【js】时间和时间戳转换、日期格式化

1、时间戳转换日期方法 （格式：2023-08-17）

function timestampToDate(date) {var date = new Date(date);var YY = date.getFullYear() + '-';var MM = (date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : date.getMonth() + 1) + '-';var DD = (date.getDate() < 10 ? '0' + (date.getDate()) : date.getDate());return YY + MM + DD;
}

2、日期字符串转时间戳

function dateToTimestamp(date) {if (date.length > 0) {date = date.substring(0, 19);date = date.replace(/-/g, '/'); //必须把日期'-'转为'/'var timestamp = new Date(date).getTime();return timestamp;} else {return null;}
}

3、时间戳转换日期+时间方法 date:时间戳数字（格式：2023-08-17 14:11:01）

function timestampToDateTime(date) {var date = new Date(date);var YY = date.getFullYear() + '-';var MM = (date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : date.getMonth() + 1) + '-';var DD = (date.getDate() < 10 ? '0' + (date.getDate()) : date.getDate());var hh = (date.getHours() < 10 ? '0' + date.getHours() : date.getHours()) + ':';var mm = (date.getMinutes() < 10 ? '0' + date.getMinutes() : date.getMinutes()) + ':';var ss = (date.getSeconds() < 10 ? '0' + date.getSeconds() : date.getSeconds());return YY + MM + DD + " " + hh + mm + ss;
}

4、 获取日期中文格式

function initDate(date) {var datetime = date.getFullYear() + "年" +((date.getMonth() + 1) > 10 ? (date.getMonth() + 1) : "0" + (date.getMonth() + 1)) + "月" +(date.getDate() < 10 ? "0" + date.getDate() : date.getDate()) + "日 " +(date.getHours() < 10 ? '0' + date.getHours() : date.getHours()) + "时" +(date.getMinutes() < 10 ? '0' + date.getMinutes() : date.getMinutes()) + "分" +(date.getSeconds() < 10 ? '0' + date.getSeconds() : date.getSeconds()) + "秒";return datetime;
}