Prevent the processing of post requests in AJAX in page URL cache

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Generally, we often use it in development Ajax request , Send requests asynchronously , Then get the data we want , stay Ajax Use in Get There is no page caching problem when requesting data , While using POST Sometimes the page will cache the information we submitted , As a result, the asynchronous request we send cannot correctly return the data we want , So in this case , What should we do ？？？

Here is a way to prevent ajax in post request Page caching url Information ：

$.post(url,data ,ranNum:Math.random()} ,function(data){		
			if("success"==data){
			alert("success");
		        }else{
	            	alert("error");
		        }
		})	

url :  Requested URL  Address 

data :  Requested data 

ranNum :  This is the core of cache prevention , Every time a request is made Math.random() Method to generate a random number , This will refresh url cache 

This ranNum There are many ways to generate , You can also generate in your own way , Just make sure that the data is generated randomly ！ This is it. Ajax Prevent when sending requests url Caching method .

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