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.

‘Higher-order functions’ is a fancy term for functions that take other functions as arguments or that return functions. Very powerful!

JavaScript Typing Unlike strongly typed programming languages such as C#, JavaScript is loosely typed and allows you to assign any data type to a variable without giving the variable a specific type.

Hello,I'm using some JavaScript and a cookie to gather general user information and then pass it to another page which in turn uses JavaScript to write the variable data into a form text box, but ...