window.onload = function () {
        //判断时间数字是否小于10并格式化
        function format(arr) {
            return arr < 10 ? ‘0‘ + arr : arr
        }

        var timeStr = ‘‘
        var endTime = ‘100000‘
        var timer = null
        timer = setInterval(function () {
            var now = new Date()
            timeStr = format(now.getHours()) + format(now.getMinutes()) + format(now.getSeconds())
            if (timeStr === endTime) {
                alert(‘点击抢月饼‘)
            } else {
                console.log(timeStr)
            }
        }, 1000)
    }