June 2021
Intermediate to advanced
290 pages
9h 21m
Chinese
Content preview from Node与Express开发（第2版）
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.
26
｜
第
3
章
请记住，中间件是按顺序处理的，
static
中间件——常常是第一个或至少是
非常早声明的——会覆盖其他路由。举个例子，如果你把一个
index.html
文
件放在
public
目录下
（可以试试），就会发现得到的是这个文件的内容，而
不是配置的路由。因此，如果你得到了让人迷惑的结果，就检查一下静态文
件，看看是不是有什么东西错误地匹配了路由。
3.6
视图中的动态内容
视图如果被用来发送静态
HTML
，就把操作复杂化了（尽管也可以做），其真正的威力在
于包含动态信息。
比如说在“关于”页，我们想发送一块“虚拟幸运饼”，那就在
meadowlark.js
文件中
，定
义一个“幸运饼”的数组：
const fortunes = [
"Conquer your fears or they will conquer you.",
"Rivers need springs.",
"Do not fear what you don't know.",
"You will have a pleasant surprise.",
"Whenever possible, keep it simple.",
]
修改视图（
/views/about.handlebars
）来显示一块“幸运饼”：
<h1>About Meadowlark Travel</h1>
{{#if fortune}}
<p>Your fortune for the day:</p>
<blockquote>{{fortune}}</blockquote> ...
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.