jquery - how to append dynamic version number to javascript tag -

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i have html file in loading multiple js files . need declare variable n append each of script tag. how can ? appending variable parameter

  1. this can done server side client side. safest way server side. set variable session containing current system date of server , add onto page.
  2. if wish client side, need script tags in code src attribute , append variable containing current date it. can call piece of code window.onload() or document.ready() per will.

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