An evaluating switch in JavaScript

swtch.js

function swtch(value, cases) {
    return cases[value];
}

var foo = 3;

console.log(
    swtch(foo, {
        1: "one",
        2: "two",
        3: "three",
        4: "four",
        5: "five"
    })
);

// or, as this is minimal syntactic sugar... the more obfuscated version with one less function call:
console.log(
    {
        1: "one",
        2: "two",
        3: "three",
        4: "four",
        5: "five"
    }[foo]
);

This also will work:

   console.log( 
                  swtch(2, ["A","B","C"] )
   );   

No need to stop at objects :) This is not a switch logic though, this is just a lookup.
dbj.cond https://www.npmjs.org/package/dbj.cond leads to simpler syntax and provides comparison logic, just like switch() does:

             dbj.cond( ["A","B","C"] , "C", "C is found in input!", "C is not found");
             //=> return "C is found in input!"

Voila :)

DBJDBJ thanks for the link to the dbj package

While this is clever and fun, it's not obvious and not as maintainable. Unless there is a big benefit, less readable code should be avoided.