how to block on ajax call (I want it to block)

Question

Ajax uses callbacks, as it\'s Asynchronous.

I want my call to the remote URL block until there\'s some answer, exactly as in Ajax, but

Answer 1

You can simply set the async : false boolean when using jQuery (check the docs). Take note: As of jQuery 1.8, the use of async: false with jqXHR ($.Deferred) is deprecated; you must use the complete/success/error callbacks.

If you don't want to use jQuery or want to know what's going on under the hood, read this.

xmlhttp.open("GET","ajax_info.txt",false);
xmlhttp.send();
document.getElementById("myDiv").innerHTML=xmlhttp.responseText;

Do wonder why you don't want it to be async though...