Answers for "how to check whether a substring is present in a string in javascript"

check for substring javascript

const string = "javascript";
const substring = "script";

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

js includes

const pets = ['cat', 'dog', 'bat'];

console.log(pets.includes('cat'));
// output: true

javascript check if string contains a text substring

stringVariable.includes("Your Text");

js check if string contains character

if (your_string.indexOf('hello') > -1)
{
  alert("hello found inside your_string");
}