javascript string contains value code example

Example 1: check if string contains javascript

var str = "Hello world, welcome to the universe.";

var n = str.includes("world");

Example 2: check for substring javascript

const string = "javascript";
const substring = "script";

console.log(string.includes(substring));  //true

Example 3: javascript string contains function

s = "Hello world";
console.log(s.includes("world"));

Example 4: js string contains

'Bandeira do Brasil'.includes('brasil'); // retorna false