javascript - Jquery show loading div while waiting for script to finish -

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i have javascript looks this

$("#loading").show();  // script takes time  $("#loading").hide();

i want show loading dialog wait script end , close it. doesn't work this. opens loading dialog after script finished , stays open.

what's problem?

try use toggle

$(document).ready(function(){      $("button").click(function(){          $("#loading").toggle();      });  });
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>  <p id="loading">loading</p>    <button>show hide loading</button>


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