jQuery anti cache paremeter

shannonwrege

I have seen it written that to disable the jQuery anti cache parameter, you should set ajax.cache = true. Is this a configuration parameter for the table or something global? Can someone give a code example?

shannonwrege

FYI, I tried setting:

$.ajaxSetup({ cache: true });

on the document load but I still get the "_" parameter in the query string of the ajax loads for the datatable.

allan

I have seen it written that to disable the jQuery anti cache parameter, you should set ajax.cache = true.

The exact opposite . Set it to false to disable - e.g.:

ajax: {
  url: '...'.
  cache: false
}

Allan

shannonwrege

Well, I actually want to disable the anti cache parameter (i.e. enable browser caching), but this code snipped is what I needed. Thanks!

allan

Yeah the double negative is a bit odd, but cache: false is how you do it in jQuery.

Allan

shannonwrege

Followup to this earlier question. I have the ajax caching working, but only if I initially load the table that way. In other words:

var table = $('#my-table').DataTable({
      ajax: {
        url: "/test.json",
        cache: true
      }
}

and then calling

table.ajax.url("/test2.json").load(function () {
  ...
}

works fine. A cached version of test2.json is loaded. It seems that the initial setting instructed future ajax calls to use the cache.

I can not figure out how to do the initial load from data supplied on the page request and then do a cached ajax call. So if for example I initialize the table this way:

var table = $('#my-table').DataTable({
      data: variableWithJsonData;
}

Then executing ...

table.ajax.url("/test2.json").load(function () {
  ...
});

... adds the cache busting querystring parameter. Is there a way to make the ajax load call with instructions to use the cached version if available?