I've been coding JavaScript quite a lot for ABXY recently, and one thing which has got me really annoyed (apart from JavaScript's odd and overly-flexible "OOP" architecture) is its + operator.

In theory, the + operator is brilliant. Instead of being boring, and only doing one thing, it can be used for both numerical addition, and string concatenation. That's fine, you might say, but tell me; have you ever considered what happens when you want to add together two numerical strings, or concatenate two numbers?

The answer is that in the first instance, JavaScript will concatenate the strings, and in the second, it will add the two numbers together. That's perfect, according to the design, but it's not helpful. Most input and other variables in JavaScript are strings, so every time you want to add two numerical strings together, you have to cast them as numbers, using the parseInt or the parseFloat function, which is easy to forget at best, and downright inefficient at worst.

This is awkward, and unlike the rest of JavaScript; in other situations, JavaScript will happily cast between types to find two which match the operation you're trying to perform. Why is it different here? It's different because JavaScript doesn't know whether you're wanting to concatenate, or to add, and this is the underlying problem. JavaScript should follow PHP's example, and have separate addition and concatenation operators (+ and ., respectively).