Javascript object calling value with dynamic variable

Question

This is driving me insane. I am trying to grab an object in javascript using a dynamic variable. Static variables appear to work, yet I cant for the life of me see the difference between the static vars I put in and the dynamic vars.

My snippet below better illustrates the issue

console.log(itemId); //E2
console.log(typeof itemId); //string
console.log(typeof 'E2'); //string
console.log(ganttObject.items['E2']); //object [with data]
console.log(ganttObject.items[itemId]); //undefined

The weird thing is that I have extensively used dynamic calling of objects elsewhere in the script, but it is breaking here.

Tested in Safari & Chrome

does console.log(itemId === 'E2') evaluate to true? And are you absolutely sure nothing else is going on in your code? — Andy Ray
– Andy Ray, Commented Jul 6, 2011 at 3:33
@Andy no, it doesn't evaluate to true... What else can be the difference between two vars apart from type? It would all make sense if the first one console.log(itemId) was undefined or something other than 'E2' — Zak Henry
– Zak Henry, Commented Jul 6, 2011 at 3:43

Mrchief · Accepted Answer · 2011-07-06 03:31:34Z

1

Works for me in FF4: enter image description here

Are you sure you don't have a typo or something in your actual code?

answered Jul 6, 2011 at 3:31

Mrchief

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2 Comments

Zak Henry Over a year ago

Yea thats exactly what I would expect to see. Not so for my code. Those lines are a direct copy paste from where I was attempting to debug.

Zak Henry Over a year ago

Ah, I found the answer at last by tracing the value of itemId to the source. Turns out an edit in the html generation added a space after my id. Moral of the story: > Remember that trailing spaces won't show up on the console window

Zak Henry · Accepted Answer · 2011-07-07 04:08:50Z

0

I found the answer at last by tracing the value of itemId to the source. Turns out an edit in the html generation added a space after my id.

Moral of the story:

Remember that trailing spaces won't show up on the console window

answered Jul 7, 2011 at 4:08

Zak Henry

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