<script>
var startTime = "2017-04-04";
var calculationTime = function(startTime) {
    var s1 = new Date(startTime.replace(/-/g, "/")),
    s2 = new Date(),
    runTime = parseInt((s2.getTime() - s1.getTime()) / 1000);
    var year = Math.floor(runTime / 86400 / 365);
    runTime = runTime % (86400 * 365);
    var month = Math.floor(runTime / 86400 / 30);
    runTime = runTime % (86400 * 30);
    var day = Math.floor(runTime / 86400);
    runTime = runTime % 86400;
    var hour = Math.floor(runTime / 3600);
    runTime = runTime % 3600;
    var minute = Math.floor(runTime / 60);
    runTime = runTime % 60;
    var second = runTime;
    document.querySelector(".SiteRunningTime > .year").innerText = year;
    document.querySelector(".SiteRunningTime > .month").innerText = month;
    document.querySelector(".SiteRunningTime > .day").innerText = day;
    document.querySelector(".SiteRunningTime > .hour").innerText = hour;
    document.querySelector(".SiteRunningTime > .minute").innerText = minute;
    document.querySelector(".SiteRunningTime > .second").innerText = second
};
setInterval("calculationTime(startTime)", 1000);
</script>
<span class="SiteRunningTime">该站点运行了<label class="year">0</label>年<label class="month">0</label>月<label class="day">0</label>日<label class="hour">0</label>时<label class="minute">0</label>分<label class="second">0</label>秒</span>