const string = "javascript";
const substring = "script";
console.log(string.includes(substring)); //truevar 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 string = "foo";
const substring = "oo";
console.log(string.includes(substring)); // true
Run code snippetstringVariable.includes("Your Text");There is a String.prototype.includes in ES6:
"potato".includes("to")