javascript - Script to check if there are other scripts -

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While storing web pages, dynamic content should be treated differently How can I find out that a page Does any javascript use?

This will end in a browser extension, so there is no need to separate it from the findings.

simply & lt; Script & gt; should be OK to check the tag 

  if (document.querySelectorAll ("script"). Length) {// there are scripts on this page}   
 You can  scripts  scan the whole page for  onclick , etc in HTML tags, but it will slow down for a larger page

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