What I've done today is Extract the domain name from a URL in JavaScript.

Problem is misleading and description is like shit. Data is poor.

What I've done today is Weight for weight in JavaScript.

Although solution is clever, I still think that this problem is so dumb. Bad details, bad description towards input and output, and bad input.

What I've done today is Build a pile of Cubes in JavaScript.

What I've done today is Array.diff in JavaScript.

What I've done today is Directions Reduction in JavaScript.

What I've done today is Valid Braces in JavaScript.

What I've done today is Create Phone Number in JavaScript.