Editing nexttick This edit will create a new revision. Your details (optional) Name Email (won’t be displayed; might be used for Gravatar) URL Test case details Title * Published (uncheck if you want to fiddle around before making the page public) Description (in case you feel further explanation is needed)(Markdown syntax is allowed) Are you a spammer? (just answer the question) Preparation code Preparation code HTML (this will be inserted in the <body> of a valid HTML5 document in standards mode) (useful when testing DOM operations or including libraries) Include JavaScript libraries as follows: <script src="//cdn.ext/library.js"></script> Define setup for all tests (variables, functions, arrays or other objects that will be used in the tests) (runs before each clocked test loop, outside of the timed code region) (e.g. define local test variables, reset global variables, clear canvas, etc.) (see FAQ) var nextTick2 = function () { function nextTick(fn) { return setTimeout(fn, 0); } return nextTick; }(); var nextTick3 = function () { function nextTick(fn) { var image = new Image(); image.onerror = fn; image.src = 'data:,foo'; } return nextTick; }(); var nextTick4 = function () { function nextTick(fn) { var script = document.createElement('script'); script.onload = function() { document.body.removeChild(script); fn(); } script.src = 'data:text/javascript,'; document.body.appendChild(script); } return nextTick; }(); var nextTick5 = function () { // FAILS ON SOME BROWSERS SO USE SETTIMEOUT INSTEAD function nextTick(fn) { var req = new XMLHttpRequest; req.open('GET','data:text/plain,foo', false); req.onreadystatechange = function() { req.onreadystatechange = null; fn(); }; req.send(null); } return nextTick; }(); var nextTick6 = function () { var key = 'nextTick__' + Math.random(); var queue = []; window.addEventListener('message', function (e) { if (e.data !== key) { return; } queue.shift()(); },false); function nextTick(fn) { queue.push(fn); window.postMessage(key, '*'); } return nextTick; }(); var nextTick7 = function () { function nextTick(fn) { requestAnimationFrame(fn); } return nextTick; }(); Define teardown for all tests (runs after each clocked test loop, outside of the timed code region) (see FAQ) Code snippets to compare Test 1 Title Async (check if this is an asynchronous test) Code nextTick2(function() { deferred.resolve(); }); Test 2 Title Async (check if this is an asynchronous test) Code nextTick2(function() { deferred.resolve(); }); Test 3 Title Async (check if this is an asynchronous test) Code nextTick3(function() { deferred.resolve(); }); Test 4 Title Async (check if this is an asynchronous test) Code nextTick4(function() { deferred.resolve(); }); Test 5 Title Async (check if this is an asynchronous test) Code nextTick5(function() { deferred.resolve(); }); Test 6 Title Async (check if this is an asynchronous test) Code nextTick6(function() { deferred.resolve(); }); Test 7 Title Async (check if this is an asynchronous test) Code nextTick7(function() { deferred.resolve(); });