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import timeFormat from './timeFormat';
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/**
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* 时间戳转为多久之前
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* @param dateTime 时间戳、Date对象或null,默认当前时间
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* @param format 时间格式字符串或false,超出范围时返回指定格式,否则返回多久以前
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* @returns 格式化后的时间字符串
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*/
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function timeFrom(dateTime: number | string | Date | null = null, format: string | false = 'yyyy-mm-dd'): string {
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// 如果为null,则格式化当前时间
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if (!dateTime) dateTime = Number(new Date());
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// 如果dateTime长度为10或者13,则为秒和毫秒的时间戳,如果超过13位,则为其他的时间格式
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if (typeof dateTime === 'number' || typeof dateTime === 'string') {
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if (dateTime.toString().length == 10) dateTime = Number(dateTime) * 1000;
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}
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const timestamp = +new Date(Number(dateTime));
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const timer = (Number(new Date()) - timestamp) / 1000;
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// 如果小于5分钟,则返回"刚刚",其他以此类推
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let tips = '';
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switch (true) {
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case timer < 300:
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tips = '刚刚';
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break;
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case timer >= 300 && timer < 3600:
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tips = parseInt(String(timer / 60)) + '分钟前';
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break;
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case timer >= 3600 && timer < 86400:
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tips = parseInt(String(timer / 3600)) + '小时前';
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break;
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case timer >= 86400 && timer < 2592000:
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tips = parseInt(String(timer / 86400)) + '天前';
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break;
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default:
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// 如果format为false,则无论什么时间戳,都显示xx之前
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if (format === false) {
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if (timer >= 2592000 && timer < 365 * 86400) {
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tips = parseInt(String(timer / (86400 * 30))) + '个月前';
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} else {
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tips = parseInt(String(timer / (86400 * 365))) + '年前';
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}
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} else {
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tips = timeFormat(timestamp, format as string);
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}
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}
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return tips;
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}
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export default timeFrom;
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