面试题之(js实现当年剩余时间倒计时程序)
js实现当年剩余时间倒计时程序,请看代码:
<script> function counter() { var date = new Date(); var year = date.getFullYear(); var date2 = new Date(year, 12, 31, 23, 59, 59); /*转换成秒*/ var time = (date2 - date) / 1000; var day = Math.floor(time / (24 * 60 * 60)) var hour = Math.floor(time % (24 * 60 * 60) / (60 * 60)) var minute = Math.floor(time % (24 * 60 * 60) % (60 * 60) / 60); var second = Math.floor(time % (24 * 60 * 60) % (60 * 60) % 60); var str = year + "年还剩" + day + "天" + hour + "时" + minute + "分" + second + "秒"; console.log(str); } window.setInterval("counter()", 1000); </script>
打印出来的效果图如下:
一个简易的当前年份剩余时间倒计时小程序就用JS实现了。