Objects and variables in Javascript [duplicate]

Question

Ok so imagine I have the following object

var House= function(){
    var color = "#0000FF";
}

Then I add the following method:

House.prototype.drawHouse = function(){
    document.write("House " + this.color);
    // ^^ How do I reference the color property of the object?
}

How is the best way to reference the color attribute from the drawHouse method?

This question is similar to: What is the scope of variables in JavaScript?. If you believe it’s different, please edit the question, make it clear how it’s different and/or how the answers on that question are not helpful for your problem. — dumbass
– dumbass, Commented Dec 21, 2024 at 8:56

zerkms · Accepted Answer · 2013-02-14 21:26:51Z

7

You cannot.

var color is a local variable, whose visibility scope is only limited by the anonymous function body.

You need to implement it like:

var House= function(){
    this.color = "#0000FF";
}

And after that you'll be able to access it via this.color in a drawHouse()

answered Feb 14, 2013 at 21:26

zerkms

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1 Comment

+1 thanks for the insight. Not sure why the question was downvoted.