有关ASP中Dictionary对象Keys方法的一个小问题 - 19 August 2010 - Blog - PortWatcher's Blog

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有关ASP中Dictionary对象Keys方法的一个小问题

最近在系统地认真地学习ASP````看以下例子````

Code

<%
dim d,a,i
set d=Server.CreateObject("Scripting.Dictionary")
d.Add "n","Norway"
d.Add "i","Italy"
d.Add "s","Sweden"

Response.Write("

Key values:</p>")
a=d.Keys
for i=0 to d.Count-1
Response.Write(a(i))
Response.Write("
")
next

set d=nothing
%>

Output:

Key values:

n
i
s
==================================================================

为什么要用一个中间变量a让我困惑很久```在本地测试了一下````

Code

<%
dim d,a,i
set d=Server.CreateObject("Scripting.Dictionary")
d.Add "n","Norway"
d.Add "i","Italy"
d.Add "s","Sweden"

Response.Write("

Key values:</p>")
for i=0 to d.Count-1
Response.Write(d.Keys(i))
Response.Write("
")
next

set d=nothing
%>

Output:
Key values:

Microsoft VBScript 运行时错误 '800a01c3'

对象不是一个集合: 'Keys'

\wwwroot\test.asp, line 10

====================================================================

再做一个测试`````

=====================================================================

Code

<%
dim d,a,i
set d=Server.CreateObject("Scripting.Dictionary")
d.Add "n","Norway"
d.Add "i","Italy"
d.Add "s","Sweden"

Response.Write("

Key values:</p>")
a = d.Keys(i)
for i=0 to d.Count-1
Response.Write(a)
Response.Write("
")
next

set d=nothing
%>

Key values:

Microsoft VBScript 运行时错误 '800a01c3'

对象不是一个集合: 'Keys'

\wwwroot\test.asp, line 9

================================================================

问了下OnlyLonely大牛```他解决了我的困惑````
原因很简单```Keys方法不支持带参数调用````
ASP没有重载的概念,不能像JavaScript那样直接操纵DOM````

唉```计算机科班的人说话就是专业啊```
因为一直都在自学```所以知识有很多漏洞是肯定的````没办法谁叫我才1X岁````

继续加油吧````

Category: 学习笔记 | Views: 668 | Added by: Jury | Rating: 3.0/1

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