我正在通過網頁開發與節點&表達:利用JavaScript堆棧,由Ethan布朗。我在第三章介紹Express的基本概念。我創建的應用程序,meadowlark.js,正如書中所說,並且我得到關於把手模板引擎這個錯誤:把手模板引擎沒有定義
ReferenceError: handlebars is not defined at Object.<anonymous> (/PROJECT_STORAGE/site/meadowlark.js:7:26) at Module._compile (module.js:410:26) at Object.Module._extensions..js (module.js:417:10) at Module.load (module.js:344:32) at Function.Module._load (module.js:301:12) at Function.Module.runMain (module.js:442:10) at startup (node.js:136:18) at node.js:966:3
這裏是我如何安裝把手,其餘的代碼的meadowlark.js:
var express = require('express');
var app = express();
// setup handlebars view engine
var handlbars = require('express-handlebars').create({ defaultLayout: 'main' });
app.engine('handlebars', handlebars.engine);
app.set('view engine', 'handlebars');
app.set('views', __dirname + '/views');
app.set('port', process.env.PORT || 3000);
app.get('/', function(req, res) {
\t res.render('home');
});
app.get('/about', function(req, res) {
\t res.type('about');
});
// custom 404 pg
app.use(function(req, res) {
\t res.status(404);
\t res.render('404');
});
// custom 500 pg
app.use(function(err, req, res, next) {
\t //console.error(err.stack);
\t res.status(500);
\t res.render('500');
});
app.listen(app.get('port'), function() {
\t console.log('Express started on localhost:' + app.get('port') + '; press Ctrl-C to terminate.');
});
ħ我可以修復我的代碼,使Handlebars正確初始化並使handlebars.js運行?