我一直在关注如何创建javascript倒计时器的教程。我想在<h1>
标签中显示每个标签,以便我可以用CSS设置它,但是到目前为止我所有的尝试都失败了,老实说我不知道如何去做。任何帮助表示赞赏
HTML
<span id="countdown"></span>
的Javascript
// set the date we're counting down to
var target_date = new Date("Aug 15, 2019").getTime();
// variables for time units
var days, hours, minutes, seconds;
// get tag element
var countdown = document.getElementById("countdown");
// update the tag with id "countdown" every 1 second
setInterval(function () {
// find the amount of "seconds" between now and target
var current_date = new Date().getTime();
var seconds_left = (target_date - current_date) / 1000;
// do some time calculations
days = parseInt(seconds_left / 86400);
seconds_left = seconds_left % 86400;
hours = parseInt(seconds_left / 3600);
seconds_left = seconds_left % 3600;
minutes = parseInt(seconds_left / 60);
seconds = parseInt(seconds_left % 60);
// format countdown string + set tag value
countdown.innerHTML = days + "d, " + hours + "h, "
+ minutes + "m, " + seconds + "s";
}, 1000);
答案 0 :(得分:1)
无需使用标签。另外调整范围的样式。
span#countdown {
font-size: 48px;
border: 3px solid black;
padding: 5px;
background-color: #ffe;
}
答案 1 :(得分:1)
有趣的是,我正在做同样的事情。我使用了第一种观察方法,但无法针对每种方法进行定位。这是我完成的codepen。
所以我为不同的元素创建了单独的变量。
var daysTimer = document.getElementById("dayTimer");
var hourTimer = document.getElementById("hourTimer");
var minuteTimer = document.getElementById("minuteTimer");
var secondTimer = document.getElementById("secondTimer");
并确保单独运行
// format countdown string + set tag value
dayTimer.innerHTML = days;
hourTimer.innerHTML = hours;
minuteTimer.innerHTML = minutes;
secondTimer.innerHTML = seconds;
我在无序列表中使用它们,如下所示:
<div id="clock">
<ul id=time>
<li id="dayTimer"></li>
<li id="hourTimer"></li>
<li id="minuteTimer"></li>
<li id="secondTimer"></li>
</ul>
</div>