获取当前用户信息

SP.SOD.executeOrDelayUntilScriptLoaded(showUserInfo,"sp.js");

function showUserInfo(){
    var clientContext = new SP.ClientContext();
    var user = clientContext.get_web().get_currentUser();
    clientContext.load(user);
    clientContext.executeQueryAsync(function(){
            var details = "ID: "+user.get_id()+"\n"+
                "Title: "+user.get_title()+"\n"+
                "Login: "+user.get_loginName()+"\n"+
                "Email: "+user.get_email();
            alert(details);
        },function(sender,args){alert(args.get_message());})
}