Javascript时间戳相对时间 [英] Javascript timestamp to relative time

问题描述

我正在寻找一个不错的JS代码片段，以将时间戳（例如，来自Twitter API）转换为一个用户友好的相对时间（例如2秒前，一周前等）。

I'm looking for a nice JS snippet to convert a timestamp (e.g. from Twitter API) to a nice user friendly relative time (e.g. 2 seconds ago, one week ago etc).

有人愿意分享一些他们喜欢的方法（最好不使用插件）吗？

Anyone care to share some of their favourite methods (preferably not using plugins)?

推荐答案

如果您不太担心准确性，那么这很容易。普通方法有什么问题？

Well it's pretty easy if you aren't overly concerned with accuracy. What wrong with the trivial method?

function timeDifference(current, previous) {

    var msPerMinute = 60 * 1000;
    var msPerHour = msPerMinute * 60;
    var msPerDay = msPerHour * 24;
    var msPerMonth = msPerDay * 30;
    var msPerYear = msPerDay * 365;

    var elapsed = current - previous;

    if (elapsed < msPerMinute) {
         return Math.round(elapsed/1000) + ' seconds ago';   
    }

    else if (elapsed < msPerHour) {
         return Math.round(elapsed/msPerMinute) + ' minutes ago';   
    }

    else if (elapsed < msPerDay ) {
         return Math.round(elapsed/msPerHour ) + ' hours ago';   
    }

    else if (elapsed < msPerMonth) {
        return 'approximately ' + Math.round(elapsed/msPerDay) + ' days ago';   
    }

    else if (elapsed < msPerYear) {
        return 'approximately ' + Math.round(elapsed/msPerMonth) + ' months ago';   
    }

    else {
        return 'approximately ' + Math.round(elapsed/msPerYear ) + ' years ago';   
    }
}

工作示例此处。

您可能希望对其进行调整以更好地处理奇异值（例如， 1天而不是 1天）让您感到困扰。

You might want to tweak it to handle the singular values better (e.g. 1 day instead of 1 days) if that bothers you.

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