javascript中arguments,callee,caller

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.

  
    

   
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     关于arguments,callee,caller等的测试 
   
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     <
   
     script 
   
     type
   
     ="text/javascript"
   
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     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);
 }
 ; 
 
   
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