On Error Resume Next

• • Reply

  18 years ago

  by koenwuyts

  Koen Wuyts

  Antwerp (Belgium), Belgium

  Joined 18 years ago

  Hi All,
  

  
  Is there an On Error Resume Next statement like VB that I can use in JavaScript?
  

  
  rgds,
  Koen

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• • Reply

  18 years ago

  by zingmatter

  zingmatter

  Glasgow, Scotland, United Kingdom

  Joined 19 years ago

  There's an onError event e.g. when loading an image you might code
  <img src="image.jpg" onError="doSomething(this)">
  

  
  There's also an error method associated with a File object (server side stuff though).
  

  
  

  
  Have a look at:
  

  
  

  
  http://developer.netscape.com/docs/manuals/communicator/jsref/index.htm
  

  
  

  
  Otherwise you'll just have to code for all eventualities
  

  
  Hope this helps
  

  
  zing

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• • Reply

  18 years ago

  by koenwuyts

  Koen Wuyts

  Antwerp (Belgium), Belgium

  Joined 18 years ago

  Hi zingmatter,
  

  
  i've a function this is called when a mouse is over a table. when the mouse is over it the image must change BUT the images are held in an array. when you move your mouse to sone over the table and the images aren't loaded in the array yet then I get an error
  

  
  

  Code:

  
  function doOver(Index, img, nr)
  {    
       document.all.im[Index].className='iconmenuitemon';
       document.all.item[Index].className='menuitemon';
       if (img>=0)
       {
             //THIS IS WHERE I GET THE ERROR: IS NULL OR NOT AN OBJECT
             document.all.icon[img].src = imglist_on[nr].src;
       }
  }
  

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  18 years ago

  by zingmatter

  zingmatter

  Glasgow, Scotland, United Kingdom

  Joined 19 years ago

  I'm not sure, but you could be dealing with a browser issue. I think you might find the script will work in Netscape but not MSIE (or the other way round) as they handle the document object model differently.
  

  
  It's just when you code for hiding and showing style sheets elements you code:
  

  
  

  Code:

  
  if (document.layers) { //this is for Netscape
   visible = 'show';
   hidden = 'hide';
  } else if (document.all) { //this is for MSIE
   visible = 'visible';
   hidden = 'hidden';
  }
  

  
  function barTog(menu) {
  

  
    if (document.layers) {
      menu1 = document.layers[menu];
    } else if (document.all) {
      menu1 = document.all(menu).style
    }
  

  
  

  
    if (menu1.visibility == visible) {
      menu1.visibility = hidden;
    }
    else {
      menu1.visibility = visible;
    }
    if (lastMenu != menu) {
      closeMenus(lastMenu);
    }
    lastMenu = menu;
  

  
  }
  

  
  

  
  

  
  Just a thought anyway....
  

  
  zing
  

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  18 years ago

  by James Crowley

  James Crowley

  London, United Kingdom

  Joined 20 years ago

  you could check the image's readystate property, or check if its null:
  

  
  if (document.all.icon[img]!=null)
    // do whatever
  

  
  etc

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• • Reply

  18 years ago

  by koenwuyts

  Koen Wuyts

  Antwerp (Belgium), Belgium

  Joined 18 years ago

  Thanx James,
  

  
  Thats what I need
  

  
  rgds,
  Koen

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• • Reply

  18 years ago

  by koenwuyts

  Koen Wuyts

  Antwerp (Belgium), Belgium

  Joined 18 years ago

  Thanx James,
  

  
  Thats what I need
  

  
  rgds,
  Koen

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• • Reply

  18 years ago

  by koenwuyts

  Koen Wuyts

  Antwerp (Belgium), Belgium

  Joined 18 years ago

  Thanx James,
  

  
  Thats what I need
  

  
  rgds,
  Koen

  Report abuse
• • Reply

  18 years ago

  by koenwuyts

  Koen Wuyts

  Antwerp (Belgium), Belgium

  Joined 18 years ago

  I've a big problem when I want to reply. I always get an error message and then I try again. this is the result 3 posts.
  

  
  
  

  
  sorry,
  Koen

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