Convert String name into javascript variable name?

Question

Problem with example:

Variable name: var product5519 = 10;

I can get this name in the form of a String i.e

var str = "product5519"

Is there any way to convert it into variable name so that i can use the value assigned to

product5519

I know one way to solve this problem i.e using eval(str)

If there is any another way to solve it please tell?

Answer 1

Once you are certain creating a global variable was the Right Thing to do, you can add your variable to the window object, like so:

window[str] = 42;

This works because variable lookups end up trying the window object if the variable was not defined in an inner scope.

Answer 2

It's a bit hacky but if you wanted to make a global variable you could do:

var str = "product5519";
window[str] = value;

You could then access the variable like:

window[str];
window.str;
str;         // Assuming that there is no local variable already named "str"

Answer 3

you could do something like:

window['product5519'] = 'value'

it may be better to have an array of products, depending on the situation ofc.

Answer 4

You can use an associative array:

var variables = [];
variables['product5519'] = 10;

console.log(variables['product5519']);