const monthVal = [
    {
      value: 1,
      label: '1月'
    },
    {
      value: 2,
      label: '2月'
    },
    {
      value: 3,
      label: '3月'
    },
    {
      value: 4,
      label: '4月'
    },
    {
      value: 5,
      label: '5月'
    },
    {
      value: 6,
      label: '6月'
    },
    {
      value: 7,
      label: '7月'
    },
    {
      value: 8,
      label: '8月'
    },
    {
      value: 9,
      label: '9月'
    },
    {
      value: 10,
      label: '10月'
    },
    {
      value: 11,
      label: '11月'
    },
    {
      value: 12,
      label: '12月'
    }
]
var date = new Date();
var year = date.getFullYear();
var month = date.getMonth() + 1;

function initData() {
    let years = [];
    for (var i = 2020; i<=2050; i++) {
        let item = {};
        item.value = i;
        item.label = i + "年";
        item.children = monthVal;
        years.push(item);
    }
    return years;
}