regex - jQuery add class to href for target _blank -

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i'd dynamically add class="external-link" hrefs target="_blank" excluding hrefs surrounding <img> tag.

e.g. 

<a href="#" target="_blank" >test</a> // i'd add class="external_link"  <a href="#" target="_blank" ><img src="#" /></a> // nope, no class here thanks.

i assume regex can't figure out how exclude <img> tags.

thanks.

a more general way, can apply tag, using jquery function $obj.children() $obj.children().length tells if there tag or not.

$('a[target="_blank"]').addclass(function(){    if($(this).children().length==0)          return 'external_link';  })

check sample here: http://jsfiddle.net/pwru7/


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