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    <p>The comments explain why.</p> <p>You need to notify the app that the device is ready. The <code>this</code> object in the context is the event itself. </p> <p>It would be like calling <code>event.receivedEvent</code>.</p> <p>You nee to notify the application that the device is ready, hence the <code>app</code> call.</p> <p>Edit: to further clarify, <code>this</code> is the context of <code>app</code> with the app object except in the <code>onDeviceReady</code> function. The <code>bindEvents</code> function runs this code:</p> <pre><code>document.addEventListener('deviceready', this.onDeviceReady, false); </code></pre> <p>Which binds <code>onDeviceReady</code> to an event via <code>addEventListener</code> which changes the context of <code>this</code> from <code>app</code> to the <code>event</code>.</p> <p>This means, you cannot call methods from <code>app</code> via the <code>this</code> keyword with that changed context. Hope this helps clarify a bit more.</p> <p>Edit 2: see this code for some demonstration: <a href="http://jsbin.com/UGerika/1/edit?html,js,output" rel="nofollow">http://jsbin.com/UGerika/1/edit?html,js,output</a></p> <pre><code> // http://jsbin.com/UGerika/1/edit?html,js,output // Demonstrates the scope of 'this' variable once a // function is bound to event receiver. var app = { var1: function(){ return "i am this"; }, initialize: function() { this.bindEvents(); }, bindEvents: function() { alert('bindevents'); this.onWindowClick(); }, onWindowClick: function() { // in this case, this.var1 is perfection valid // 'this' is still scoped to 'app' object. alert(this.var1); } }; var app2 = { var1: function(){ return "i am this"; }, initialize: function() { this.bindEvents(); }, bindEvents: function() { alert('bindevents'); document.addEventListener('mousedown', this.onWindowClick, false); }, onWindowClick: function() { // in this case, this.var1 is invalid // 'this' is scoped to 'mousedown' event. // we would have to call app2.var1 alert(this.var1); } }; </code></pre>
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    1. POphonegap javascript template explanation seeked usage of the this keyword
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    1. USAndrew Grothe
    1. USAndrew Grothe
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    1. POphonegap javascript template explanation seeked usage of the this keyword
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    1. COyea but there is also: this.bindEvents(); and bindEvents is a function. I dont understant why its ok to call this.bindEvents() like that, and not the other. The comment it self i dident get it. :(
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    2. COSometimes you want to work with the context of a function, you do that with the `this` keyword. In this case, you want to work with another context, the `app` context, which means you need to work with the proper variable for that context.
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    3. COCan you give an example of what the app context could be vs context of a function? :-)
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