contains nodejs code example

Example 1: check for substring javascript

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

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

Example 2: nodejs if contains

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

Example 3: js string does not contain

"this is the string".indexOf("cake"); // -1 (does not contain)
"this string has cake".indexOf("cake"); // 16 (contains)