How to compare array with words and string, but string is sentence

Question

help me please How to compare string and array if there string in array return true, else false string it in not one word, it is sentence

Here is my code

const keyWords = [
  "Hello",
  "hello",
  "help please",
  "Help please",
  "John",
  "john",
  "need",
  "Need"
]

var messageUser = "My name is Peter and I need help";

function check(str) {
  let newMessageUser = str.split(" ")

  for (let i = 0; i <= keyWords.length; i++) {
    for (let j = 0; j <= newMessageUser.length; j++) {
      let answer = (keyWords[i] === newMessageUser[j]) ? true : false;

      return answer
    }
  }
}

console.log(check(messageUser))

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes — Teemu, Mar 29 '22 at 09:04
Are you trying to see if each word in `messageUser` is in `keyWords`? — Luminight, Mar 29 '22 at 09:05
Does this answer your question? [How to check if a string contains text from an array of substrings in JavaScript?](https://stackoverflow.com/questions/5582574/how-to-check-if-a-string-contains-text-from-an-array-of-substrings-in-javascript) — pilchard, Mar 29 '22 at 09:10

score 1 · Answer 1 · answered Mar 29 '22 at 09:07

you can use

array.some to check if one entry match a condition
string.includes to check if word is include in string

const keyWords = ["Hello", "hello", "help please", "Help please", "John", "john", "need", "Need"]

var messageUser = "My name is Peter and I need help";

function check(str) {
  return keyWords.some(word => messageUser.includes(word));
}

console.log(check(messageUser))

score 0 · Answer 2 · answered Mar 29 '22 at 09:44

const keyWords = [
    "Hello",
    "hello",
    "help please",
    "Help please",
    "John",
    "john",
    "need",
    "Need"
]

const messageUser = "My name is Peter and I need help";

const results = keyWords.map((item) => {
    return messageUser.toLowerCase().includes(item.toLowerCase());
});

console.log(results);

score 0 · Answer 3 · answered Mar 30 '22 at 10:38

You can achieve that via single line of code.

const keyWords = [
  "Hello",
  "hello",
  "help please",
  "Help please",
  "John",
  "john",
  "need",
  "Need"
]

var messageUser = "My name is Peter and I need help";

console.log(keyWords.map(item => messageUser.includes(item)))

How to compare array with words and string, but string is sentence

3 Answers3