How to check whether a string contains a substring which is present in a predefined array in JavaScript?

Question

What is the most efficient way to find out if a JavaScript array contains substring of a given string?

For example in case I have a JavaScript array

var a = ["John","Jerry","Ted"];

I need the condition which returns true when I compare the above array against the string:

"John Elton"

developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/… — hindmost
– hindmost, Commented Nov 27, 2018 at 10:09

Stephen.W · Accepted Answer · 2018-11-27 10:12:45Z

4

For ES6:

var array = ["John","Jerry","Ted"];
var strToMatch = "John Elton"
array.some(el => strToMatch.includes(el))

answered Nov 27, 2018 at 10:12

Stephen.W

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Mohammad Usman · Accepted Answer · 2018-11-27 10:10:11Z

4

You can use .some() and .includes() methods:

let arr = ["John","Jerry","Ted"];
let str = "John Elton";

let checker = (arr, str) => arr.some(s => str.includes(s));

console.log(checker(arr, str));

answered Nov 27, 2018 at 10:10

Mohammad Usman

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Comments

Davi · Accepted Answer · 2018-11-27 10:19:02Z

0

In case you cannot use ES6:

let arr = ["John","Jerry","Ted"];
let str = "John Elton";

var match = arr.some(function (name) {
  return str.indexOf(name) > -1;
});

console.log(match);

answered Nov 27, 2018 at 10:19

Davi

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