Get field types & field name from list

getFieldColumns.js

function GetFieldsForList(Site, ListName)
{
    var ctx = new SP.ClientContext(Site);
    var list = ctx.get_web().get_lists().getByTitle(ListName);
    this.fields = list.get_fields();
    ctx.load(fields, 'Include(Title,InternalName,FieldTypeKind)');
    ctx.executeQueryAsync(Function.createDelegate(this, this.Success), Function.createDelegate(this, this.Failure));
}

function Success()
{
    var _fields = '';
    var lEnum = fields.getEnumerator();
    while(lEnum.moveNext())
    {
        _fields += lEnum.get_current().get_title() + " - " + lEnum.get_current().get_internalName() + " - "+lEnum.get_current().get_fieldTypeKind()+";";
    }
    console.log(_fields);
}

function Failure(sender, args)
{
    console.log("Failed" + args.get_message());
}
GetFieldsForList('https://mydomain.sharepoint.com/sites/mysite/','profile')