js發送短信驗證碼倒計時效果

 <input type="number"><button class="send">發送</button>
 var send = document.querySelector('.send')

        var timer6 = null
        send.addEventListener('click', function () {
            this.disabled = true
            var time = 3
            timer6 = setInterval(function () {
                console.log(time)
                if (time == 0) {



                    clearInterval(timer6)
                    send.disabled = false
                    send.innerHTML = '發送'

                } else {
                    send.innerHTML = '還剩下' + time + '秒'
                    time--
                }

            }, 1000)
        })