我正在尝试学习node.js.我正在通过OReilly书中的一个例子来构建一个使用mongodb和backbone"构建节点应用程序的例子。我遇到了错误,但我还没能解决。
我在这个错误中找了一段时间(在我自己的代码版本中)。大多数类似的案例都与玉器解析评论有关(我在这里没有使用)。看起来另一种可能性是模块版本与此代码或彼此不兼容,但我并不准备深入研究。我完全从示例中复制了代码,而不是使用我自己的版本,我得到了相同的结果。
跟踪指向玉石模板中的一条线,但我不确定问题的确切位置。
这里是示例.js文件中的代码:
var http = require('http');
var express = require('express');
var app = express();
var server = http.createServer(app);
var io = require('socket.io').listen(server);
var catchPhrases = ['Why I oughta...', 'Nyuk Nyuk Nyuk', 'Poifect!', 'Spread out!', 'Say a few syllables!', 'Soitenly!'];
app.set('view engine', 'jade');
app.set('view options', { layout: true});
app.set('views', __dirname + '/views');
app.get('/stooges/chat', function(req, res, next) {
res.render('chat');
});
io.sockets.on('connection', function(socket) {
var sendChat = function(title, text) {
socket.emit('chat', {
title: title,
contents: text
});
};
setInterval(function() {
var randomIndex = Math.floor(Math.random() * catchPhrases.length);
sendChat('Stooge', catchPhrases[randomIndex]);
}, 5000);
sendChat('Welcome to Stooge Chat', 'The Stooges are on the line');
socket.on('chat', function(data) {
sendChat('You', data.text);
});
});
app.get('/?', function(req, res) {
res.render('index');
});
var port = 8080;
server.listen(port);
console.log('Listening on port ' + port);
以下是相应的玉石模板:
extends layout
block scripts
script(type='text/javascript', src='/socket.io/socket.io.js')
script(type='text/javascript')
var socket = io.connect('http://localhost:8080');
socket.on('chat', function(data) {
document.getElementById('chat').innerHTML = '<p><b>' + data.title + '</b>: ' + data.contents + '</p>';
});
var submitChat = function(form) {
socket.emit('chat', {text: form.chat.value});
return false;
};
block content
div#chat
form(onsubmit='return submitChat(this);')
input#chat(name='chat', type='text')
input(type='submit', value='Send Chat')
这是输出:
info - socket.io started
Listening on port 8080
SyntaxError: /home/rob/Documents/Node/views/chat.jade:9
7| socket.on('chat', function(data) {
8| document.getElementById('chat').innerHTML = '<p><b>' + data.title + '</b>: ' + data.contents + '</p>';
> 9| });
10| var submitChat = function(form) {
11| socket.emit('chat', {text: form.chat.value});
12| return false;
Unexpected token ;
at Function (<anonymous>)
at assertExpression (/home/rob/Documents/Node/node_modules/jade/lib/lexer.js:31:3)
at Object.Lexer.attrs (/home/rob/Documents/Node/node_modules/jade/lib/lexer.js:648:20)
at Object.Lexer.next (/home/rob/Documents/Node/node_modules/jade/lib/lexer.js:868:15)
at Object.Lexer.lookahead (/home/rob/Documents/Node/node_modules/jade/lib/lexer.js:114:46)
at Parser.lookahead (/home/rob/Documents/Node/node_modules/jade/lib/parser.js:100:23)
at Parser.peek (/home/rob/Documents/Node/node_modules/jade/lib/parser.js:77:17)
at Parser.tag (/home/rob/Documents/Node/node_modules/jade/lib/parser.js:733:22)
at Parser.parseTag (/home/rob/Documents/Node/node_modules/jade/lib/parser.js:719:17)
at Parser.parseExpr (/home/rob/Documents/Node/node_modules/jade/lib/parser.js:188:21)
答案 0 :(得分:20)
在Jade模板中编写内联JavaScript时,您需要在脚本标记后添加一个点。你也应该缩进你的代码。即它看起来应该是这样的:
script(type='text/javascript', src='/socket.io/socket.io.js')
script(type='text/javascript').
var socket = io.connect('http://localhost:8080');
socket.on('chat', function(data) {
document.getElementById('chat').innerHTML = '<p><b>' + data.title + '</b>: ' + data.contents + '</p>';
});
var submitChat = function(form) {
socket.emit('chat', {text: form.chat.value});
return false;
};