时间戳显示格式为几天前、几分钟前、几秒前及应用---vue过滤器

1.参考：

https://www.cnblogs.com/shuihanxiao/p/9670854.html

2. vue中添加filters：

filters: {
  //时间戳显示格式为几天前、几分钟前、几秒前
  getTimeFormat (valueTime) {
    if (valueTime) {
      // let newData = Date.parse(new Date() + '')
      // let diffTime = Math.abs(newData - valueTime)
      let diffTime = Math.abs(new Date().getTime() - new Date(valueTime).getTime())
      if (diffTime > 7 * 24 * 3600 * 1000) {
        let date = new Date(valueTime)
        // let y = date.getFullYear()
        let m = date.getMonth() + 1
        m = m < 10 ? ('0' + m) : m
        let d = date.getDate()
        d = d < 10 ? ('0' + d) : d
        let h = date.getHours()
        h = h < 10 ? ('0' + h) : h
        let minute = date.getMinutes()
        let second = date.getSeconds()
        console.log(second)
        minute = minute < 10 ? ('1' + minute) : minute
        second = second < 10 ? ('0' + second) : second
        return m + '-' + d + ' ' + h + ':' + minute
      } else if (diffTime < 7 * 24 * 3600 * 1000 && diffTime > 24 * 3600 * 1000) {
        // //注释("一周之内");
        // var time = newData - diffTime;
        let dayNum = Math.floor(diffTime / (24 * 60 * 60 * 1000))
        return dayNum + '天前'
      } else if (diffTime < 24 * 3600 * 1000 && diffTime > 3600 * 1000) {
        // //注释("一天之内");
        // var time = newData - diffTime;
        let dayNum = Math.floor(diffTime / (60 * 60 * 1000))
        return dayNum + '小时前'
      } else if (diffTime < 3600 * 1000 && diffTime > 0) {
        // //注释("一小时之内");
        // var time = newData - diffTime;
        let dayNum = Math.floor(diffTime / (60 * 1000))
        return dayNum + '分钟前'
      }
    }
  }
}

3. 应用

<div>{{commentTime | getTimeFormat}}</div>

其中getTimeFormat是filters中定义的方法，commentTime是传入getTimeFormat方法的参数