1const string = "javascript";
2const substring = "script";
3
4console.log(string.includes(substring)); //true
1var string = "foo",
2 substring = "oo";
3
4console.log(string.includes(substring));
1var str = "We got a poop cleanup on isle 4.";
2if(str.indexOf("poop") !== -1){
3 alert("Not again");
4}
5//use indexOf (it returns position of substring or -1 if not found)
1
2var str = "Hello world, welcome to the universe.";
3var n = str.includes("world");
4
1var str = "We got a poop cleanup on isle 4.";
2if(str.indexOf("poop") !== -1){
3 alert("Not again");
4}
1var string = "foo",
2var substring = "oo";
3
4console.log(string.includes(substring));