ajaxJson（常用）

function ajaxJson(method, url, data, callback) {
    var options = {
        type: method,
        url: url,
        dataType: 'JSON',
        traditional: true,
        contentType: "application/json; charset=utf-8"
    };
    if (typeof data === 'function') { // No data offered
        callback = data;
    } else { // Add data
        options.data = data;
    }
    options.success = function (msg) {
        return callback(null, msg);
    };
    options.error = function (err) {
        return callback(err);
    };
    $.ajax(options);
}

ajaxJson('POST', url, JSON.stringify(param), function(err, result){
　　//result or rsp

　　// if(SUCCESS){

　　//.......　　

　　}else{

　　//.......

　　}
});

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//DateTables (ajax) 非同步獲取數據填充到表格顯示(ajax)

        ajax: function (data, callback, settings) {
            //封裝請求參數
            var param = {
                "page": {

                }
            };
            $.ajax({
                type: "POST",
                url: url,
                data: JSON.stringify(param),
                dataType: "json",
                contentType: "application/json; charset=utf-8",
                success: function (result) {
                    //......
                    callback(returnData);
                }
            });
        }

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    var options = {
        url: url,
        type: 'POST',
        data: data,
        processData: false,
        contentType: false,
        success: function (rsp) {
            if(rsp.code==200){
                  ....  
            }else{
                  ....
            }
        },
        error: function (e) {
            //......
        }
    };
    $.ajax(options);