文章摘要
文章介绍了名为“Jb51”的一个类，用于存储和管理键值对。该类通过`putv`方法将键值对赋值给对象，通过`delv`方法删除指定键值，通过`clear`方法清空所有键值。文章还详细描述了类的构造函数，用于初始化键值数组，并提供了响应写入键值数量及各键值对功能的代码示例。文章核心内容集中在Jb51类的实现及其在动态网站管理中的应用。
<%
set jb51=new Jb
‘给mp对象赋值
jb51.putv “a”,”jb51.net”
jb51.putv “b”,”www.jb51.net”
jb51.putv “c”,”https://www.jb51.net”
response.write “[键值数量]:”&jb51.count
response.write “<br>”
response.write “[a]:”&jb51.getv(“a”)
response.write “<br>”
response.write “:”&jb51.getv(“b”)
response.write “<br>”
response.write “[c]:”&jb51.getv(“c”)
response.write “<hr>”
‘删除key为”b”的键值
jb51.delv “b”
response.write “[键值数量]:”&jb51.count
response.write “<br>”
response.write “[a]:”&jb51.getv(“a”)
response.write “<br>”
response.write “:”&jb51.getv(“b”)
response.write “<br>”
response.write “[c]:”&jb51.getv(“c”)
response.write “<hr>”
‘清空jb51的所有值
jb51.clear
‘给key为”c”的键值重新赋值
jb51.putv “c”,”https://www.jb51.net”
response.write “[键值数量]:”&jb51.count
response.write “<br>”
response.write “[a]:”&jb51.getv(“a”)
response.write “<br>”
response.write “:”&jb51.getv(“b”)
response.write “<br>”
response.write “[c]:”&jb51.getv(“c”)
response.write “<hr>”
Class MtMap
private arr()
private arr_len
‘构造函数
private Sub Class_Initialize
‘其中 arr(0,n)为key,arr(1,n)为value
arr_len=0
redim arr(1,arr_len)
end sub
‘赋值,如果存在则覆盖
public sub putv(k,v)
dim is_update
is_update=false
arr_len=ubound(arr,2)
for i=0 to arr_len-1
if k=arr(0,i) then
arr(1,i)=v
is_update=true
exit for
end if
next
if not is_update then
arr_len=arr_len +1
redim preserve arr(1,arr_len)
arr(0,arr_len)=k
arr(1,arr_len)=v
end if
end sub
‘取得key为”k”的键值
public function getv(k)
dim v
v=””
for i=0 to arr_len
if k=arr(0,i) then
v=arr(1,i)
exit for
end if
next
getv=v
end function
‘删除key为”k”的键值
public sub delv(k)
arr_len=ubound(arr,2)
for i=0 to arr_len
if k=arr(0,i) then
v=arr(1,i)
for k=i to arr_len-1
arr(0,k)=arr(0,k+1)
arr(1,k)=arr(1,k+1)
next
arr_len=arr_len – 1
redim preserve arr(1,arr_len)
exit for
end if
next
end sub
‘获得jb51中键值的数量
public property get count()
count=arr_len
end property
‘清空jb51中所有的键值
public sub clear()
arr_len=0
redim arr(1,1)
end sub
end class
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