//A function that counts the occurrence of an specific word from string using regex object
function wordCount(w,arr) { let sum = 0 let re = new RegExp(w, 'ig') for (let i = 0; i < arr.length; i++) { //The match() retures null if the word is not in the string //.lenght reture array lenght //If word not fount add 0 Eles add the count sum += (!arr[i].match(re))? 0 : arr[i].match(re).length } return sum
}