how can a firefox extension detect content-type of the page loaded ?

Posted by bosky101 on Stack Overflow See other posts from Stack Overflow or by bosky101
Published on 2010-05-17T09:05:50Z Indexed on 2010/05/17 9:10 UTC
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since my extension's pageload is triggered even when I view css or js files, i want to add another check that triggers my extension only when the current page's content-type is text/html .

//eg: at my page load handler
function onPageload(){

  // only want to proceed if content-type reflects a text/html or */html page
  if ( contentTypeIsHtml() ){
    //continue here
  }
}

what should contentTypeIsHtml() do ?

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