使用Prototype将Rel External更改为Target Blank

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There's been a popular trend to use javascript to add target="_blank" to anchors with rel="external". So in the name of making everything in my site Prototype based I worked out a script to do just that.
  1. <script type="text/javascript">
  2. Event.observe(window, 'load', function() {
  3.     $$('a[rel="external"]').each(function(link){
  4.         if(link.readAttribute('href') != '' && link.readAttribute('href') != '#'){
  5.             link.writeAttribute('target','_blank');
  6.         }
  7.     });
  8. });
  9. </script>

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