Collection of methods to disable ajax caching in (ASP/PHP/JSP/html/js)-JS Tutorial-php.cn

Collection of methods to disable ajax caching in (ASP/PHP/JSP/html/js)

亚连

Release： 2018-05-25 15:45:15

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The simplest way to disable ajax caching is to directly generate a random number on the js side, but sometimes you will find that this method is not applicable to posts. If we want to disable ajax caching of data submitted by posts, how should we deal with it? Below I We have compiled many examples of disabling ajax caching

ajax caching has advantages, but it also has disadvantages. Caching sometimes leads to misoperations and affects the user experience. If your WEB project does not require the ajax caching function, you can press The above method is used to disable ajax caching.

1. Disable ajax caching in ASP:

' is placed at the beginning of the ASP web page

Response.expires=0

Response.addHeader("pragma","no-cache")

Response.addHeader("Cache-Control","no-cache, must-revalidate")

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2. Disable Ajax caching in PHP:

//放在PHP网页开头部分

header("Expires: Thu, 01 Jan 1970 00:00:01 GMT");

header("Cache-Control: no-cache, must-revalidate");

header("Pragma: no-cache");

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##3. Disable Ajax caching in JSP:

//放在JSP网页最开头部分

response.addHeader("Cache-Control", "no-cache");

response.addHeader("Expires", "Thu, 01 Jan 1970 00:00:01 GMT");

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4. Force update by adding random characters to the web page: such as

var url = &#39;http://url/&#39;;

url += &#39;?temp=&#39; + new Date().getTime();

url += &#39;?temp=&#39; + Math.random();

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5. If it is static HTML, you can add HTTP headers to disable caching, such as:

<meta http-equiv="pragma" content="no-cache" />

<meta http-equiv="Cache-Control" content="no-cache, must-revalidate" />

<meta http-equiv="expires" content="Thu, 01 Jan 1970 00:00:01 GMT" />

<meta http-equiv="expires" content="0" />

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6. You can send it in XMLHttpRequest Add the following code before the request to prohibit ajax caching:

XMLHttpRequest.setRequestHeader("If-Modified-Since","0");
XMLHttpRequest.send(null);

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7. jQuery ajax Load prohibition

Provide a function in jQuery to prevent ajax from using cache Method: Add the following statement to the head javascript file to solve the problem.

$.ajaxSetup ({ 
  cache: false //关闭AJAX相应的缓存 
});

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The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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