Getting started
1. Installing
2. Hello world example
3. Express application generator
4. Basic routing
5. Serving static files in Express
6. FAQ
Guide
1. Routing
2. Writing middleware for use in Express apps
3. Using middleware
4. Using template engines with Express
5. Error handling
6. Debugging Express
7. Express behind proxies
8. Moving to Express 4
9. Moving to Express 5
10. Database integration
Advanced topics
1. Developing template engines for Express
2. Process managers for Express apps
3. Security updates
4. Production Best Practices: Security
5. Production best practices: performance and reliability
API
API
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This document uses PHP Chinese website manual Release
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使用app.engine(ext, callback)方法創(chuàng)建您自己的模板引擎。ext指的是文件擴(kuò)展名，并且callback是模板引擎函數(shù)，它接受以下項(xiàng)作為參數(shù)：文件的位置，選項(xiàng)對象和回調(diào)函數(shù)。
以下代碼是實(shí)現(xiàn)用于呈現(xiàn).ntl文件的非常簡單的模板引擎的示例。
var fs = require('fs') // this engine requires the fs module
app.engine('ntl', function (filePath, options, callback) { // define the template engine
fs.readFile(filePath, function (err, content) {
if (err) return callback(err) // this is an extremely simple template engine
var rendered = content.toString().replace('#title#', '<title>' + options.title + '</title>') .replace('#message#', '<h1>' + options.message + '</h1>')
return callback(null, rendered) })})
app.set('views', './views') // specify the views directory
app.set('view engine', 'ntl') // register the template engine您的應(yīng)用現(xiàn)在可以呈現(xiàn).ntl文件。使用以下內(nèi)容在views目錄中創(chuàng)建一個名為index.ntl的文件。
#title# #message#
然后，在您的應(yīng)用程序中創(chuàng)建以下路線。
app.get('/', function (req, res) {
res.render('index', { title: 'Hey', message: 'Hello there!' })})當(dāng)您向主頁發(fā)出請求時，index.ntl將會呈現(xiàn)為HTML。