November 2014
Beginner
500 pages
9h 20m
English
Content preview from JavaScript: Novice to Ninja
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 4Functions
In the last chapter, we covered arrays, logic, and loops. In this chapter, we’re going to look at functions. A function is a chunk of code that is almost like a small, self-contained mini program that can be referenced by a name. They can help to reduce repetition and make code easier to follow.
In this chapter, we’ll be covering these topics:
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defining functions―function declarations, function expressions, and
Function()constructors -
invoking a function
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return values
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parameters and arguments
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scope―global and local
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hoisting―variables and functions
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callbacks―functions as a parameter
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project―we’ll be using functions to make it simpler to understand the Quiz Ninja code
In JavaScript, functions are considered to be just ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.