背景

在crm中，table展示时间，把时间戳格式化成需要的格式是很常见的功能。

实现

时间戳格式转化为 yyyy-mm-dd hh:mm:ss

export function dataTime(timeStamp) {
  const date = new Date(timeStamp);
  const y = date.getFullYear();
  let minute = date.getMinutes();
  let second = date.getSeconds();
  let m = date.getMonth() + 1;
  let d = date.getDate();
  let h = date.getHours();
  m = m < 10 ? ('0' + m) : m;
  d = d < 10 ? ('0' + d) : d;
  h = h < 10 ? ('0' + h) : h;
  minute = minute < 10 ? ('0' + minute) : minute;
  second = second < 10 ? ('0' + second) : second;
  return y + '-' + m + '-' + d + ' ' + h + ':' + minute + ':' + second;
}

// 时间戳格式转化为 yyyy-mm-dd hh:mm:ss 星期几

export function parseTime(time, cFormat) {
  if (arguments.length === 0) {
    return null;
  }
  const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}';
  let date;
  if (typeof time === 'object') {
    date = time;
  } else {
    if (('' + time).length === 10) time = parseInt(time) * 1000;
    date = new Date(time);
  }
  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay()
  };
  const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
    let value = formatObj[key];
    // Note: getDay() returns 0 on Sunday
    if (key === 'a') { return ['日', '一', '二', '三', '四', '五', '六'][value ]; }
    if (result.length > 0 && value < 10) {
      value = '0' + value;
    }
    return value || 0;
  });
  return time_str;
}