js string contains , code example

Example 1: javascript string contains

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

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

Example 2: javascript string includes

'Blue Whale'.includes('blue')  // returns false

Example 3: js string contains

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

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

Example 4: string contains javascirpt

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

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