在JavaScript中的变量内传递变量

Question

I am trying to create a variable that will include another variable.

Example:
var options_id = ...

where 'id' is created dynamically through another variable so that the result could be

var options_1 = ...
var options_2 = ...
etc.

The 'id' is declared dynamically like this:

var id = itemid;

What would be the syntax to include the 'id' variable in the variable

var options_id

?

Answer 1

我想这就是您要寻找的：

window['options_' + id] = ...

Answer 2

Have you thought about using an object instead? You could do:

var id = itemid;
var options = {};
options['id'] = …;

Then access it using:

options.id

Answer 3

I think, that there is an Object in JS for that purpose.

For example:

var options = new Object();

var options.id = 'foo';

or if you want to use numeric indices then you can resort to Array