ArrayOfArraysOnArrayOfObjects.js

/* 
* Version ES5
* Function to convert Array of arrays to Array of Objects 
* @param{Array} Array that contain strings (who will become keys of objects) 
* @param{Array} Array that contain arrays with strings (who will become values of objects) 
* @return{Array} return array of objects
*/
function arrOfArrOnArrOfObj(headers, data){
  var eventsArr = [];
  for (var i = 0; i < data.length; i++) {
    var newEvent = {};
    for (var j = 0; j < headers.length; j++) {
      newEvent[headers[j]] = data[i][j];
  };
  eventsArr.push(newEvent);
}
return eventsArr;
}

/**
 * Version ES6
 * Function to convert an Array of arrays into an Array of objects
 * @param(Array) this is an Array of Arrays
 * @return(Array) return an Array of Objects =>
 */
const arrOfArrOnArrOfObj2 = (headers, data) =>
  data.map((row) => {
    let obj = {};
    row.forEach((col, index) => (obj = { ...obj, [headers[index]]: col }));
    return obj;
  });

var headers = ['FirstName', 'City'];
var values = [['Romain', 'Toulouse'], ['Etienne', 'Eymet']];
console.log(arrOfArrOnArrOfObj(headers, values)); // return [{FirstName: "Romain", City: "Toulouse"}, {FirstName: "Etienne", City: "Eymet"}]