Tag: ToPrimitive

A deep dive into JavaScript's type coercion: why 1 + '2' becomes '12', why [] + 1 yields '1', and how hidden ToPrimitive rules reshape values. Learn clear rules, real examples, and safe practices to avoid bugs.

Explore the surprising outcomes caused by JavaScript's automatic type conversions. Learn the core rules, step through bizarre examples (like [] == ![] or null >= 0), and pick up practical rules to avoid bugs.