-Type Checking:
JavaScript​: Dynamically typed, meaning types are checked at runtime.
TypeScript: Statically typed, meaning types are checked at compile time, which helps catch errors early.

-Syntax:
JavaScript​: Flexible syntax, no need to define types for variables and function parameters.
TypeScript: Requires type annotations for variables, function parameters, and return types (though it can infer types in some cases).

-Compilation:
JavaScript​: Directly executed in the browser or a JavaScript engine.
TypeScript: Needs to be compiled into JavaScript before it can be executed.

-Features:
JavaScript​: Core language of the web, with features defined by ECMAScript standards.
TypeScript: Superset of JavaScript, meaning it includes all JavaScript features plus additional features like interfaces, enums, and generics.

-Development Experience:
JavaScript​: Easier to get started with, but less guidance from the editor.
TypeScript: Provides better tooling and IDE support, including autocompletion and error checking, leading to more robust code.

-Community and Ecosystem:
JavaScript​: Larger ecosystem, more widely used in the industry.
TypeScript: Growing rapidly in popularity, especially for large-scale applications, due to its enhanced tooling and maintainability.