To check if a string contains a given substring in JavaScript, you can use the 'includes' method.
In this example,
// JavaScript
function containsSubstring(str, substr) {
return str.includes(substr);
}
const str = "Hello World";
const substr = "World";
const contains = containsSubstring(str, substr);
console.log(`String contains substring '${substr}': ${contains}`);
String contains substring 'World': true
In this tutorial, we learned How to Check if a String contains given Substring in JavaScript language with well detailed examples.