How to prevent caching of my Javascript file

Question

I have a simple html    lt html gt   lt body gt   lt head gt   lt meta charset  utf-8  gt   lt meta http-equiv  cache-control  content  no-cache  gt   lt meta http-equiv  expires  content  0  gt   lt meta http-equiv  pragma  content  no-cache  gt   lt script src  test js  gt  lt  script gt   lt  body gt   lt  html gt    In test js I changed a Javascript function  but my browser is caching this file  How to disable cache for script src

User · Answer

You can add a random  or datetime string  as query string to the url that points to your script  Like so     lt script type  text javascript  src  test js q 123  gt  lt  script gt     Every time you refresh the page you need to make sure the value of  q  is changed

User · Answer

lt script src  test js random  lt  php echo uniqid      gt   gt  lt  script gt    EDIT  Or you could use the file modification time so that it s cached on the client    lt script src  test js random  lt  php echo filemtime  test js      gt   gt  lt  script gt

User · Answer

Add a random query string to the src  You could either do this manually by incrementing the querystring each time you make a change    lt script src  test js version 1  gt  lt  script gt    Or if you are using a server side language  you could automatically generate this   ASP NET    lt script src  test js rndstr  lt    getRandomStr     gt   gt  lt  script gt    More info on cache-busting can be found here   https   curtistimson co uk post front-end-dev what-is-cache-busting

User · Answer

Configure your webserver to send caching control HTTP headers for the script   Fake headers in the HTML documents    Aren t as well supported as real HTTP headers Apply to the HTML document  not to resources that it links to

User · Answer

You can append a queryString to your src and change it only when you will release an updated version    lt script src  test js v 1  gt  lt  script gt    In this way the browser will use the cached version until a new version will be specified  v 2  v 3

[javascript] How to prevent caching of my Javascript file?

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