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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