Question

Is that possible to know where is a jQuery function launched from ?

<div>
  <script language="javascript">
    $(document).ready(function () {
        whereAmI($(currentDIV));
    });
  </script>
</div>

Answer 1

There is nothing saved for you about the DOM location whence the currently executing JavaScript was loaded. However, you can use the fact that scripts are executed as they are loaded to achieve this memory:

<div id="target">
  <script>
      var thisScript1 = $('script').filter(':last');
      $(document).ready(function () {
          console.log(thisScript1.closest('div').attr('id')); // prints 'target'
      });
  </script>
</div>
<div id="second">
  <script>
      var thisScript2 = $('script').filter(':last');
      $(document).ready(function () {
          console.log(thisScript2.closest('div').attr('id')); // prints 'second'
      });
  </script>
</div>​

Here, $('script').filter(':last'); refers to the last script element on the page, which at the time of execution is the “current script”. Note that for each script I want to remember, I’ve named the variable housing the script object differently, otherwise it will be clobbered by subsequent scripts. An alternative would be to wrap each script in an immediately executed anonymous function, for the luxury of binding a local thisScript variable.

• DEMO
• How may I reference the script tag that loaded the currently-executing script?