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POJavascript "this" variable switching from specific object to DOMWindow
 

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  1. POJavascript "this" variable switching from specific object to DOMWindow
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    <p>I have a problem with Javascript forcing the [object DOMWindow] into an function I have in an object's prototype. The full error I get is below:</p> <p><code>Uncaught TypeError: Object [object DOMWindow] has no method 'positionconvert'</code></p> <p>Basically what I'm doing is inside the object prototype under certain conditions I'm creating a <code>var interval</code> that counts off with <code>window.setInterval()</code>:</p> <p><code>var interval = window.setInterval(this.alertanimate, 500);</code></p> <p>the <code>alertanimate</code> function is inside the same prototype, and uses the <code>this</code> variable in this line:</p> <p><code>this.positionconvert(this.alerticon, -69, 55);</code></p> <p>(positionconvert is yet another function, and alerticon is an object). The problem is when I get <code>window.setInterval</code> involved js starts assuming <code>this</code> is the DOM and not the object prototype, like I intended, presenting the above error. When I hard-code this to work with a specific object it works, but somewhere in this variable-passing the <code>this</code> variable loses its connection to the object. I hope this all makes sense? What am I doing wrong?</p>
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    1. USArtur Sapek
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    1. COpossible duplicate of [setTimeout and "this" in JavaScript](http://stackoverflow.com/questions/591269/settimeout-and-this-in-javascript)
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      1. USFelix Kling
 

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