Answers for "check if string contains a letter javascript"

javascript check if string contains character

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)

how to check if a string contains a certain letter in js

// use the variable.includes() 
const myString = "hello world!"
if(myString.includes("hello")){
  // do something 
}else{
  //also do something
}