Node.js/jade语法错误:unexpected token;

Node.js/jade syntax error: unexpected token ;

本文关键字：unexpected token 错误 语法 js jade Node      更新时间：2023-09-26

我正在尝试学习node.js。我正在完成OReilly书中的一个示例"使用mongodb和backbone构建节点应用程序"。我遇到了一个错误，我还没能解决它。

我找了一段时间这个错误(在我自己的代码版本中)。大多数类似的情况都与jade解析注释有关(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，但我不准备深入研究这个问题。我完全从示例中复制了代码，而不是使用我自己的版本，并且我得到了相同的结果。

痕迹指向玉模板中的一行，但我不确定问题真正在哪里。

下面是示例.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);

对应的翡翠模板:

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')

输出如下:

   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)

在Jade模板中编写内联JavaScript时，您需要在script标记后添加一个点。你还应该缩进你的代码。也就是说，它应该看起来像这样:

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;
    };
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