Question

I have a few variables:

var test1 = 1500;
var test2 = 500;
var test3 = 3000;
var test4 = 20000;

And I have an another variable like this:

var list = 'test3,test1';

This is not fixed obviously, so that can be 'test4,test1,test2' etc..

Now, I need a price variable. test3+test1 = 4500

var price = '4500';

But I don’t have any idea how to do that. Here is what I have so far:

var names = [];
$(':checkbox:checked').each(function() {
    names.push(this.name);
});
var list = names.join(',');

Any ideas?

Answer 1

You should change your variables into a proper object:

var prices = {
    "test1": 1500,
    "test2": 500,
    "test3": 3000,
    "test4": 20000
}

Now you can add like so:

var price = 0;
$(':checkbox:checked').each(function() {
    price += prices[this.name];
});
// The price variable now contains the sum