const string = "javascript";
const substring = "script";
console.log(string.includes(substring)); //truevar string = "foo",
substring = "oo";
console.log(string.includes(substring));var str = "We got a poop cleanup on isle 4.";
if(str.indexOf("poop") !== -1){
alert("Not again");
}
//use indexOf (it returns position of substring or -1 if not found)const pets = ['cat', 'dog', 'bat'];
console.log(pets.includes('cat'));
// output: true"FooBar".includes("oo"); // true
"FooBar".includes("foo"); // false
"FooBar".includes("oo", 2); // falseconst string = "foo";
const substring = "oo";
console.log(string.includes(substring)); // true
Run code snippet