While you can pick up the very basics of JavaScript in a day, becoming truly good at it takes much longer. Think of it like ...

Tips for naming JavaScript variables Dynamic typing and JavaScript variables How to work with string variables What you need to know about variable scope What is a user-defined variable in JavaScript?

Scope in JavaScript refers to context (or portion) of the code which determines the accessibility (visibility) of variables. In JavaScript, we have two types of scope, local , and global.

There’s also some memory and performance implications due to re-defining and executing the immediate function every time you run “doSomething”. But, if you understand the implications and you need to ...