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Posted By

sarfraznawaz2005 on 02/11/09


Tagged

javascript event load


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jfherring
jafg
Anothnio


Great Function

 / Published in: JavaScript
 

Ever wanted to add multiple functions to the onload event rather than one? This function lets you achieve exactly that.

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  1. /*
  2. This function lets you add multiple functions to the Load event of the document.
  3.  
  4. Example Usage :
  5. 	addLoadListener(firstFunction);
  6. 	addLoadListener(secondFunction);
  7. 	addLoadListener(twentyThirdFunction);
  8. */
  9.  
  10. function addLoadListener(fn)
  11. {
  12.   if (typeof window.addEventListener != 'undefined')
  13.   {
  14.     window.addEventListener('load', fn, false);
  15.   }
  16.   else if (typeof document.addEventListener != 'undefined')
  17.   {
  18.     document.addEventListener('load', fn, false);
  19.   }
  20.   else if (typeof window.attachEvent != 'undefined')
  21.   {
  22.     window.attachEvent('onload', fn);
  23.   }
  24.   else
  25.   {
  26.     var oldfn = window.onload;
  27.     if (typeof window.onload != 'function')
  28.     {
  29.       window.onload = fn;
  30.     }
  31.     else
  32.     {
  33.       window.onload = function()
  34.       {
  35.         oldfn();
  36.         fn();
  37.       };
  38.     }
  39.   }
  40. }

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