常用倒计时，用在做题的时候，用来记录做题的时间。
<script type="text/javascript"> var intDiff = parseInt(60);//倒计时总秒数量 function timer(intDiff){ window.setInterval(function(){ var day=0, hour=0, minute=0, second=0;//时间默认值 if(intDiff > 0){ day = Math.floor(intDiff / (60 * 60 * 24)); hour = Math.floor(intDiff / (60 * 60)) - (day * 24); minute = Math.floor(intDiff / 60) - (day * 24 * 60) - (hour * 60); second = Math.floor(intDiff) - (day * 24 * 60 * 60) - (hour * 60 * 60) - (minute * 60); } if (minute <= 9) minute = '0' + minute; if (second <= 9) second = '0' + second; $('#day_show').html(day+"天"); $('#hour_show').html('<s id="h"></s>'+hour+'时'); $('#minute_show').html('<s></s>'+minute+'分'); $('#second_show').html('<s></s>'+second+'秒'); intDiff--; }, 1000); } $(function(){ timer(intDiff); }); </script>
only 只有s秒倒计时的时候
<script> var timerindex; function handleTimeDown(intDiff) { //倒计时 intDiff--; clearInterval(timerindex); // 清除定时器 timerindex = setInterval(function () { console.log(intDiff); if (intDiff >= 0) { if (intDiff <= 9) { intDiff = '0' + intDiff; } $('#ai-question time').text(intDiff); intDiff--; } else { clearInterval(timerindex); // 清除定时器 setTimeout(function () { //弹窗阶段的时候需要注意 console.log('3s后'); $('.ai-question .question-btn').trigger('click'); }, 3000) return false; } }, 1000); } $('.js_do').off('click').on('click',function(){ handleTimeDown(90); }) </script>
