Js Sort() Custom Function How Can I Pass More Parameters?

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 attribute d

Solution 1:

You may add a wrapper:

functioncompareOnKey(key) {
    returnfunction(a, b) {
        a = parseInt(a[key], 10);
        b = parseInt(b[key], 10);
        if (a < b) return -1;
        if (a > b) return1;
        return0;
    };
}

arrayOfObjects.sort(compareOnKey("myKey"));

Solution 2:

You would need to partially apply the function, e.g. using bind:

arrayOfObjects.sort(compareOn.bind(null, 'myKey'));

Or you just make compareOn return the actual sort function, parametrized with the arguments of the outer function (as demonstrated by the others).

Solution 3:

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

functioncompareByProperty(key) {
    returnfunction (a, b) {
        a = parseInt(a[key], 10);
        b = parseInt(b[key], 10);
        if (a < b) return -1;
        if (a > b) return1;
        return0;
    };
}
arrayOfObjects.sort(compareByProperty('myKey'));

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

Solution 4:

const objArr = [{
    name: 'Z',
    age: 0
  }, {
    name: 'A',
    age: 25
  }, {
    name: 'F',
    age: 5
}]
  
const sortKey = {
    name: 'name',
    age: 'age'
}

constsortArr = (arr, key) => {
    return arr.sort((a, b) => {
        return a[key] < b[key] ? -1 : a[key] > b[key] ? 1 : 0
    })
}
  
console.log("sortKey.name: ", sortArr(objArr, sortKey.name))
console.log("sortKey.age: ", sortArr(objArr, sortKey.age))