Find current login user in sharepoint users group using REST and render output as HTML

$(document).ready(function ()  
{ 
 getCurrentUser(); 
 
}); 
 
function getCurrentUser()   
{  
 $.ajax
 ({  
  url: url+"/_api/web/CurrentUser",  
  method: "GET",  
  headers: { "Accept": "application/json; odata=verbose" },  
  success: function (data)  
  {  
   getCurrentUserGroupColl(data.d.Id);  
  },  
  error: function (data)   
  {  
   failure(data);  
  }  
 });  
}
  
function getCurrentUserGroupColl(UserID)   
{  
 $.ajax  
  ({  
   url: url+"/_api/web/GetUserById(" + UserID + ")/Groups",  
   method: "GET",  
   headers: { "Accept": "application/json; odata=verbose" },  
   success: function (data) 
   {  
   /* get all group's title of current user. */  
   var results = data.d.results; 
   var InnrHtmlgrp = "<br />
<ul>";  
   
   for (var i = 0; i &lt; results.length; i++)   
   {  
    if(results[i].Title == 'owner')
    {
    // Do the changes 
    //InnrHtmlgrp += "
<li>" + results[i].Title + "</li>
";  
    $("#manager").append(managerstring);  
    
    }
   }  
  
    
   }  
  });  
}