ASP Exists Method

The ASP Exists Method is used to return a Boolean value that returns true if the specified key exists, otherwise it returns false.

Syntax:

DictionaryObject.Exists(key)

Parameters: This method has a single parameter as mentioned above and discussed below:

• Key: It specifies the name of the key value to be searched in the dictionary.

Example :The below code demonstrates the ASP Dictionary.Exists Method.

ASP

<%
dim dict

'Create a new dictionary
set dict=Server.CreateObject("Scripting.Dictionary")

'Add values to the dictionary
dict.Add "g","geeks"
dict.Add "p","placements"
dict.Add "c","competitive"

'Check if the key exists in the dictionary
if dict.Exists("g")=true then
  Response.Write("The 'g' key exists in the dictionary")
else
  Response.Write("The 'g' key does not exist in the dictionary")
end if

Response.Write("<br>")

'Check for another key in the dictionary
if dict.Exists("m")=true then
  Response.Write("The 'm' key exists in the dictionary")
else
  Response.Write("The 'm' key does not exist in the dictionary")
end if

set dict=nothing
%>

Output:

The 'g' key exists in the dictionary
The 'm' key does not exist in the dictionary