当'child_process.fork( './driver‘,’‘溢出时,会发生错误:
Error: listen EADDRINUSE
at exports._errnoException (util.js:746:11)
at Agent.Server._listen2 (net.js:1156:14)
at listen (net.js:1182:10)
at Agent.Server.listen (net.js:1267:5)
at Object.start (_debugger_agent.js:20:9)
at
我有一个Dart应用程序,它从javascript读取数据和调用方法,从该数据(在D3中)绘制一棵树,我想在data端创建js对象,然后在javascript端绘制它。
但在Dart方面,我得到了预期的结果,无法正确地转换为js对象。
javascript:
var treeRoot = [{}]; // <-- I want to fill this object on Dart side
function updateTree() {
var nodes = tree.nodes(treeRoot).reverse(), // <- use this objec
所有服务器堆栈跟踪都打印在一行上。它们看起来像是字符串,然后才被打印出来。示例:
I20151215-23:18:57.623(0)? Exception while invoking method 'adminCheckAdmin' { stack: 'Error: When the modifier option is true, validation object must have at least one operator\n at checkModifier (packages/aldeed_simple-schema/simple-schema-va
我有qz-tray.js的离子,它是工作的,但在成功打印后,应用程序崩溃时,我想导航到其他页面,这是日志
ionic.bundle.min.js:142 TypeError: Cannot read property 'params' of undefined
at i (ionic.bundle.min.js:423)
at Object.x.transitionTo (ionic.bundle.min.js:423)
at Array.<anonymous> (ionic.bundle.min.js:423)
at Object.e [as invoke] (i
我正在尝试使用Angular和Qz-Tray打印简单的数据文本。但每次我尝试打印时都会显示错误:
qz-tray.js:35 ReferenceError: Sha256 is not defined
at Object.hash (qz-tray.js:408)
at WebSocket._qz.websocket.connection.sendData (qz-tray.js:184)
at qz-tray.js:280
at j (rsvp.min.js:1)
at new t (rsvp.min.js:1)
at Object.promise (qz-tray.js:395)
at O
我正在使用child_process.exec和node.js在coffeescript中执行Ubuntu命令。当我执行以下命令时:
list = child_process.exec("ls")
print list
它打印以下内容:
[Object Object]
为什么没有打印出正确的ls命令输出?我应该怎么做才能得到正确的命令输出?
// make object properties private
var Bike = function() {
var speed = 100; // private variable
function addUnit(value) { // private function
return value + "KM/H";
}
this.getSpeed = function () { // public function
return addUni