获取从本月起往前5个月的年月

function initDefaultDate() {
      var result = [];
      for (var i = 0; i > -6; i--) {
        var curr_date = new Date();
        curr_date.setMonth(curr_date.getMonth() + i);
        var strYear = curr_date.getFullYear();
        var strMonth = curr_date.getMonth() + 1;
        var datastr = strYear + ‘-‘ + formatNumber(strMonth)
        result.push(datastr)
      }
      return result;
}

function formatNumber(value) {
      return (value < 10 ? ‘0‘ : ‘‘) + value;
}
document.write(initDefaultDate());