Set Person or group filed with current user using javascript

<script src="/jquery-1.10.2.min.js" type="text/javascript"></script> 
<script src="/jquery.SPServices-2014.02.min.js" type="text/javascript"></script> 
<script type="text/javascript"> 
(function () {
    var ctx = {};
    ctx.Templates = {};
    ctx.Templates.Fields = {
        Field Display Name': {
            'NewForm': renderAssignedTo
        }
    };
    SPClientTemplates.TemplateManager.RegisterTemplateOverrides(ctx);
})();
function renderAssignedTo(ctx) {
     var currentUser = $().SPServices.SPGetCurrentUser({fieldNames: ["Title", "Name"]});   //get current user properties
     var currentUserEntry = createUserEntity(currentUser.Name,currentUser.Title);
     //Set user default value
     ctx.CurrentFieldValue = [];   //Note: it is assumed the user field is a multi-valued field (!)
     ctx.CurrentFieldValue.push(currentUserEntry); 
     return SPClientPeoplePickerCSRTemplate(ctx);
}
function createUserEntity(userLoginName,userDisplayName)
{
   return {
      Description: userLoginName,
      DisplayText: userDisplayName,
      EntityGroupName: "",
      EntityType: "",
      HierarchyIdentifier: null,
      IsResolved: true,
      Key: userLoginName,
      MultipleMatches: [],
      ProviderDisplayName: "",
      ProviderName: ""
   };
}
</script>