在html页面中使用javascript变量的值

Question

So I am trying to make an html header which automatically changes the number on the header countdown style. 因此，我尝试制作一个HTML标头，该标头会自动更改标头倒计时样式上的数字。 I have a working javascript variable which returns the days until my event. 我有一个有效的javascript变量，该变量返回直到我的活动开始为止的日期。 How can I pull the number calculated by the variable "daysUntil" into a span id called countdown in html page? 如何将变量“ daysUntil”计算出的数字拉入html页面中名为spandown的范围ID？

I searched for a solution and found a few answers regarding getElementById but was unsure how to implement it. 我搜索了一个解决方案，并找到了一些有关getElementById的答案，但不确定如何实现。 I am JUST barely learning so thanks in advance if its a really basic question! 我只是勉强学习，因此，如果这是一个非常基本的问题，请先感谢！

<!DOCTYPE html>
<head>
  <title>Countdown</title>
  <link rel="stylesheet" type="text/css" href="css/style.css">
  <script>
    var d1 = new Date(); //"now"
    var d2 = new Date("2016/11/28")  // some date
    var diff = Math.abs(d2-d1)/(1000*60*60*24);
    var daysUntil = Math.ceil(diff)
  </script>
</head>
<body>
<div class="nav" id="top">
  <ul>
    <li><a href="/">COUNTDOWN</a></li>
    <li><a href="portfolio.html">Portfolio</a></li>
    <li><a href="connect.html">Connect with Me</a></li>
  </ul>
</div>
<div class="clearfix" id="content">
  <div class="left">
    <h1>T Minus <span id="countdown"></span>days!</h1>
<!-- The rest of the code is omitted-->

Answer 1

https://developer.mozilla.org/en-US/docs/Web/API/Node/textContent https://developer.mozilla.org/en-US/docs/Web/API/Node/textContent

This is the way to go, as well, as innerText and innerHTML . 这也是innerText和innerHTML的必经之路。

The simple example would go as follow 简单的例子如下

document.getElementById('countdown').textContent = daysUntil.toString()

Answer 2

You have to put your <script> after your countdown element. 您必须将<script>放在倒数元素之后。

See live demo 观看现场演示

... 
<div class="left">
    <h1>T Minus <span id="countdown"></span>days!</h1>

    <script>
    var d1 = new Date(); //"now"
    var d2 = new Date("2016/11/28")  // some date
    var diff = Math.abs(d2-d1)/(1000*60*60*24);
    var daysUntil = Math.ceil(diff);

    var countdown = document.getElementById('countdown');        
    countdown.textContent = daysUntil + ' ';

    </script>
    </body>
  </html>

在html页面中使用javascript变量的值

问题描述

2 个解决方案

解决方案1
4 2016-10-19 23:53:14

解决方案2
0 已采纳 2016-10-20 00:00:33

在html页面中使用javascript变量的值

问题描述

2 个解决方案

解决方案1 4 2016-10-19 23:53:14

解决方案2 0 已采纳 2016-10-20 00:00:33

解决方案1
4 2016-10-19 23:53:14

解决方案2
0 已采纳 2016-10-20 00:00:33