sf.html
<!DOCTYPE html>
<html><head><meta charset="UTF-8"><title>时间</title><script>function showTime(){var time=new Date();var date=time.getDate();var year=time.getFullYear();var month=time.getMonth()+1;var hour=time.getHours();var minute=time.getMinutes();var second=time.getSeconds();var nianyueri=year+"年"+" "+month+"月"+" "+date+"日";var mytime=hour+":"+minute+":"+second;document.getElementById("nianyueri").innerHTML=nianyueri;document.getElementById("sj").innerHTML=mytime;setTimeout("showTime()",1000);}</script></head><body><div><div id="nianyueri"></div><div id="sj">20:57</div><script>showTime();</script></div></body>
</html>
运行后
单独显示年份
year.html
<!DOCTYPE html>
<html><head><meta charset="UTF-8"><title>年</title><script>function showTime(){var time=new Date();var year=time.getFullYear();var showyear=year+'年';document.getElementById("Year").innerHTML=showyear;}</script></head><body><div id="Year"></div><script>showTime()</script></body>
</html>
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