【IE】兼容IE下angular的ajax请求缓存问题

// 兼容IE11 以下
if (!!window.ActiveXObject || "ActiveXObject" in window) {
    //禁用IE对ajax的缓存
   if (!$httpProvider.defaults.headers.get) {
       $httpProvider.defaults.headers.get = {};    
   }
   $httpProvider.defaults.headers.get['If-Modified-Since'] = 'Mon, 26 Jul 1997 05:00:00 GMT';
   // $httpProvider.defaults.headers.common["X-Requested-With"] = 'XMLHttpRequest';
   $httpProvider.defaults.headers.get['Cache-Control'] = 'no-cache';
   $httpProvider.defaults.headers.get['Pragma'] = 'no-cache';
}