$.ajax({
        type:"POST",
        url:"/aa/bb",
        data:{}, 
        success:function(data){
            
        },
        error:function(jqXHR){
            
        }
});

------------------------------------------

 $.ajax({
                    type: "POST",
                    url: "/Tea/AddMain",
                    data: $('form[name="formPaper"]').serialize(),
                    success: function (data) {

                    },
                    error: function (jqXHR) {

                    }
                });

-----------------------------------------------

$.ajax({
    type: 'post',
    data: {},
    contentType: 'application/json',
    url: '/Home/Submit',
    beforeSend: function () {
        $('#submit').attr({ disabled: "disabled" });
    },
    success: function (data) {
        //操作后台返回的data
    },
    complete: function () {
        $('#submit').removeAttr("disabled");
    },
    error: function (data) {
        console.info("error: " + data.responseText);
    }
});

-----------------------------------------

var arr2 = [['a', 'aa', 'aaa'], ['b', 'bb', 'bbb'], ['c', 'cc', 'ccc']]      
　　
$.each(arr2, function(i, item){      
alert(i);   
alert(item);  
});  
//end each

这是我常用的写法，本人菜鸟，写的不对请见谅。