Javascript ajax call adding “?=####” to the end of my call

Question

I have a simple ajax command calling a URL to my server:

$.ajax({ type: "GET", url: "/action" });

And the response from my logs show as /action?_=1423024004825

Is there anyway to remove this?

Answer 1

_=#### is a cache buster. When you have the cache setting set to false it will append that to the query string to make it so browsers think it is a new request and not use a cached version of the response.

To stop it from getting appended just change the setting to true (cached responses will now be used)

jQuery.ajaxSetup({cache:true});

You can also set this on a per request basis by adding the cache setting to the options

jQuery.ajax({
    type: "GET", 
    url: "/action",
    cache:true 
});

http://api.jquery.com/jQuery.ajax

cache (default: true, false for dataType 'script' and 'jsonp')

Type: Boolean

If set to false, it will force requested pages not to be cached by the browser. Note: Setting cache to false will only work correctly with HEAD and GET requests. It works by appending "_={timestamp}" to the GET parameters. The parameter is not needed for other types of requests, except in IE8 when a POST is made to a URL that has already been requested by a GET.