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POUsing javascript prototype function to initialise variable in 'this' context
 

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  1. POUsing javascript prototype function to initialise variable in 'this' context
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    <p>I'm finding it difficult to explain in words, so here's a snippet of code I'm trying out but Firefox/firebug goes into tailspin!</p> <p>I'm trying to follow <a href="http://www.rgraph.net/libraries/RGraph.bar.js" rel="nofollow">this</a> and <a href="https://sites.google.com/site/abhijitchanda/files/gauge.js" rel="nofollow">this</a> as a guide. What I'm trying to do here is </p> <ol> <li>new MyObject.Method('string',optionsArray);</li> <li><p>optionsArray items are iterated and saved using the prototype function Set()</p> <pre><code>if(typeof(MyObj) == 'undefined') MyObj= {}; MyObj.Method = function initialise(id,options) { this.id = id; this.options = options; this.properties ={}; for (var i = 0; i &lt; this.options.length; i++) // =&gt;options.length=2 (correct) { var obj = this.options[i]; //get the keynames, pass with values to Set() to update properties for (var keys in obj) { console.log(keys); //=&gt; correctly prints 'property1' and 'currentValue' this.Set(keys,obj); //=&gt; this is i guess where it enters a loop? } } } //sets properties MyObj.Method.prototype.Set = function (name, value) { this.properties[name.toLowerCase()] = value; } </code></pre> <p>and in my html page script block, i have </p> <pre><code>window.onload = function () { var options = [ { property1: { show: true, min: 0, max: 100 } }, { currentValue: { show: true, colour: 'black' } } ]; var myObj = new MyObj.Method('someDivId',options); } </code></pre></li> </ol> <p>please advise if I'm over complicating the code. I think checking for hasOwnProperty would help.</p>
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    1. COIt's almost impossible to tell what it is you're trying to do here. That code really doesn't make much sense. The "Set" function is on the prototype object for something called "Gauge.Speedometer" and so will have nothing at all to do with "MyObj" or "MyObj.Method".
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    2. CO@Pointy, corrected.
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    3. COyou are calling `MyObj.Method` before the `options` array is initialised or even declared, was this intentional or just a typo?
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