ajax 发送 json 数组

 

                    $.ajax({
                        url:url,
                        type:"POST",
                        
                        data:JSON.stringify(data),
                        dataType:"json",
                        contentType:"application/json",

                        
                        success:function(res){

                        }
                    })

        var xhr = new XMLHttpRequest();

        

        xhr.open("POST","www.baidu.com");

        xhr.setRequestHeader("Content-Type", "application/json")

        xhr.send(JSON.stringify({a:1,data:[1,2,3]}));