabled in jquery -

below code disabling enter button.

$(document).ready(function () {     $(window).keydown(function (event) {         if ((event.keycode == 13) && ($('#btnsubmit').disabled)) {             event.preventdefault();             return false;         }     }); 

in cases want enable , want enter key work expected. me out in fixing this?

use flag approach:

var enterdisabled = true;    $(document).ready(function() {      $(window).keydown(function(event) {      // check if enterdisabled flag on , disable enter      if (enterdisabled && (event.keycode == 13) && ($('#btnsubmit').prop('disabled'))) {        alert("enter disabled");        event.preventdefault();        return false;      }    });    $("#entertoggler").click(function() {      enterdisabled = !enterdisabled;      $("#status").text(enterdisabled);    });  });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>  <input type="submit" id="btnsubmit" value="submit" disabled="disabled" />  <button id="entertoggler">toggle enter</button>  <br/>enter disabled: <span id="status">true</span>

simply set flat false when need enter work...