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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Primitive data types recap
Let's quickly summarize some of the main points discussed so far:
- There are five primitive data types in JavaScript:
- Number
- String
- Boolean
- Undefined
- Null
- Everything that is not a primitive data type is an object.
The primitive number data type can store positive and negative integers or floats, hexadecimal numbers, octal numbers, exponents, and the special numbers-
NaN,Infinity, and-Infinity. - The string data type contains characters in quotes. Template literals allow embedding of expressions inside a string.
- The only values of the Boolean data type are
trueandfalse. - The only value of the null data type is the
nullvalue. - The only value of the undefined data type is the
undefinedvalue. - All values become
truewhen converted to ...
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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.