Using Enums In Javascript

Question

I have the following ENUM in my Javascript:

var letters = { "A": 1, "B": 2, "C": 3.....}

And to use this I know use:

letters.A

But I was wondering if there was a way that i could replace A with a variable. I have tried something like

var input = "B";

letters.input;

but this does not work.

Any suggestions?

Thanks

Why would you expect letters.input to mean something when you never defined letters.input in the first place? — Adam Mihalcin
– Adam Mihalcin, Commented Mar 2, 2012 at 6:09
@AdamMihalcin letters is the enum and input is in replace of the hardcoded A in the first line. — user1219627
– user1219627, Commented Mar 2, 2012 at 6:11

Paul · Accepted Answer · 2012-09-07 16:11:27Z

12

letters[input];

It expects a string, so letters.B == letters["B"], and:

var letters = { "A": 1, "B": 2, "C": 3 },
    input = "B";
console.log(letters[input]);

outputs 2.

answered Mar 2, 2012 at 6:12

Paul

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1 Comment

@row1 I cant yet ... time limt