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base.js with sandboxing

Terrence Sheflin asked:

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I'm using an implementation of base.js from here:

I attempted to combine this with sandboxing to get "private" variables. For example:

// Sandbox.
(function () {
var privateVar;
myClass = Class.extend({
    init: function (bindingOptions) {
        privateVar = 0;
getPrivateVar: function() {
    return privateVar;
setPrivateVar: function(value) {
    privateVar = value;

However, when I try to make 2 instances, of course the "privateVar" has the same value. For example:

var class1 = new myClass();
var class2 = new myClass();
class1.setPrivateVar(5); // now both class1 and class2 report privateVar as "5"

Is there any way to get private variables using this methodology that are scoped to the object without resorting to "this._privateField" ?
Tags: Javascript


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