运行时错误......无法弄清楚为什么...... [英] Runtime Error...Can't Figure Out Why...
问题描述
您好。
这是我读过的一本书中的参考文件，其中核心主题是''事件听众'使用的'
' 。
我正在尝试在Firefox中加载文件，它给我一个错误信息：
行：5
字符：1
错误：''文档''未定义
代码：800A1391
来源：微软JScript运行时错误
我需要这个文件才能工作，因为它是我所有编码的参考文件。
这里的内容是这里的文件。
var Core = {};
// W3C DOM 2活动模型
if（document.addEventListener）
{
Core.addEventListener = function（target，type，listener）
{
target.addEventListener（type，listener，false）;
};
Core.removeEventListener = function（target，type，listener）
{
target.removeEventListener（类型，监听器，假）;
};
Core.preventDefault =功能（事件）
{
event.preventDefault（）;
};
Core.stopPropagation = function（event）
{
event.stopPropagation（）;
};
}
// Internet Explorer事件模型
else if（document.attachEvent）
{
Core.addEventListener = function（target，type，listener）
{
//阻止两次添加相同的侦听器，因为DOM 2
//事件会忽略这样的重复
if（Core._findListener（target，type，listener）！= -1）
return;
// listener2以两种方式调用侦听器作为目标的方法，取决于这个版本的IE支持，
//并将全局事件对象作为参数传递
var listener2 = function（）
{
var event = window.event;
if（Function.prototype.call）
{
listener.call（target，event ）;
}
else
{
target._currentListener = listener;
target._currentListener（event）
target._currentListener = null;
}
};
//使用IE的attachEvent方法添加listener2
target.attachEvent（" on" + type，listener2）;
//创建一个描述这个监听器的对象，这样我们可以
//稍后清理它
var listenerRecord =
{
目标：目标，
类型：类型，
listener：listener，
listener2：listener2
};
//获取对包含窗口对象的引用目标
var targetDocument = target.document || target;
var targetWindow = targetDocument.parentWindow;
//为这个听众创建一个唯一的ID
var listenerId =" 1" + Core._listenerCounter ++;
//在窗口对象中存储此监听器的记录
if（！targetWindow._allListeners）
targetWindow._allListeners = {};
targetWindow._allListeners [listenerID] = listenerRecord;
//存储此监听器's目标中的ID
if（！target._listeners）target._listeners = [];
target._listeners [target._listeners.length] = listenerId;
//设置Core._removeAllListeners来清理所有
//卸载时的听众
if（！targetWindow._unloadListenerAdded）
{
targetWindow._unloadListenerAdded = true;
targetWindow.attachEvent（
" onunload"，Core._removeAllListeners）;
}
};
Core.removeEventListener = function（target，type，listener） ）
{
//找出听众是否真的被添加到目标
var listener Index = Core._findListener（
target，type，listener）;
if（listenerIndex == -1）return;
//获取对包含目标的窗口对象的引用
var targetDocument = target.document || target;
var targetWindow = targetDocument.parentWindow;
//从窗口对象获取监听器的记录
var listenerId = target._listeners [listenerIndex];
var listenerRecord =
targetWindow._allListeners [listenerId];
//删除侦听器，并从目标中删除其ID
target.detachEvent（" on" + type，listenerRecord.listener2）;
target ._listeners.splice（listenerIndex，1）;
//从窗口对象中删除监听器的记录
delete targetWindow._allListeners [listenerId];
};
Core.preventDefault =功能（事件）
{
event.returnValue = false;
};
Core.stopPropagation = function（event）
{
event.cancelBubble = true;
};
Core._findListener = function（target，type，listener）
{
//获取添加到目标的侦听器ID数组
var listeners = target._listeners;
if（！听众）返回-1;
//获取对包含目标的窗口对象的引用
var targetWindow = targetDocument.parentWindow;
//向后搜索（加快onunload处理），
//找到听众
for（var i = listeners.length - 1; i> = 0; i--）
{
//从目标获取听众的身份
var listenerId =听众[i];
//从窗口对象获取监听器的记录
var listenerRecord =
targetWindow._allListeners [listenerId];
//将类型和监听器与检索到的记录进行比较
if（listenerRecord.type == type&&
listenerRecord.listener ==听众）
{
返回i;
}
}
返回-1;
};
Core._removeAllListeners = function（）
{
var targetWindow = this;
for（id in targetWindow._allListeners）
{
var li stenerRecord = targetWindow._allListeners [id];
listenerRecord.target.detachEvent（
" on" + listenerRecord.type，listenerRecord.listener2）;
删除targetWindow._allListeners [id];
}
};
Core._listenerCounter = 0;
}
Core.addClass = function（target，theClass）
{
if（！Core.hasClass（target，theClass））
{
if（target.className =="" ;）
{
target.className = theClass;
}
else
{
target.className + =" " + theClass;
}
}
};
Core.getElementsByClass = function（theClass ）
{
var elementArray = [];
if（typeof document.all！=" undefined"）
{
elementArray = document.all;
}
其他
{
elementArray = document.getElementsByTagName（" *"）;
}
var matchedArray = [] ;
var pattern = new RegExp（"（^ |）" + theClass +"（| $）"）;
for（ var i = 0; i< elementArray.length; i ++）
{
if（pattern.test（elementArray [i] .className））
{
