January 2011
Intermediate to advanced
224 pages
5h 43m
English
Content preview from Eloquent JavaScriptBecome 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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Chapter 1. Basic JavaScript: Values, Variables, and Control Flow
Inside the computer’s world, there is only data—that which is not data does not exist. All
this data is in essence just sequences of bits and is thus fundamentally alike. Bits are any
kinds of two-valued things, usually described as 0s and 1s. Inside the computer, they take forms like a high or low electrical charge, a
strong or weak signal, or a shiny or dull spot on the surface of a CD.
Values
Though made of the same uniform stuff, every piece of data plays its own role. In a JavaScript system, most of this data is neatly separated into things called values. Every value has a type, which determines the kind of role it can play. There are six basic types of values: numbers, strings, ...
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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.