Using a string to reference an object name

Question

I'm trying to replicate a "feature" of PHP (And in most languages) in Javascript.

Here it is in PHP:

$objectName = 'ObjectA';

$someObject->$objectName->someMethod();

Basically using a string variable to reference an object variable.

So in Javascript, I was hoping to do something like:

var objectName = "ObjectA";

someObject.[objectName].someMethod();

Anyone know how to do this? Or if its even possible?

Nick Craver · Accepted Answer · 2010-09-02 23:29:58Z

14

You almost have it, just remove the first ., like this:

var objectName = "ObjectA";
someObject[objectName].someMethod();

If you want to search for more info around this, it's called bracket notation.

answered Sep 2, 2010 at 23:29

Nick Craver

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2 Comments

Charlie Over a year ago

Gah. I was one damn character off. I didn't know what it was called or I would've Googled Bracket Notation. Thanks a lot!

Jonathan Over a year ago

This does not work beyond depth one. If you have a string like "Object.a.attribute.val" you cannot object[str] the last attribute. How to achieve this?

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