Convert a string to a variable name in javascript?

Question

Ok you have a set of variables:

var height1 = 10
var height2 = 20
...
var height7 = 70;

The user has given input and you need to get the v

Answer 1

Assign the height's as properties of an object.

Something like..

var heightObj = {
        height1 : 10,
        height2 : 20,
        height7 : 70
    };

var hash_div_height_id = "height" + option_name.substring(6);

To access the particular property , use the [] notation to access the property

var newHeight = heightObj[hash_div_height_id];
$('a[name=' + hash + ']').closest('[id^="option"]').height(newHeight);