Web Reference: Jan 13, 2025 · Static typing performs type checking at compile time, requiring developers to explicitly state data types for variables, parameters, return values, etc. Dynamic typing does type checking at runtime, allowing code to run without those declarations. Sep 9, 2024 · JavaScript has traditionally been a dynamically typed language, meaning variables can take on values of any type without type declarations. However, in recent years optional static typing solutions like TypeScript and Flow have grown in popularity. Dec 9, 2016 · Static type checking allows us to verify that the invariants we specified are true without actually running the program. And if there’s any violation of those invariants, they will be discovered before runtime instead of during it.
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