Question

var b = '1';

How can I create a variable name using the contents of variable b? I am doing this in a each loop, so b will change.

I am wanting the final product to be something like:

var trip1 = '';

How would I accomplish something like that?

var trip + b = '';
var trip.b = '';

Answer 1

No, but you can do it with properties of an object:

var obj = {};
obj.b = '1'
obj['trip' + obj.b] = '';

// or

var obj = {};
var b = '1'
obj['trip' + b] = '';

In JavaScript, you can access properties in two ways:

1. Using a dot and a literal property name, e.g. obj.trip1.

2. Using brackets and a string property name, e.g. obj['trip1'].

In the latter case, the string doesn’t have to be a string literal, it can be the result of any expression, hence the examples above.