Exists Method (Script Runtime)

项目
07/17/2015

Returns true if a specified key exists in the Dictionary object, false if it does not.

Syntax

object.Exists(key)

Arguments

Object
Required. Always the name of a Dictionary object.
Key
Required. Key value being searched for in the Dictionary object.

Remarks

The following example illustrates the use of the Exists method.

function keyExists(k)
{
    var fso, s = "";
    d = new ActiveXObject("Scripting.Dictionary");
    d.Add("a", "Athens");
    d.Add("b", "Belgrade");
    d.Add("c", "Cairo");
    if (d.Exists(k))
        s += "Specified key exists.";
    else 
        s += "Specified key does not exist.";
    return(s);
}

Function KeyExists(k)
    Dim d, msg
    Set d = CreateObject("Scripting.Dictionary")
    d.Add "a", "Athens"
    d.Add "b", "Belgrade"
    d.Add "c", "Cairo"
    If d.Exists(k) Then
        msg = "Specified key exists."
    Else
        msg = "Specified key does not exist."
    End If
    KeyExists = msg
End Function

Applies To:

Dictionary Object

Change History

Date	History	Reason
September 2009	Modified Visual Basic Scripting Edition (VBScript) example.	Content bug fix.

September 2009

Modified Visual Basic Scripting Edition (VBScript) example.

Content bug fix.

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