A powerful symbol for web developers — Question mark, such a common character. There is nothing to talk about it in most cases. However, in JavaSrtipt, it’s the key for many syntax sugars. Let’s have a look and feel the elegance of JavaScript. 1. Nullish Coalescing Operator: Simplify Your JS Code with Two Question Marks The nullish coalescing operator, which is as simple as two question marks, can make…