Javascript object variable name as number

Question

Below, i shows up as "i", not the number I am iterating through. How do I correct this? Thanks!

for (i = 0; i < 10000; i++) {
     var postParams = {
        i : 'avalueofsorts'
     };
}

are you sure you want to create a new object every iteration? — zzzzBov
– zzzzBov, Commented Jun 3, 2011 at 16:44

meder omuraliev · Accepted Answer · 2011-06-03 17:04:42Z

7

for (var i = 0, l = 10000; i < l; ++i) {
     var postParams = {};
     postParams[i] = 'avalueofsorts'
}

Per Cybernate's comment, you can create the object beforehand and just populate it otherwise you create it each time. You probably want this:

for (var i = 0, l = 10000, postParams = {}; i < l; ++i) {
     postParams[i] = 'avalueofsorts'
}

answered Jun 3, 2011 at 16:40

meder omuraliev

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3 Comments

@Meder: I guess the postParams should be declared outside the for loop other wise it gets defined for every iteration.

@Frank ~ Note that you're not using an object here, but an array, really. Just a comment.

Yea, going from Ruby Hashes to Java structs to this I'm trying to figure out semantics still . Thanks :)

generalhenry · Accepted Answer · 2011-06-03 20:17:59Z

0

To expand on the 'you want an array comment':

for (var i = 0, postParams = []; i < 10000; i++) {
     postParams.push('avalueofsorts');
}

In javascript arrays are just objects with a few extra methods (push, pop etc...) and a length property.

answered Jun 3, 2011 at 20:17

generalhenry

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