Synchronous Ajax - does Chrome have a timeout on trusted events?

Question

Situation

We have a situation, where we need to onclick-open a new tab in browsers after performing an XHR / Ajax request.

We do this by setti

Answer 1

Your problem is not with XMLHttpRequest, but with delay (sync delay, maybe bug in WebKit/Blink)

See example (http://jsfiddle.net/23JNw/32/ sandbox in Snippet don't allow pop-ups):

function performSlowSyncronousRequest() {
    var endsIn, initial;

    delay = 5000;

    endsIn = new Date().getTime() + delay;

    for (; endsIn >= new Date().getTime();) {}//Delay
    window.open('http://www.thirtykingdoms.com');
}

Test case

Note: that sjax (XMLHttpRequest sync) is considered obsolete by some browsers is very bad for the user experience.

I tried simulate click, but not work:

function clickFire(evt){
	var el, evtFake, pos;

	el = document.createElement("a");
    el.href = "javascript:void(0);";
    el.innerHTML = "test";
	el.onclick = evt;

	document.body.appendChild(el);

	pos = el.getBoundingClientRect();

	evtFake = new MouseEvent("click", {
		bubbles: false,	
		cancelable: false,
		view: window,
		detail: 0,
		screenX: window.screenX,
		screenY: window.screenY,
		clientX: pos.left + 1,
		clientY: pos.top + 1,
		ctrlKey: false,
		shiftKey: false,
		altKey: false,
		metaKey: false,
		button: 1,
		buttons: 0,
		relatedTarget: el
	});
	el.dispatchEvent(evtFake);

	window.setTimeout(function() {
		document.body.removeChild(el);
	}, 1);
}

window.setTimeout(function() {
	clickFire(function() {
		window.open("http://stackoverflow.com");
	});
}, 1000);

Note: The web browsers are very smart today and we will hardly get cheat them.

Solution

Don't use pop-ups ( I hate pop-ups :) ), try simulate "pop-up" using