var year = (new Date()).getFullYear();
var times = [{ value: year + '年', code: year }, { value: (year + 1) + '年', code: year + 1 }];

let timePicker = function (_target) {
    new Picker({
        target: _target,
        data: times,
        autoFill: false,
        confirm: function (value, result) {
            var str = [];
            for (var i = 0, len = result.length; i < len; i++) {
                str.push(result[i].code);
            }
            this.target.value = str.slice(0, 3).join('-') + ' ' + str.slice(-2).join(':');
            //document.getElementById('value').innerText = value;
            //document.getElementById('result').innerText = JSON.stringify(result)
        },
        select: function (scrollIndex, result) {
            if (scrollIndex == 0) {//选择了年份
                this.setScroll(scrollIndex + 1, getMonth(result))
            } else if (scrollIndex == 1) {//选择了月份
                this.setScroll(scrollIndex + 1, getDay(result))
            } else if (scrollIndex == 2) {//选择了日
                this.setScroll(scrollIndex + 1, getHours(result));
            } else if (scrollIndex == 3) {//选择了时
                this.setScroll(scrollIndex + 1, getMinutes(result));
            }
        },
    });
}

function getMonth(result) {
    var arr = [], now = new Date();
    var start = result[0].code == now.getFullYear() ? now.getMonth() + 1 : 1;
    for (var i = start; i <= 12; i++) {
        arr.push({ value: i + '月', code: i });
    }
    return arr;
}
function getDay(result) {
    var year = result[0].code, month = result[1].code;
    var now = new Date();
    var start = year == now.getFullYear() && month == now.getMonth() + 1 ? now.getDate() : 1;
    var key = [1, 3, 5, 7, 8, 10, 12].indexOf(month) != -1 ? 31 : ([4, 6, 9, 11].indexOf(month) != -1 ? 30 : (year % 400 == 0 || year % 100 != 0 && year % 4 == 0) ? 29 : 28);
    var arr = [];
    for (var i = start; i <= key; i++) {
        arr.push({ value: i + '日', code: i });
    }
    return arr;
}

function getHours(result) {
    var arr = [], now = new Date();
    var start = result[0].code == now.getFullYear() && result[1].code == now.getMonth() + 1 && now.getDate() == result[2].code ? now.getHours() : 1;
    for (var i = start; i < 24; i++) {
        var value = ('00' + i).slice(-2)
        arr.push({ value: value + '时', code: value })
    }
    return arr;
}

function getMinutes(result) {
    var arr = [], now = new Date();
    var start = result[0].code == now.getFullYear() && result[1].code == now.getMonth() + 1 && now.getDate() == result[2].code && now.getHours() == +result[3].code ? now.getMinutes() : 1;
    for (var i = start; i < 60; i++) {
        var value = ('00' + i).slice(-2);
        arr.push({ value: value + '分', code: value })
    }
    return arr;
}