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POAccelerometer not working in Firefox (works in Chrome)
 

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    <p>This is my HTML:</p> <pre><code>&lt;div class="sl-slide bg9" id="slide9"&gt; &lt;div class="bg9-content"&gt; &lt;header&gt; &lt;h1&gt;&lt;/span&gt;Accelerometer&lt;/h1&gt; &lt;p&gt;Move your laptop to guide the circle into it's place&lt;/p&gt; &lt;div class="how-it-works" ng-click="go('/learn/getting-started-with-html5/accelerometer-how-it-works')"&gt;See how it works&lt;/div&gt; &lt;/header&gt; &lt;div class="accelerometer-game"&gt; &lt;div class="accelerometer-game-board rotated-square-large"&gt; &lt;div class="accelerometer-game-ball" id="game-ball"&gt;&lt;/div&gt; &lt;div class="accelerometer-game-goal"&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; </code></pre> <p>This is my JavaScript:</p> <pre><code>HTML5GuideApp.controller('accelerometerCtrl', function($scope){ console.log('Angular accelerometer controller being called'); // Accelerometer function deviceOrientationHandler(tiltLR, tiltFB, dir){ console.log('device orientation handler fx being called!'); var ball = document.getElementById('game-ball'); // move the game ball ball.style.webkitTransform = "translate("+ tiltLR +"px, "+ (tiltFB*2) + "px)"; ball.style.MozTransform = "translate("+ tiltLR +"px, "+ (tiltFB*2) + "px)"; ball.style.transform = "translate("+ tiltLR +"px, "+ (tiltFB*2) + "px)"; } // test for support if(window.DeviceOrientationEvent){ console.log('Device Orientation if statement being called from controller!'); // listen for the deviceOrientation event and handle the raw data // FIREFOX PROBLEM IS HERE. addEventListener is not being called :( window.addEventListener('deviceorientation', function(eventData){ // gamma is the left-to-right tilt in degrees, where right is positive var tiltLR = eventData.gamma; // beta is the front-to-back title in degrees, where front is positive var tiltFB = eventData.beta; // alpha is the compass direction the device is facing in degrees var dir = eventData.alpha; // call our orientation event handler deviceOrientationHandler(tiltLR, tiltFB, dir); // victory condition if(tiltFB &gt; 40 &amp;&amp; (tiltLR &gt;= -5 &amp;&amp; tiltLR &lt;= 5)){ console.log('VICTORY CONDITION TEXT'); $('header p').text('You win!').css('text-indent', '-52px'); } }, false); } else { $('header p').html("Sorry, you can't play the game! &lt;br&gt;Device orientation is not supported on your browser."); } }); </code></pre> <p>I accessing the accelerometer from within an Angular controller. I am using Firefox 26, which <a href="http://caniuse.com/#feat=deviceorientation" rel="nofollow">supports device orientation events</a>. </p> <p>When I look at the logging in Firefox's Browser Console, I see the following <code>console.logs()</code>:</p> <ul> <li>"Angular accelerometer controller being called" </li> <li>"Device Orientation if statement being called from controller"</li> </ul> <p>I DO NOT see <code>console.log('device orientation handler fx being called!');</code> and I don't know why that fx is not being called.</p> <p>NOTE: The following JavaScript works in the Chrome DevTools console, but returns <code>null</code> when typed in to Firefox's Browser Console:</p> <p><code>document.getElementById('game-ball');</code></p>
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