Overwrite jQuery ajax to cache repeated calls

ajaxCache.js

var ajaxCache = {};
var oldAjax = $.ajax;

$.ajax = function(opts){
  if (opts.type !== "GET") {
    return oldAjax(opts);
  }
  if (ajaxCache[opts.url]) {
    console.log('cached')
    $.each(['success', 'error', 'complete'], function (index, method) {
      if (opts[method]) {
        ajaxCache[opts.url][method](opts[method])
      }      
    });
    return ajaxCache[opts.url];
  } else {
    console.log('make the call')
    var p = ajaxCache[opts.url] = oldAjax(opts);
    return p.always(function(){
      delete ajaxCache[opts.url];
    })
  }
}