使用注释行的时候，总是提示5.

在一般编程语言中, 参数都是"传值", 假设一个C函数的原型是int Fun(int value);

当你调用这个函数时, Fun函数首先会在自己的函数栈上copy一份参数, 就是这个函数的副本, 当你在Fun外部修改value值, 并不会影响Fun内部的value.

而Javascript的内嵌函数很特殊, 它并不会copy一个参数副本, 所有函数公用一套参数, 所以你在函数外部修改了参数值, 函数内部也会受影响.

这就是为什么你的show函数, 它的z参数是最后一个值, 因为每一次循环, z都被更改了.  传值和传址的问题

内容正文：1.Write   a   small   JScript   to   split   the   following   string   into   two   parts   and   display   each   part   on   the   console   window,   the   function   should   return   the   length   of   the   second   part   of   the   string:   -  
   
  Input   string  
  “Hi:   hello.”  
   
  Split   Char   =   “:”  
   
  The   result   should   output   to   the   screen   all   the   characters   on   the     left   side   of   the   “:”   and   the   second   line   would   be   all   the   character   on   the   right   side   of   the   “:”  
   
  2.IF   you   saw   the   following   statement   in   a   batch   file   what   would   it   do?  
   
  if   /I   "%2"   EQU   "V"   goto   VALIDATION  
   
  1. What   do   the   terms   “Filegroups”,   “components”   and   “setup   types”   mean   in   Installshield   Professional  
   
  2. Given   a   collection   of   files   what   process   would   you   go   through   using   the   three   items   detailed   in   question   1   to   produce   an   installation.  
   
  3. What   do   you   understand   by   the   term   “Maintenance   Mode”   with   regard   to   Installshield   Professional  
   
  4. What   is   the   equivalent   of   a   Component   in   Installshield   Developer.  
  5. Describe   an   installation   you   have   written   with   Installshield   Professional   –   what   did   it   install   ?   did   you   use   customized   dialogues   ?   if   so   how   did   you   do   this   ?   did   the   installation   require   you   to   write   your   own   scripted   functions   ?   if   so   give   an   example.   Did   you   consider   future   upgrades   of   your   applications   –   expand.  
   
  6. What   do   you   know   about   Windows   Installer   based   installations   i.e.   have   you   had   any   exposure   to   creating   them   ?   if   so   expand.   Where   is   the   installation   information   held   for   such   an   installation   ?