how to convert array element to be object keys in javascript code example

Example 1: js array to object with keys

const subLocationTypes = (location.subLocationTypes || []).reduce((add, cur) => {
add[cur.key] = cur.value;
return add;
}, {});

Example 2: js array to object with keys

const arr = ['a','b','c'];
const res = arr.reduce((a,b)=> (a[b]='',a),{});
console.log(res)