Get current user id using JavaScript in Dynamics 365 CE CRM script

To get current user id you can use the following script: This will return GUID with curly braces.

var userSettings = Xrm.Utility.getGlobalContext().userSettings;

var currentuserid = userSettings.userId;
var username = userSettings.userName;

var securityrolesofcurrentuser = userSettings.securityRoles;

To get current user name you can use the following script:

var userSettings = Xrm.Utility.getGlobalContext().userSettings;
var username = userSettings.userName;

To get current user roles you can use the following script: Returns an array of strings that represent the GUID values of each of the security role or teams that the user is associated with.

var userSettings = Xrm.Utility.getGlobalContext().userSettings;

var securityrolesofcurrentuser = userSettings.securityRoles;