getQueryParameter()

The j2eeLib.getQueryParameter() system function uses a specified key to retrieve a query parameter from request scope storage, usually a parameter passed with an AJAX request. If a value is not found with the specified key, the function returns a null value.

This function cannot be used to retrieve values put into the request with functions such as j2eeLib.getRequestAttr(); instead, j2eeLib.getQueryParameter() retrieves values put into the request through any of the following means:
The function accepts a key of $$ajaxmode to determine whether the request being currently processed by the servlet is an AJAX request or another type of request.
  j2eeLib.getQueryParameter(
    key STRING in)
  returns (value STRING?)
key
Any value that is assignment compatible with the STRING type. See Assignment compatibility in EGL.
value
A STRING.

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