merge javascript objects in array with same key code example

Example 1: merge two objects javascript

const object1 = {
  name: 'Flavio'
}

const object2 = {
  age: 35
}
const object3 = {...object1, ...object2 } //{name: "Flavio", age: 35}

Example 2: js combine 2 array to object key value

var columns = ["Date", "Number", "Size", "Location", "Age"];
var rows = ["2001", "5", "Big", "Sydney", "25"];
var result =  rows.reduce(function(result, field, index) {
  result[columns[index]] = field;
  return result;
}, {})

console.log(result);