Edit in JSFiddle JavaScript HTML CSS Result h1 { font-family: "微软雅黑"; font-size: 40px; margin: 20px 0; border-bottom: solid 1px #ccc; padding-bottom: 20px; letter-spacing: 2px; } .time-item strong { background: #C71C60; color: #fff; line-height: 49px; font-size: 36px; font-family: Arial; padding: 0 10px; margin-right: 10px; border-radius: 5px; box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.2); } #day_show { float: left; line-height: 49px; color: #c71c60; font-size: 32px; margin: 0 10px; font-family: Arial, Helvetica, sans-serif; } .item-title .unit { background: none; line-height: 49px; font-size: 24px; padding: 0 10px; float: left; } var intDiff = parseInt(86400); //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); }); <h1>网页上的倒计时</h1> <div class="time-item"> <span id="day_show">0天</span> <strong id="hour_show">0时</strong> <strong id="minute_show">0分</strong> <strong id="second_show">0秒</strong> </div> ---------------------------------------排序 function test() { var numbers = [12, 23, 10, 56, 7, 88, 92, 49]; numbers = numbers.sort(function (a, b) { return a - b; }) var val; for (var i = 0; i < numbers.length; i++) { val += numbers[i] + '<br/>'; } $('#show8').html(val); } <div> <input type="button" value="提交" onclick="test()" /> <h3>数值数组排序前</h3> <div id="show7"></div> <h3>排序后</h3> <div id="show8"></div> </div>