matchedArray [matchedArray.length] = elementArray [i];
}
}
返回matchedArray;
};
Core.hasClass = function（target，theClass）
{
var pattern = new RegExp（"（^ |）" + theClass +"（| $）"）;
if（pattern.test（target.className））
{
返回true;
}
返回false;
};
Core.removeClass = function（target，theClass）
{
var pattern = new RegExp（"（^ | ）" + theClass +"（| $）"）;
target.className = target.className.replace（pattern，" $ 1"）;
target.className = target.className.replace（/ $ /，""）;
};
Core.getComputedStyle = function（element，styleProperty）
{
var computedStyle = null;
if（typeof element.currentStyle！=" undefined"）
{
computedStyle = element.currentStyle;
}
else
{
computedStyle =
document.defaultView.getComputedStyle（element，null）;
}
return computedStyle [styleProperty];
};
Core.start = function（runnable）
{
Core.addEventListener（window，" load"，runnable.init）;
};
-
通过WebmasterKB.com发布消息
http://www.webmasterkb.com/Uwe/Forum...cript/200808/1
Hello.
This is a reference file from a book I read in which the core subject is the
use of ''event listeners''.
I''m trying to load the file in Firefox and it''s giving me an error message:
Line: 5
Char: 1
Error: ''document'' is undefined
Code: 800A1391
Source: Microsoft JScript Runtime Error
I need this file to work because it''s the reference file for all of my coding.
Here''s the contents of the file here.
var Core={};
// W3C DOM 2 Events model
if (document.addEventListener)
{
Core.addEventListener = function(target, type, listener)
{
target.addEventListener (type, listener, false);
};
Core.removeEventListener = function(target, type, listener)
{
target.removeEventListener(type, listener, false);
};
Core.preventDefault = function(event)
{
event.preventDefault();
};
Core.stopPropagation = function(event)
{
event.stopPropagation();
};
}
// Internet Explorer Events model
else if (document.attachEvent)
{
Core.addEventListener = function(target, type, listener)
{
// prevent adding the same listener twice, since DOM 2
// Events ignores duplicates like this
if (Core._findListener(target, type, listener) != -1)
return;
// listener2 calls listener as a method of target in one of
// two ways, depending on what this version of IE supports,
// and passes it the global event object as an argument
var listener2 = function()
{
var event = window.event;
if (Function.prototype.call)
{
listener.call(target, event);
}
else
{
target._currentListener = listener;
target._currentListener(event)
target._currentListener = null;
}
};
// add listener2 using IE''s attachEvent method
target.attachEvent("on" + type, listener2);
// create an object describing this listener so we can
// clean it up later
var listenerRecord =
{
target: target,
type: type,
listener: listener,
listener2: listener2
};
// get a reference to the window object containing target
var targetDocument = target.document || target;
var targetWindow = targetDocument.parentWindow;
// create a unique ID for this listener
var listenerId = "1" + Core._listenerCounter++;
// store a record of this listener in the window object
if (!targetWindow._allListeners)
targetWindow._allListeners = {};
targetWindow._allListeners[listenerID] = listenerRecord;
// store this listener''s ID in target
if (!target._listeners) target._listeners = [];
target._listeners[target._listeners.length] = listenerId;
// set up Core._removeAllListeners to clean up all
// listeners on unload
if (!targetWindow._unloadListenerAdded)
{
targetWindow._unloadListenerAdded = true;
targetWindow.attachEvent(
"onunload", Core._removeAllListeners);
}
};
Core.removeEventListener = function(target, type, listener)
{
// find out if the listener was actually added to target
var listenerIndex = Core._findListener(
target, type, listener);
if (listenerIndex == -1) return;
// get a reference to the window object containing target
var targetDocument = target.document || target;
var targetWindow = targetDocument.parentWindow;
// obtain the record of the listener from the window object
var listenerId = target._listeners[listenerIndex];
var listenerRecord =
targetWindow._allListeners[listenerId];
// remove the listener, and remove its ID from target
