以這節(jié)的這個思路應該怎么寫時間倒數(shù)呢？初始值為10：00：00
<div?class="daoshu"> ????<a?href="">10:00:00</a> </div>
<script> ????var?date?=?new?Date(); </script>
慕慕0116261
2019-07-25
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2019-08-05
<h1?id="text"></h1> <script> ????var?toDate; ????toDate?=?new?Date(); ????toDate.setDate(toDate.getDate()+1); ????toDate.setHours(10); ????//?獲取明天上午10點時間戳 ????toDate?=?toDate.getTime(); ????var?t?=?document.getElementById('text'); ????setInterval(function(){ ????????//?獲取現(xiàn)在時間戳 ????????now?=?new?Date().getTime(); ????????t.innerText?=?"距離明天上午10點，還有"?+?Math.ceil((toDate?-?now)?/?1000)?+?"秒"; ????},?1000); </script>如果想要時分秒形式，自己把秒換算一下就行
2019-09-09
????var?attime; ????function?clock()?{ ????????var?time?=?new?Date(); ???????? ????????var?hour?=?time.getHours(); ????????var?minute?=?time.getMinutes(); ????????var?second?=?time.getSeconds(); ???????? ????????hour?=?hour?>?9???hour?:?"0"?+?hour; ????????minute?=?minute?>?9???minute?:?"0"?+?minute; ????????second?=?second?>?9???second?:?"0"?+?second; ???????? ????????attime=?hour?+?":"?+?minute?+?":"?+?second; ????????document.getElementById("clock").value?=?attime; ????}2019-07-26
我覺得可以把這個字符先轉(zhuǎn)成時間秒，然后遞減該數(shù)值，顯示字符的時候把數(shù)字再轉(zhuǎn)成時分秒的格式，其他應該還有更加簡單高效的辦法
??<script> ??????????var?hours?=?10;??????? ???????????var?minutes?=?00;???????? ???????????var?seconds?=?00;???????? ???????????var?total?=?hours?*?3600?+?minutes?*?60?+?seconds;???????? ???????????function?countdown()?{???????????? ???????????????var?a?=?document.getElementById("countdown");???????????? ???????????????timestr?=?lessTen(Math.floor(total?/?3600))?+?":"?+?lessTen(Math.floor(total?/?60)?%?60)?+?":"?+?lessTen(total?%?60); ???????????????a.innerHTML?=?timestr;????????????total--;????????}???????????????? ???????????function?lessTen(n){???????????? ???????????????if?(n<10?&&?n?>=0){???????????????? ???????????????return??"0"?+?n;???????????? ???????????}???????????? ???????????return?n;???????? ???????????}???????? ???????????setInterval(countdown,?1000);??? ????????????</script>