Use JavaScript to find a specific link

Question

Could anyone help me with a function for JavaScript which searches the source code and compares all of the links on the site with the specific link I am looking for.

Answer 1

Use Array.prototype.some to see if at least one element in document.links has the href you're looking for.

var has_link = [].some.call(document.links, function(link) {
   return link.href === 'http://www.youtube.com/SPECIFICURL';
});

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You can patch it in old browsers using the patch found at MDN Array#some