原生ajax / $ajax

                var parme = {
                    username: username.value,
                    mobile: phone.value,
                    sex: sex,
                    city: '杭州'
                }

                // 源生
                var xhr = new XMLHttpRequest();
                xhr.open('POST', '/');
                // xhr.setRequestHeader("token",token)          //请求头携带参数（token）
                // xhr.setRequestHeader("Accept",'application/json, text/javascript, */*')    // 修改请求头Accept属性
                xhr.send(JSON.stringify(parme));
                xhr.onreadystatechange = function() {
                    if (xhr.readyState === 4) {
                        console.log('success', xhr.responseText);
                    } else {
                        console.log('error', xhr.responseText);
                    }
                }

                //jq
                $.ajax({
                    type: "POST",
                    url: "",
                    data: parme,
                    dataType: "json",
                    success: function(data){
                        $('#success').animate({
                            top: '0px'
                        }, 500)
                        setTimeout(function() {
                            $('#success').animate({
                                top: '-40px'
                            }, 500)
                        }, 3000)
                    }
                });