function showThis() { console.log(this); }
: Using new creates a new object and sets its prototype automatically. âš¡ Recommended Resources If you want to dive deeper into these "weird" parts: js the weird parts
: Variables declared with var are also hoisted but initialized as undefined . This is why you can sometimes log a variable before it’s declared and get undefined instead of a ReferenceError. 2. Objects and Functions: Everything is an Object function showThis() { console
It gets weirder:
For developers, JavaScript is a language of paradoxes. It is the most widely used language in the world, yet it was famously prototyped in just . This rushed origin led to a collection of behaviors often called "The Weird Parts." This rushed origin led to a collection of
The last one is a parsing quirk. In some engines, {} at the start of a line is treated as an empty block, not an object. So {} + [] becomes + [] which coerces to 0.