Authentication can get in the way of things. Basically, if the user can do the task through the UI, they should be able to do it via the Web Services.
As noted in the docs, SPGetCurrentUser loads the _layouts/userdisp.aspx page and grabs the values from there. Depending on what you need, there are other methods in 2010 and 2013, as there are some existing JavaScript variables.
M.
As noted in the docs, SPGetCurrentUser loads the _layouts/userdisp.aspx page and grabs the values from there. Depending on what you need, there are other methods in 2010 and 2013, as there are some existing JavaScript variables.
M.