Finding matching string from javascript array

Question

I have one array of strings. I need to find all strings starting with a key. for eg: if there is an array [\'apple\',\'ape\',\'open\',\'soap\'] when searched with

Answer 1

You can use filter with regex to accomplish this:

function startsWith(array, key) {
  const matcher = new RegExp(`^${key}`, 'g');
  return array.filter(word => word.match(matcher));
}

const words = ['apple','ape','open','soap']

const key = 'ap'

const result = startsWith(words, key)