Create an object from an array of keys and an array of values

Question

var keys = ['foo', 'bar', 'baz'];
var values = [11, 22, 33]

var result = {};
keys.forEach((key, i) => result[key] = values[i]);
console.log(result);

Alternatively, you can use Object.assign

result = Object.assign(...keys.map((k, i) => ({[k]: values[i]})))

or the object spread syntax (ES2018):

result = keys.reduce((o, k, i) => ({...o, [k]: values[i]}), {})

or Object.fromEntries (ES2019):

Object.fromEntries(keys.map((_, i) => [keys[i], values[i]]))

In case you're using lodash, there's _.zipObject exactly for this type of thing.

Using ECMAScript2015:

const obj = newParamArr.reduce((obj, value, index) => {
    obj[value] = paramArr[index];
    return obj;
}, {});

(EDIT) Previously misunderstood the OP to want an array:

const arr = newParamArr.map((value, index) => ({[value]: paramArr[index]}))

I know that the question is already a year old, but here is a one-line solution:

Object.assign( ...newParamArr.map( (v, i) => ( {[v]: paramVal[i]} ) ) );

I needed this in a few places so I made this function...

function zip(arr1,arr2,out={}){
    arr1.map( (val,idx)=>{ out[val] = arr2[idx]; } );
    return out;
}


console.log( zip( ["a","b","c"], [1,2,3] ) );

> {'a': 1, 'b': 2, 'c': 3} 

The following worked for me.

//test arrays
var newParamArr = [1, 2, 3, 4, 5];
var paramVal = ["one", "two", "three", "four", "five"];

//create an empty object to ensure it's the right type.
var obj = {};

//loop through the arrays using the first one's length since they're the same length
for(var i = 0; i < newParamArr.length; i++)
{
    //set the keys and values
    //avoid dot notation for the key in this case
    //use square brackets to set the key to the value of the array element
    obj[newParamArr[i]] = paramVal[i];
}

console.log(obj);