With Sdk.Soap.js you can be much more productive when you need to use the SOAP endpoint. Please look at the following samples:
Contains the core library and supporting libraries to call 202 messages.
Sdk.Soap.js Entity Class Generator
Sdk.Soap.js Action Message Generator
Contains a sample to generate support libraries for custom actions in your organization. Actions are like custom messages you define using the workflow editor.
Contains a variety of samples showing the use of the Sdk.Soap.js library.