Format of AJAX with POST type using jQuery

ajax-post.js

$.post(url, { comment: text }, function(data) {
        alert(data);    
});

//or

$.ajax(url, { data: { title: text1, comment: text2 },
    type: "POST",
    beforeSend: function() {
        alert("before send");
    },
    error: function() {
        alert("error"); 
    },
    success: function(data) {
        alert(data);    
    }
});