js setting cache and getting cache example learning

Example, js setting and getting cache.

//Set the cache, get the set cache, in the form of key-value pairs, name value
localStorage.getItem("key"); //Get the value of the key
localStorage.setItem("key", 1) ; //Set the value of the key

Solve the js cache address problem js implementation does not cache

How to not cache js

<script> </li>
<li>document.write("<s"+"script type='text/javascript' src='/js/test.js?"+Math.random()+"' ></scr"+"ipt>"); </li>
<li></script>

Others are similar, just add +Math.random() after the address Note: Because Math.random() only works under Javascript, it can only be called through Javascript

If the above is changed to

(

then Unable to achieve non-caching

js files are not cached

The address of each connection changes, using js random numbers

document.write("");

Several ways to disable page caching (static and dynamic) 1. Add the following quotation fragment to the header of the Asp page:

Response.Buffer = True
Response.ExpiresAbsolute = Now() - 1
Response.Expires = 0
Response.CacheControl = "no-cache"
Response.AddHeader "Pragma", "No-Cache" "

2. Add it to the html code

3. When calling the original page again, pass a parameter Href to the page ="****.asp?random()" The first two methods are said to sometimes fail, while the third method is to pass a random parameter when jumping! Because aspx's cache is related to parameters, if the parameters are different, the cache will not be used, but the page will be regenerated. Passing a random parameter each time can avoid using the cache. This only applies to asp&asp.net.

4. Implement no caching in jsp pages:

response.setHeader("Cache-Control","no-cache"); //HTTP 1.1
response.setHeader("Pragma","no-cache"); //HTTP 1.0
response. setDateHeader ("Expires", 0); //prevents caching at the proxy server

These codes are added in the middle of

as follows

<%
response.setHeader("Cache-Control","no-cache"); //HTTP 1.1
response.setHeader("Pragma","no-cache" ); //HTTP 1.0
response.setDateHeader ("Expires", 0); //prevents caching at the proxy server
%>