Is it possible to change the classic ASP response once you've written to it?

Question

If I have a classic ASP response in the format:

someJsFunctionName({"0":{"field1":0,"field2":"","field3":0,"field4":2,"field5":1,"field6":1}});

that is built with

response.write "someFunctionName(" 
someMethod(param1, param2).Flush
response.write ");"

If I want to insert a new field to the response

someJsFunctionName({"0":{"field1":0,"field2":"","field3":0,"field4":2,"field5":1,"field6":1, "field7":2}});

Would I be able to call a method similar to

response.replace("}});", "\"field7\":2}});")

?
Or would I have to clear the entire response to write a new string into it?
Would I have to keep track of the result of someMethod(param1, param2).Flush, modify that string before writing it to the response?

Build it as a string variable then pass it to `Call Response.Write(myfuncstring)`. To be clear there is no way to manipulate the Response buffer other then `Call Response.Clear()` and start again before `Call Response.Flush()` after that there is no going back as the headers are already written. — user692942, Mar 14 '14 at 16:42

score 3 · Accepted Answer · answered Mar 14 '14 at 16:57

I can't see any need for you to output directly to the Response buffer, to be clear you can only manipulate the Response buffer up to the point you Call Response.Flush() as this clears the buffer and writes the headers. Up to that point you can still Call Response.Clear() to empty the buffer without writing it then fill the buffer again with Call Response.Write("yourstring").

The reason I can't see a need for this is because you could get the same effect by simply assigning your string to a variable building it up (manipulating it with Replace() if you want to) then Call Response.Write(yourstringvariable) to output it.

Dim myfunc

myfunc = "someFunctionName("
'someMethod should return a string
myfunc = myfunc & someMethod(param1, param2)
myfunc = myfunc & ");"

Call Response.Write(myfunc)

Is it possible to change the classic ASP response once you've written to it?

1 Answers1