November 2024
Beginner to intermediate
456 pages
11h 5m
English
Content preview from Eloquent JavaScript, 4th 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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22
JAVASCRIPT AND PERFORMANCE
Running a computer program on a machine requires bridging the gap between the programming language and the machine’s own instruction format. This can be done by writing a program that interprets other programs, as we did in Chapter 11, but it’s usually done by compiling (translating) the program to machine code.
Some languages, such as the C and Rust programming languages, are designed to express roughly those things that the machine is good at. This makes them easy to compile efficiently. JavaScript is designed in a very different way, focusing on simplicity and ease of use. Almost none of the operations it lets you express correspond directly to features of the machine. That makes JavaScript a lot more difficult ...
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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.
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.