harmless_ransom_note.js

const harmlessRansomNote = (search, text) => {
  let result = true

  const textArr = text.toLowerCase().split(' ')
  const searchArr = search.toLowerCase().split(' ')
  const hash = {}

  for (let idx in textArr) {
    const word = textArr[idx]
    if (!hash[word]) hash[word] = 0
    hash[word]++
  }

  for (let idx in searchArr) {
    const word = searchArr[idx]

    if (!hash[word] || hash[word] < 1) {
      result = false
      break
    }

    hash[word]--
  }

  return result
}

const search = 'this is so so so'
const text = 'is that this really abc is so so cool vvv'

const result = harmlessRansomNote(search, text)
console.log(`'${search}' is ${!result ? ' not' : '' } fully presented in '${text}', the result is '${result}'`)