IE比较搞，第一个参数是number，其他浏览器第一个参数是message。Firefox则除了支持message以外还加入了两个参数fileName和lineNumber。但是在其文档中注明了非标准（Non-standard）
IE的文档http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
Firefox的文档https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Error
各个浏览器的比较文档
http://help.dottoro.com/ljfhismo.php
http://www.aptana.com/reference/html/api/Error.html
Creating a new Error object:
Internet Explorer supports the following form:
var errorObj = new Error([number[, description]]);
number
Optional. Integer that specifies the error code. Default is 0. Sets the error property of the Error object.
message
Optional. String that specifies the message of the error. Default is an empty string. Sets the description and messageproperties of the Error object.
Firefox supports the following form:
var errorObj = new Error([message[, fileName[, lineNumber]]]);
message
Optional. String that specifies the message of the error. Default is an empty string. Sets the description and messageproperties of the Error object.
fileName
Optional. String that specifies the name of the file where the error occurs. Default is the file where the Error object is created. Sets the fileName property of the Error object.
lineNumber
Optional. Integer that specifies the line number where the error occurs. Default is the line number, where the Errorobject is created. Sets the lineNumber property of the Error object.
Opera, Google Chrome and Safari support the following form:
var errorObj = new Error([message]);
message
Optional. String that specifies the message of the error. Default is an empty string. Sets the description and messageproperties of the Error object.
本文转自Jake Lin博客园博客，原文链接：http://www.cnblogs.com/procoder/archive/2012/12/06/2804848.html，如需转载请自行联系原作者
