Data Types Since JavaScript is dynamically-typed you don't have to declare function or variable types. JavaScript engines just figure it out. Java, on the other hand, is a statically-typed language.

What you need to know about variable scope What is a user-defined variable in JavaScript? All JavaScript programming happens in an environment like a web browser, Node, or Bun.js.

Method and variable handles vs. Java reflection To truly understand MethodHandles and VarHandles —what they do and why they are useful—it’s helpful to know a few things about reflection in Java.