Javascript “类型错误：无法读取未定义的属性‘应用’”
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"TypeError: Cannot read property 'apply' of undefined"
提问by glog
Using node, express, socket.io, jade and angular. Getting the error: TypeError: Cannot read property 'apply' of undefined. Any suggestions?
使用 node、express、socket.io、jade 和 angular。得到错误：TypeError: Cannot read property 'apply' of undefined。有什么建议？
index.js:
索引.js：
module.exports = function(app, res) {
res.render('index', { title: 'Express' });
var io = app.get('io');
io.on('connection', function(socket){
});
};
index.jade:
index.jade：
extends layout
block content
script.
var app = angular.module('hackigur', []);
var socket = io.connect();
var refreshTimer = 10;
app.controller('UpdateController', function($scope){
//socket.on('update', function(msg){
//$scope.refreshTimer = msg;
//$scope.$apply();
//});
setInterval(secondTick,1000);
function secondTick() {
if(refreshTimer != 0) {
refreshTimer -= 1;
}
$scope.refreshTimer = refreshTimer;
$scope.$apply();
};
});
h1= title
p Welcome to #{title}
div(ng-controller="UpdateController")
p(ng-bind="refreshTimer")
layout.jade:
layout.jade：
doctype html
html(ng-app="hackigur")
head
title= title
script(src = "/socket.io/socket.io.js")
script(src = "/js/angular/angular.min.js")
body
block content
Full error:
完整错误：
Server listening on port 3000
TypeError: Cannot read property 'apply' of undefined
at Server.(anonymous function) [as on] (D:\Projects\hackigur\node_modules\so
cket.io\lib\index.js:364:15)
at module.exports (D:\Projects\hackigur\server\api\index.js:30:8) at ...
采纳答案by glog
My routerwhich called my index.jspassed appin the module.exportas such:
我router该打电话给我index.js传递app的module.export是这样的：
module.export = function (app) {
app.get( ... , function(..., res) {
require(index.js)(app)(res);
};
I needed to declare a variable for appexternal to my module.export:
我需要app为我的外部声明一个变量module.export：
var x;
module.export = function (app) {
x = app;
app.get( ... , function(..., res) {
require(index.js)(x)(res);
};
Don't fully understand why it worked, but it seemed to pass the correct appobject to app.getby applying the above.
不完全理解它为什么起作用，但它似乎通过应用上述方法将正确的app对象传递给app.get。
