Exercise 15: Check if String is Valid URL
Problem Statement
Function `isValidURL(str)` banao jo check kare ki string valid URL hai ya nahi.
Example: isValidURL("https://example.com") => true
Sample Output:
isValidURL("https://example.com") => true
isValidURL("not-a-url") => falseSolution
const isValidURL = (str) => {
try { new URL(str); return true; }
catch { return false; }
};Explanation
Overall Goal:
- String valid URL hai ya nahi check karna.
Real world:
- Form validation: URL inputs.
- Link validation: URL checks.