contains() js code example

Example 1: javascript string contains

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

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

Example 2: js string contains

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

console.log(string.indexOf(substring) !== -1);

Example 3: string contains javascript

const s1 = 'javascript';
const s2 = 'python';

console.log(s1.includes('script')); // true
console.log(s2.includes('script')); // false

Example 4: javascript includes method

arr.includes(searchElement[, fromIndex = 0])