string .contains js code example

Example 1: javascript string contains

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

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

Example 2: javascript string contains function

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

Example 3: javascript string includes

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

Example 4: string.contains javascript

var str = "We got a poop cleanup on isle 4.";
if(str.indexOf("poop") !== -1){
	alert("Not again");
}

Example 5: javascript string contains

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

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