js sort() custom function how can i pass more parameters?

Question

I have an array of objects i need to sort on a custom function, since i want to do this several times on several object attributes i\'d like to pass the key name for the att

Answer 1

Yes, have the comparator returned from a generator which takes a param which is the key you want

function compareByProperty(key) {
    return function (a, b) {
        a = parseInt(a[key], 10);
        b = parseInt(b[key], 10);
        if (a < b) return -1;
        if (a > b) return 1;
        return 0;
    };
}
arrayOfObjects.sort(compareByProperty('myKey'));

compareByProperty('myKey') returns the function to do the comparing, which is then passed into .sort