Creating a JavaScript Object from two arrays

Question

I have two arrays: newParamArr[i] and paramVal[i].

Example values in the newParamArr[i] array: [\"Name\", \"Age\", \"Ema

Answer 1

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);

Answer 2

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]} ) ) );

Answer 3

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}