Validate People Picker and TextBox using Jquery

//TextBox
if($("#ctl00_m_g_1908d4f6_cfae_448c_ab52_87ffc22498be_ctl00_ctl05_ctl00_ctl00_ctl00_ctl04_ctl00_ctl00_TextField").val()=="")
        {
            alert('Please enter Title');
            return false;
        }
       
       
    //People Picker    if($("#ctl00_m_g_1908d4f6_cfae_448c_ab52_87ffc22498be_ctl00_ctl05_ctl05_ctl00_ctl00_ctl04_ctl00_ctl00_UserField_upLevelDiv").text()=="")
        {
            alert('Please enter Username');
            return false;
        }