Lots of strangeness happens here. You can never be sure what you are going to face.

JavaScript. What is it? Why, it is the common scripting language used to add client-side behavior to websites, like the one you see before you.

JavaScript can be fun, it can also be dangerous if misused. But on this site, we make JavaScript strange.

Did you know?

typeof NaN is number. If that won't blow your mind, NaN === NaN returns false.

You know you can just click here.