ASP Exists method
Complete Dictionary Object Reference Exists method returns a Boolean value, which is a Boolean value indicating whether the specified key exists in the Dictionary object. If there is, it returns true, otherwise returns false.
grammar
DictionaryObject.Exists(key)
| 参数 | 描述 |
|---|---|
| key | 必需的。要搜索的 key 值。 |
Examples
<%
dim d
set d=Server.CreateObject("Scripting.Dictionary")
d.Add "n","Norway"
d.Add "i","Italy"
d.Add "s","Sweden"
if d.Exists("n")=true then
Response.Write("Key exists!")
else
Response.Write("Key does not exist!")
end if
set d=nothing
%>
输出：
Key exists!
dim d
set d=Server.CreateObject("Scripting.Dictionary")
d.Add "n","Norway"
d.Add "i","Italy"
d.Add "s","Sweden"
if d.Exists("n")=true then
Response.Write("Key exists!")
else
Response.Write("Key does not exist!")
end if
set d=nothing
%>
输出：
Key exists!
Complete Dictionary Object Reference