JS 转换Excel日期数字 转回日期格式

日期数字 转回日期格式"/>

JS 转换Excel日期数字 转回日期格式

//excel日期格式转换 numb为数字，format为拼接符“-”function formatDate(numb, format) {if (numb != undefined) {let time = new Date((numb - 1) * 24 * 3600000 + 1)time.setYear(time.getFullYear() - 70)let year = time.getFullYear() + ''let month = time.getMonth() + 1 + ''let date = time.getDate() + ''if (format && format.length === 1) {return year + format + month + format + date}return year + (month < 10 ? '0' + month : month) + (date < 10 ? '0' + date : date)} else {return undefined;}}