ajax success error always code example

Example 1: ajax error

$.ajax({
    type: "post", url: "/SomeController/SomeAction",
    success: function (data, text) {
        //...
    },
    error: function (request, status, error) {
        alert(request.responseText);
    }
});

Example 2: jquery ajax on fail

fail: function(xhr, textStatus, errorThrown){
	alert('request failed');
}