Return an object key only if value is true

Question

How do i return an object key name only if the value of it is true?

I\'m using underscore and the only thing i see is how to return keys which is easy, i want to avo

Answer 1

Object.keys gets the keys from the object, then you can filter the keys based on the values

var obj = {1001: true, 1002: false};

var keys = Object.keys(obj);

var filtered = keys.filter(function(key) {
    return obj[key]
});

FIDDLE