August 2017
Intermediate to advanced
272 pages
5h 32m
Chinese
Content preview from Node.js物聯網裝置開發
Become 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,
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.
18
|
第一章 連接世界
安裝 JXcore
JXcore 能夠在一台僅有 16 MB 記憶體的小小 WiFi 路由器上，執行一支功能完
整的聊天伺服器。目前該專案的目標是把 JavaScript 執行環境所需記憶體限制
在 1 MB 以下。
JXcore 的二進位檔，支援許多各種不同的開發板，包括 Intel Galileo 或 Edison
（ia32）、 RiotBoard（Android ARM）、 Raspberry Pi（Debian ARM），你也可
在 Mac OS X 或 Windows 上運行 JXcore。若想玩玩看，請到
http://jxcore.com/
downloads
下載執行環境。
下載後，把 JXcore 所在路徑加到系統的環境變數
path
裡，然後就可從命令列
執行
jx
，類似於執行
node
一樣。不同於 Node.js，JXcore 允許我們包裹應用
程式、在系統上以原生形式執行，至於詳細做法與解釋，請到官網查詢文件：
http://jxcore.com/turn-node-applications-into-executables
。
Node.js API
Node.js 帶有許多不同的模組，當要檢視硬體時，這些模組至關重要，進一步詳情請見
Node.js API 說明文件（
https://nodejs.org/api/documentation.html
）。底下小節提供緩衝區
與串流的概觀介紹。
緩衝區
你使用的 Node.js 程式庫，若跟硬體和網路協定有關聯，應該都會碰到緩衝區（ ...
Become 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,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.