util.js
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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) {
if (month === 3 || month === 5 || month === 8 || month === 10) {
return 30;
}
if (month === 1) {
if (year % 4 === 0 && year % 100 !== 0 || year % 400 === 0) {
return 29;
} else {
return 28;
}
}
return 31;
};
export const getFirstDayOfMonth = function(date) {
const temp = new Date(date.getTime());
temp.setDate(1);
return temp.getDay();
};
export const prevMonth = function(src) {
const year = src.getFullYear();
const month = src.getMonth();
const date = src.getDate();
const newYear = month === 0 ? year - 1 : year;
const newMonth = month === 0 ? 11 : month - 1;
const newMonthDayCount = getDayCountOfMonth(newYear, newMonth);
if (newMonthDayCount < date) {
src.setDate(newMonthDayCount);
}
src.setMonth(newMonth);
src.setFullYear(newYear);
return new Date(src.getTime());
};
export const nextMonth = function(src) {
const year = src.getFullYear();
const month = src.getMonth();
const date = src.getDate();
const newYear = month === 11 ? year + 1 : year;
const newMonth = month === 11 ? 0 : month + 1;
const newMonthDayCount = getDayCountOfMonth(newYear, newMonth);
if (newMonthDayCount < date) {
src.setDate(newMonthDayCount);
}
src.setMonth(newMonth);
src.setFullYear(newYear);
return new Date(src.getTime());
};
export const initTimeDate = function (time) {
const date = new Date();
date.setHours(0);
date.setMinutes(0);
date.setSeconds(0);
return date;
};