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39 lines
1.3 KiB
39 lines
1.3 KiB
3 years ago
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import isValidDate from './isValidDate';
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import parseDate from './parseDate';
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/**
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* @description: 时间格式化
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* @param {Date|Number|String} date
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* @param {String} fmt = 'YYYY-MM-DD HH:mm'
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* @return {String}
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* @example formatDate(new Date(), fmt = 'YYYY-MM-DD HH:mm')
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*/
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export default function formatDate(date, fmt = 'YYYY-MM-DD HH:mm') {
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if (!isValidDate((date = parseDate(date)))) return '';
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const o = {
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'M+': date.getMonth() + 1, // 月份
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'(D|d)+': date.getDate(), // 日
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'h+': date.getHours() % 12 == 0 ? 12 : date.getHours() % 12, // 小时
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'H+': date.getHours(), // 小时
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'm+': date.getMinutes(), // 分
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's+': date.getSeconds(), // 秒
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'q+': Math.floor((date.getMonth() + 3) / 3), // 季度
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'S+': date.getMilliseconds(), // 毫秒
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};
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if (/(Y+)/i.test(fmt)) {
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fmt = fmt.replace(RegExp.$1, (date.getFullYear() + '').substr(4 - RegExp.$1.length));
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}
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if (/(E+)/.test(fmt)) {
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fmt = fmt.replace(RegExp.$1, ['日', '一', '二', '三', '四', '五', '六'][date.getDay()]);
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}
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Object.keys(o).forEach(k => {
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if (new RegExp('(' + k + ')').test(fmt)) {
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fmt = fmt.replace(
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RegExp.$1,
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RegExp.$1.length === 1 ? o[k] : ('0'.repeat(RegExp.$1.length) + o[k]).substr(('' + o[k]).length),
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);
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}
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});
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return fmt;
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}
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