how to solve object required error in Classic ASP

Question

How to solve the object required "checkMultiple" error. any idea how to disable the cmdButton7 when checkMultiple is checked and enable it when sum = 100. using VBSCRIPT.

Sub disableButton()
    If checkMultiple.value = 1 Then
        document.form1.cmdButton7.enabled = False
    ElseIf sum = 100 Then
        document.form1.cmdButton7.enabled = true
    End If 
End Sub

<input type="checkbox" name="checkMultiple" id="Multiple" onclick="disableButton">Multiple</input>

Answer 1

You didn't even bother to tell us if this is ASP.NET or Classic ASP, or what.

But I'd guess you need to use the ID instead of the name. Try calling it "Multiple" instead of "checkMultiple".

Answer 2

Try qualifying it more explicitly like this for example:

Sub disableButton()
    If document.form1.checkMultiple.value = 1 Then
        document.form1.cmdButton7.enabled = False
    ElseIf sum = 100 Then
        document.form1.cmdButton7.enabled = true
    End If 
End Sub

<input type="checkbox" name="checkMultiple" id="Multiple" 
 onclick="disableButton">Multiple</input>