Any Way To Simulate A *synchronous* Xdomainrequest (xdr) Request

We're making a cross domain call to the google maps geocode API. This was and is working all fine and dandy in modern browsers, but it wasn't working at all in IE8. Looks like it

Solution 1:

asynchron is asynchron. If you want to do something after the request is finished u have to put it into the xdr.onload function.

There is no "wait" function in javascript. You could build one and do a setTimeout loop to check the variable all x-miliseconds. But that would not help u in this case (and its very ugly). In your case you can use the onerror and ontimeout to check if the server had a problem, and the onload to check if the city is in the json.

xdr.onload = function() {
json = jQuery.parseJSON(xdr.responseText);
//check if a city is loaded, go on if true
};
xdr.onerror = function() {
alert('Unable to determine the location of the city and state you entered');
//do whatever u wanna do if something went wrong
xdr.ontimeout = function() {
alert('404 Server');
//do whatever u wanna do if something went wrong
}

i hope this helps you find the way (and by the way, the use of async requests is a much a better way then block the hole javascript/browser ;)

The jQuery doc says:

As of jQuery 1.8, the use of async: false with jqXHR ($.Deferred) is deprecated; you must use the success/error/complete callback options instead of the corresponding methods of the jqXHR object such as jqXHR.done() or the deprecated jqXHR.success()