HTML javascript链接在HTML 5 Boilerplate中包含url变量

Question

When I was looking at HTML 5 Boilerplate I noticed one thing: Almost every script link goes like this : '../script.js?v=1' . This 'v=1' part caught my attention so I did some research and found out that it is there for cache-ing purposes. My question is : How is this technique called and how is it done? Is there a way to change/ update version numbers automatically?

Answer 1

This is usually called a cachebusting URL.

If you change script.js , you can simply change it to ?v=2 to force the browser to skip the cache. (because there is not cached content for script.js?v-2 )

Most server-side web environments have plugins that can automatically generate cache-busting URLs, usually by including a hash of the file in the querystring.