注意，a标签没有disabled属性，所以建议使用button

var count = 0 send_count_down: function () {            var code = document.getElementById('sendCode')            if (count == 0) {                code.style.color = '#FEC901';                code.removeAttribute('disabled')                code.innerHTML = "获取验证码";                count = 60;                return;            } else {                code.style.color = '#A9A9A9'                code.setAttribute('disabled', true)                code.innerHTML = "重新发送(" + count + ")";                count--;            }            setTimeout(function () {                login.send_count_down()            }, 1000)        },