Display content from database on HTML page via Ajax and PHP

$("#update").click(function(e) {
      e.preventDefault();
      var ttle = $("#title").val(); 
      var text = $("#prjdesc").val(); 
     var dataString = 'param='+text+'&param1='+ttle;
      $.ajax({
        type:'POST',
        data:dataString,
        url:'insert.php',
        success:function(id) {
          window.location ="path.php?id="+id; // redirects
        }
      });
    });

mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");

 $name = $_POST['param'];
 $title = $_POST['param1'];
 $sql="INSERT INTO $tbl_name (title, content) VALUES ('$name','$title')";

 if(mysql_query($sql)) {
  echo mysql_insert_id(); // this will get your last inserted ID
  } else {
  echo "Cannot Insert";
  }

<div dangerouslySetInnerHTML={{__html: "<p>your html content</p>"}}></div>