在IE中，可以通过event或window.event获得全局event；而在其他浏览器中，则通过 arguments[arguments.length-1]可获得event实例。但是如果是嵌套调用，如：用户触发事件调用functionA，而 functionA又调用functionB，再由functionB调用functionC，此时如果functionB或functionC中需要获 得event实例，IE仍可通过event或window.event获得，而其他浏览器通过arguments[arguments.length- 1]就无法获得了，通常习惯的做法是把event作为参数传递到functionB及functionC中.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <head> <title>关于arguments,callee,caller等的测试 </title> <meta http-equiv="content-type" content="text/html;" /> </head> <body> <script type="text/javascript"> function testArg() { var sTemp = "test()开始执行\n\n函数定义的正文：\n\n"; sTemp += arguments.callee + "\n\n"; sTemp += "传入参数的长度：\n"; sTemp += arguments.length + "\n\n"; sTemp += "传入参数的内容：\n"; for (var i = 0; i < arguments.length; i++) { sTemp += arguments[i] + "\n"; } sTemp += "\n点击确定，开始调用a();"; alert(sTemp); a(arguments); } function a(args) { var sTemp = "a()开始执行\n\n函数定义的正文：\n\n"; sTemp += arguments.callee + "\n\n"; sTemp += "传入参数的长度：\n"; sTemp += arguments.length + "\n\n"; sTemp += "传入参数的内容：\n"; for (var i = 0; i < arguments.length; i++) { sTemp += arguments[i] + "\n"; } sTemp += "\n当前函数的调用者：\n"; sTemp += arguments.callee.caller + "\n\n"; sTemp += "\n点击确定，开始调用b();"; alert(sTemp); b(args); } function b(args) { var sTemp = "b()开始执行\n\n函数定义的正文：\n\n"; sTemp += arguments.callee + "\n\n"; sTemp += "传入参数的长度：\n"; sTemp += arguments.length + "\n\n"; sTemp += "传入参数的内容：\n"; for (var i = 0; i < arguments.length; i++) { sTemp += arguments[i] + "\n"; } sTemp += "\n当前函数的调用者：\n"; sTemp += arguments.callee.caller + "\n\n"; sTemp += "\n点击确定，开始调用c();"; alert(sTemp); c(args); } function c(args) { var sTemp = "c()开始执行\n\n函数定义的正文：\n\n"; sTemp += arguments.callee + "\n\n"; sTemp += "传入参数的长度：\n"; sTemp += arguments.length + "\n\n"; sTemp += "传入参数的内容：\n"; for (var i = 0; i < arguments.length; i++) { sTemp += arguments[i] + "\n"; } sTemp += "\n当前函数的调用者：\n"; sTemp += arguments.callee.caller + "\n\n"; alert(sTemp); alert("args.callee:\n" + args.callee); alert("args.callee.caller:\n" + args.callee.caller); alert("testArg.arguments.callee.caller:\n" + testArg.arguments.callee.caller); } ; </script> <input type="button" οnclick="testArg('iecn.net','深蓝蝴蝶','枫岩');" value="testArg('iecn.net','深蓝蝴蝶','枫岩');" /> </body> </html>