Shulou(Shulou.com)06/03 Report--

This article mainly introduces "how to solve the cache processing of ajax get requests". In the daily operation, I believe many people have doubts about how to solve the cache processing problems of ajax get requests. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts of "how to solve the cache processing of ajax get requests". Next, please follow the editor to study!

The specific analysis is as follows:

In many cases, when the get method of Ajax is called, the correct data cannot be obtained in time due to cache. Here is an analysis of the solution to this problem:

1. Add a random number after url, such as:

The copy code is as follows:

Http://www.test.com?a=a&b=b&r=Math.random();

two。 Add a timestamp after url:

The copy code is as follows:

Var t = new Date () .getTime ()

Http://www.test.com?a=a&b=b&t=t

3. Use the setRequestHeader function of the XMLHttpRequest object to set the value of If-Modified-Since to 0, such as

The copy code is as follows:

XmlHttp.setRequestHeader ('If-Modified-Since', 0)

Here to understand the meaning of If-Modified-Since

4. Use the header function of php

The copy code is as follows:

Header ('Cache-Control:no-cache, must-revalidate')

Set not to use caching

At this point, the study on "how to solve the cache processing of ajax get requests" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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