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POWorking with JavaScript prototypes and accessing base class fields.
 

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  1. POWorking with JavaScript prototypes and accessing base class fields.
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    <p>I am new to pseudo classes and prototypes in JavaScript and I am having a bit of difficulty implementing it properly. What I am trying to do is have a base 'class' with some fields then create a prototype of that base class with my methods defined as object literals. I am torn between doing it this way and just using singletons inside my base class for my methods. I think though that doing it this way is a little more elegant and I think I am actually not creating every method every time I create a new object. </p> <p>Anyways, the small issue I am having is referencing the fields of my base class in my methods. Because when I try to reference them as this.field this is referring to the current function/ scope but I want it to reference the newly create object. Is there a work around for this or should I change the way I am creating my methods. </p> <p>Below is some code that I think will make it more clear what I am doing and the problem I am having.</p> <pre><code>function BaseClass() { this.items[]; this.fieldOne = "asdasd"; } BaseClass.prototype = { methodOne: function (input) { function addElement(a. b) { var element = {}; element.prop1 = a; element.prop2 = b; //The issue I am having is that items is undefined, how can I refernce the parent class object. this.items.push(element); } function traverse() { //go through a list and add a bunch of elements addElement("ASdasd", 324); } }, methodTwo: function () { //see now fieldOne is asdasd console.log("fieldOne" + fieldOne); } } var forTest = new BaseClass(); forTest.methodTwo(); </code></pre> <p>So yeah I want to have some fields in the parent class that I can access from any method, but I would rather not just put the functions in my base class so that I do not create every method everytime I create a new object from BaseClass. Is there a work around or a better way to implement this? </p> <p>Thanks in advance for the help. </p>
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    1. COadding methods to the prototype does not result in "creating every method every time I create a new object".
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      1. USAlnitak
    2. COWhere and how do you call that `traverse` function?
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      1. USBergi
    3. CO@Alnitak yeah, that is exactly what I am trying to avoid. Sorry if I worded it incorrectly. I do not want to create every method every time a new object is created, only when I call the methods.
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