January 2017
Beginner to intermediate
550 pages
10h 6m
English
Content preview from Object-Oriented JavaScript - Third EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Conditions and loops
Conditions provide a simple but powerful way to control the flow of code execution. Loops allow you to perform repetitive operations with less code. Let's take a look at:
ifconditionsswitchstatementswhile,do...while,for, andfor...inloops
Note
The examples in the following sections require you to switch to the multiline Firebug console. Or, if you use the WebKit console, press Shift + Enter instead of Enter to add a new line.
Code blocks
In the preceding examples, you saw the use of code blocks. Let's take a moment to clarify what a block of code is, because you will use blocks extensively when constructing conditions and loops.
A block of code consists of zero or more expressions enclosed in curly brackets, which is shown ...
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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.Julian F.
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.
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.Amir M.
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.