Error.argumentUndefined Function
Creates an Error object that represents the Sys.ArgumentUndefinedException exception.
var err = Error.argumentUndefined(paramName, message);
The argumentUndefined function lets you communicate that an exception has occurred when an argument provided to a method is undefined. Use the argumentUndefined function to create an Error object that represents a Sys.ArgumentUndefinedException exception. The paramName argument enables you to specify the name of the parameter whose value was undefined and that caused the exception. The message argument enables you to specify an error message.
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