Solution to the cache problem where Ajax cannot refresh data under IE9

Use jQuery's getJSON to regularly obtain data from the background and refresh the interface. However, the data cannot be refreshed under IE9. The reason is caching problems. Here is the solution

Use jQuery's getJSON to regularly obtain data from the background and refresh the interface. Refresh the interface. When using the following method, there is no problem under Chrome and Firefox, but the data cannot be refreshed under IE9

$.getJSON(webApp + "/GetShowData.do?limit=" + limit,function(data){
　　//******************
}

Reason Yes, under IE9, when making an Ajax request, if it is the same as the previous request, the data will not be obtained from the browser, but directly from the local. Therefore, if a timestamp is added to the request, IE9 will think it is different. The request, the code is as follows:

$.getJSON(webApp + "/GetHccShowData.do?" + <span style="color: #ff0000;">new Date().getTime()</span> + "limit=" + Hcc.limit,function(data){
　　//******************
}

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

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