Big fucking hack that you shouldn't use ever.

gistfile1.js

function list (vars, context) {
    if (typeof(context) === 'undefined') {
        context = window;
    }
    return function (item, i) {
        context[vars[i]] = item;
    };
}

[1,2,3].each(list(['foo','bar','baz']))

// foo = 1
// bar = 2
// baz = 3