target.detachEvent("on" + type, listenerRecord.listener2);
target._listeners.splice(listenerIndex, 1);
// remove the record of the listener from the window object
delete targetWindow._allListeners[listenerId];
};
Core.preventDefault = function(event)
{
event.returnValue = false;
};
Core.stopPropagation = function(event)
{
event.cancelBubble = true;
};
Core._findListener = function(target, type, listener)
{
// get the array of listener IDs added to target
var listeners = target._listeners;
if (!listeners) return -1;
// get a reference to the window object containing target
var targetDocument = target.document || target;
var targetWindow = targetDocument.parentWindow;
// searching backward (to speed up onunload processing),
// find the listener
for (var i = listeners.length - 1; i >= 0; i--)
{
// get the listener''s ID from target
var listenerId = listeners[i];
// get the record of the listener from the window object
var listenerRecord =
targetWindow._allListeners[listenerId];
// compare type and listener with the retrieved record
if (listenerRecord.type == type &&
listenerRecord.listener == listener)
{
return i;
}
}
return -1;
};
Core._removeAllListeners = function()
{
var targetWindow = this;
for (id in targetWindow._allListeners)
{
var listenerRecord = targetWindow._allListeners[id];
listenerRecord.target.detachEvent(
"on" + listenerRecord.type, listenerRecord.listener2);
delete targetWindow._allListeners[id];
}
};
Core._listenerCounter = 0;
}
Core.addClass = function(target, theClass)
{
if (!Core.hasClass(target, theClass))
{
if (target.className == " ")
{
target.className = theClass;
}
else
{
target.className += " " + theClass;
}
}
};
Core.getElementsByClass = function(theClass)
{
var elementArray = [];
if (typeof document.all != "undefined")
{
elementArray = document.all;
}
else
{
elementArray = document.getElementsByTagName("*");
}
var matchedArray = [];
var pattern = new RegExp("(^| )" + theClass + "( |$)");
for (var i = 0; i < elementArray.length; i++)
{
if (pattern.test(elementArray[i].className))
{
matchedArray[matchedArray.length] = elementArray[i];
}
}
return matchedArray;
};
Core.hasClass = function(target, theClass)
{
var pattern = new RegExp("(^| )" + theClass + "( |$)");
if (pattern.test(target.className))
{
return true;
}
return false;
};
Core.removeClass = function(target, theClass)
{
var pattern = new RegExp("(^| )" + theClass + "( |$)");
target.className = target.className.replace(pattern, "$1");
target.className = target.className.replace(/ $/, " ");
};
Core.getComputedStyle = function(element, styleProperty)
{
var computedStyle = null;
if (typeof element.currentStyle != "undefined")
{
computedStyle = element.currentStyle;
}
else
{
computedStyle =
document.defaultView.getComputedStyle(element, null);
}
return computedStyle[styleProperty];
};
Core.start = function(runnable)
{
Core.addEventListener(window, "load", runnable.init);
};
--
Message posted via WebmasterKB.com
http://www.webmasterkb.com/Uwe/Forum...cript/200808/1
推荐答案
）"）;
for（var i = 0;我< elementArray.length; i ++）
{
if（pattern.test（elementArray [i] .className））
{
matchedArray [matchedArray.length] = elementArray [i];
}
}
返回matchedArray;
< br $>
};
Core.hasClass = function（target，theClass）
{
var pattern = new RegExp（ "（^ |）" + theClass +"（|
)");
for (var i = 0; i < elementArray.length; i++)
{
if (pattern.test(elementArray[i].className))
{
matchedArray[matchedArray.length] = elementArray[i];
}
}
return matchedArray;
};
Core.hasClass = function(target, theClass)
{
var pattern = new RegExp("(^| )" + theClass + "( |
）"）;
if（pattern.test（target） .className））
{
返回true;
}
返回false;
};
Core.removeClass = function（target，theClass）
{
var pattern = new RegExp（"（^ |）" + theClass +"（|
)");
if (pattern.test(target.className))
{
return true;
}
return false;
};
Core.removeClass = function(target, theClass)
{
var pattern = new RegExp("(^| )" + theClass + "( |
）"）;
target.className = target.className.replace（pattern，"
)");
target.className = target.className.replace(pattern, "
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