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Javascript: stop setInterval after deleting an element

I want to execute a function clearIntervalautomatically after deleting the div containing the function setInterval, and this div is the result of the ajax response because it does not stop after the div is deleted.

$('#element').mouseover(function(){
     $.post('ajax/ajax.php', function(data) {
         $('<div id="tooltip'></div>").appendTo("div#main");
         $('#tooltip').html(data);
         $('#tooltip').show();
     });
}).mouseout(function(){
     clearInterval(intervalId);
     $('#tooltip').empty();
     $('#tooltip').remove();
});

The ajax response datacontains a javascript function setIntervalwith an Id interval handler:

var intervalId = window.setInterval(pics_load, 3000);

I tried using jquery unload , but the same problem:

$('#tooltip').unload(function(){
     clearInterval(intervalId);
}

I tried using it inside ajax response:

$(window).unload(function(){
     clearInterval(intervalId);
}
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3 answers

Have you tried to store the Id interval on yourself #elementusing $.data?

$('#element').mouseover(function() {
     var $this = $(this);
     $.post('ajax/ajax.php', function(data) {
         $('<div id="tooltip'></div>").appendTo("div#main");
         $('#tooltip').html(data);
         $('#tooltip').show();
         // save interval id here
         var intervalId = setInterval('pics_load', 3000);
         $this.data('intervalId', intervalId);
     });
}).mouseout(function(){
     // retrieve intervalId here
     var intervalId = $(this).data('intervalId');
     clearInterval(intervalId);
     $('#tooltip').empty();
     $('#tooltip').remove();
});
+3
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, ... :

  • , #element , ,

... setInterval()? ? ?

, :

  • , , .
  • data-
  • , .

HTML

<div class="container">
    <h1>Stackoverflow</h1>
    <ul>
      <li>Element 1</li>
      <li>Element 2</li>
      <li>Element 3</li>
      <li>Element 4</li>
      <li>Element 5</li>
    </ul>
</div>

jQuery -

$(function() {

  $("ul li").hover(
    function() {
      // on mouse over

      if($(this).prop("data-tooltip") === undefined) {
        // use $.post() and retrieve the tooltip description,
        //   then place it on data-tooltip property

        $.post('ajax/ajax.php', function(data) {               
          // save for next time
          $(this).prop("data-tooltip", data);
          // show
          tooltip($(this), $(this).prop("data-tooltip")); 
        });
      }
      else { 
        // show saved description
        tooltip($(this), $(this).prop("data-tooltip"));
      }

    },
    function() {
      // on mouse out          
      tooltip();          
    }
  );  

});

function tooltip(elm, msg) {
  if(msg)
    $("<span class='tooltip' />").stop().html(msg).appendTo(elm).show();
  else 
    $(".tooltip").hide();
}

, Live Demo on JsBin.

, CSS, .

, Bootstrap Tooltip.

+2

declare intervalId outside the block, and when assigning, do not use var . It is also a good idea to check if intervalId is still not used before setting the interval.

var intervalId=null;
$('#element').mouseover(f    unction(){
     $.post('ajax/ajax.php', function(data) {
         $('<div id="tooltip'></div>").appendTo("div#main");
         $('#tooltip').html(data);
         $('#tooltip').show();
     //somewhere inside this should be:
     if (!intervalId) ... //then set the interval
 });
}).mouseout(function(){
     clearInterval(intervalId);
     intervalId=null;
     $('#tooltip').empty();
     $('#tooltip').remove();
});
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