2020 JavaScript Programming for Beginners : JavaScript from A to Z : Learn The JavaScript Programming Language Completely From Scratch by Robert Kean

Author:Robert Kean [Kean, Robert]
Language: eng
Format: azw3
Publisher: UNKNOWN
Published: 2020-08-10T00:00:00+00:00

Example: ANONYMOUS CLOSURE

Our anonymous function has a self-assessment environment or "closure" with this structure, and then we evaluate immediately. This allows us to hide parent (global) namespace variables.

What is nice about this method is that, without overwriting existing global variables accidentally, you could still access global variables in this function:

Notice that a parenthesis is needed for an anonymous function, because declarations beginning with the keyword function are often called function statements (notice that you can not have unnamed function statements in JavaScript).

EXAMPLE: OBJECT INTERFACE

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