javascript - XMLHttpRequest doesn't work asynchronously -

javascript - XMLHttpRequest doesn't work asynchronously -

here's js

var req = new xmlhttprequest(); req.open('post','/some-location',true); req.send("a string processed server-side"); var resp = req.responsetext;

trouble is, doesn't work. whenever utilize console.log(resp) see response, it's empty string.

but when alter sec line req.open('post','/some-location',false);, resp processed result. don't want set async false, though.

is there plan javascript way see i'm doing wrong?

it not work because not ajax request. must utilize ajax. not complicated , can find instructions at

http://www.w3schools.com/ajax/default.asp.

javascript ajax post asynchronous xmlhttprequest