chenhaodong / mew-iview

  import dateUtil from '../../utils/date';
  

  export const toDate = function(date) {
      date = new Date(date);
      if (isNaN(date.getTime())) return null;
      return date;
  };
  
  export const formatDate = function(date, format) {
      date = toDate(date);
      if (!date) return '';
      return dateUtil.format(date, format || 'yyyy-MM-dd');
  };
  
  export const parseDate = function(string, format) {
      return dateUtil.parse(string, format || 'yyyy-MM-dd');
  };
  
  export const getDayCountOfMonth = function(year, month) {

      return new Date(year, month + 1, 0).getDate();

  };
  
  export const getFirstDayOfMonth = function(date) {
      const temp = new Date(date.getTime());
      temp.setDate(1);
      return temp.getDay();
  };
  

  export const siblingMonth = function(src, diff) {
      const temp = new Date(src); // lets copy it so we don't change the original
      const newMonth = temp.getMonth() + diff;
      const newMonthDayCount = getDayCountOfMonth(temp.getFullYear(), newMonth);
      if (newMonthDayCount < temp.getDate()) {
          temp.setDate(newMonthDayCount);

      }

      temp.setMonth(newMonth);

      return temp;
  };

  export const prevMonth = function(src) {
      return siblingMonth(src, -1);

  };
  
  export const nextMonth = function(src) {

      return siblingMonth(src, 1);

  };
  

  export const initTimeDate = function() {

      const date = new Date();
      date.setHours(0);
      date.setMinutes(0);
      date.setSeconds(0);
      return date;

  };