JS、jquery实现几分钟前、几小时前、几天前等时间差显示效果的代码实例?

<!DOCTYPE html>
<html>
<head>
    <script>
        function diaplayTime(data) {

            var str = data;
            //将字符串转换成时间格式
            var timePublish = new Date(str);
            var timeNow = new Date();
            var minute = 1000 * 60;
            var hour = minute * 60;
            var day = hour * 24;
            var month = day * 30;
            var diffValue = timeNow - timePublish;
            var diffMonth = diffValue / month;
            var diffWeek = diffValue / (7 * day);
            var diffDay = diffValue / day;
            var diffHour = diffValue / hour;
            var diffMinute = diffValue / minute;

            if (diffValue < 0) {
                alert("错误时间");
            }
            else if (diffMonth > 3) {
                result = timePublish.getFullYear()+"-";
                result += timePublish.getMonth() + "-";
                result += timePublish.getDate();
                alert(result);
            }
            else if (diffMonth > 1) {
                result = parseInt(diffMonth) + "月前";
            }
            else if (diffWeek > 1) {
                result = parseInt(diffWeek) + "周前";
            }
            else if (diffDay > 1) {
                result = parseInt(diffDay) + "天前";
            }
            else if (diffHour > 1) {
                result = parseInt(diffHour) + "小时前";
            }
            else if (diffMinute > 1) {
                result = parseInt(diffMinute) + "分钟前";
            }
            else {
                result = "刚刚发表";
            }
            return result;
        }
    </script>
</head>
<body>
    <button onclick="diaplayTime()">显示时间</button>
</body>
</html>