Compare/filter two arrays where array B contains any substring of A

Question

Okay, so this is something i partially have working (ignoring case sensitivity) comparing the following:

arrayA = [\"apples\", \"Oranges\", \"salt\", \"Crack         


        

Answer 1

You can use filter and some. with regex

• Filter is used to get desired values only.
• Some is used to check if any of values in arrayA matches with current element.
• Regex is used to match the string. i flag is used for case insensitivity.

let arrayA = ["apples", "Oranges", "salt", "Cracked Black Pepper"];
let arrayB = ["salt", "pepper", "orange"]

let find = (A,B) => {
  return B.filter(b=> A.some(a=> new RegExp(b,'i').test(a)))
}

console.log(find(arrayA,arrayB))