text contains javascript code example

Example 1: check if word is in string javascript

var str = "Hello world, welcome to the universe.";
var n = str.includes("world");

Example 2: javascript string contains

var string = "foo",
    substring = "oo";

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

Example 3: string contains in javascript

const string = "foo";
const substring = "oo";

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