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copied!<p>The documentation for the <code>start</code> function is a little misleading. </p> <p>When you call <code>start</code>, <code>WinJS.Application</code> begins to queue and dispatch events, including those which are emitted by <code>Windows.UI.WebUI.WebUIApplication</code>. One of these events is <code>activated</code>, which is what leads to your handler function being called.</p> <p>The important point is that the queuing doesn't begin until you call <code>start</code>. Any events that are emitted by <code>WebUIApplication</code> before the queuing begins are lost forever. </p> <p>This is the situation you have created by delaying your call to <code>start</code>: the <code>activated</code> event is sent by <code>WebUIApplication</code> before the <code>WinJS.Application</code> queue has been set up. The <code>activated</code> event is never received by <code>WinJS.Application</code> and so your handler function is never invoked.</p> <p>I know you are just trying to figure out the life cycle, but there isn't a reason to delay your call to the <code>start</code> function in real life. The only way to get the effect you are trying to create in your code is to place the Promise inside the <code>onactivated</code> handler function, like this:</p> <pre><code>(function () { var app = WinJS.Application; app.onactivated = function () { document.getElementById("pageTitle").innerText += "Gettin' there..."; WinJS.Promise.timeout(5000).then(function () { document.getElementById("pageTitle").innerText = "Rock it!"; }); document.getElementById("pageTitle").innerText += "Almost made it..."; }; app.start(); })(); </code></pre>

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