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How can I disable dialog alert and close the website in window.onbeforeunload?

window.onbeforeunload = function() {
  var isVisible = $('#submitbtn').is(':visible');
  if(isVisible==true){
    return null;
  }else{
    return 'you havent close';
  }

How can I disable dialog alert and close the website in window.onbeforeunload?

window.onbeforeunload = function() {
  var isVisible = $('#submitbtn').is(':visible');
  if(isVisible==true){
    return null;
  }else{
    return 'you havent close';
  }
  • javascript
  • onbeforeunload
Share Improve this question edited Dec 8, 2016 at 17:41 Brian Tompsett - 汤莱恩 5,89372 gold badges61 silver badges133 bronze badges asked Dec 6, 2016 at 8:05 kennethlaw126 kennethlaw126kennethlaw126 kennethlaw126 231 silver badge3 bronze badges
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1 Answer 1

Reset to default 7

return undefined; to prevent dialog while window.onbeforeunload

Demo:-

window.onbeforeunload = function(e) {
  var isVisible = $('#submitbtn').is(':visible');
  if (isVisible == true) {
    $(window).unbind();
    return undefined;
    //is there any way to disable dialog alert and close the website??
  } else {
    return 'you havent close';
  }
};
$('#hidebtn').on("click",function(){
  $('#submitbtn').toggle();
});
<script src="https://ajax.googleapis./ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<a href="httpp://google.">Leave page</a>
<input type="button" id="submitbtn" value="You will not get the dialog untill i am visible" />
<input type="button" id="hidebtn" value="hide/show" />

本文标签： javascriptHow to disable dialog alert and close the website in windowonbeforeunloadStack Overflow

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