选取框的nodeValue动态更新

Question

I have a basic problem where I couldn't update the marquee nodeValue dynamically. 我有一个基本问题，无法动态更新选取框的nodeValue。 The following is the HTML Code. 以下是HTML代码。

<!DOCTYPE html>
<html>
    <head>
       <script src="update.js" language="javascript" type="text/javascript"></script>
    </head>
    <body>
       <marquee behavior="scroll" direction="left" id="marquee"></marquee>
    </body>
</html>

And the update.js is 而update.js是

document.getElementById("marquee").firstChild.nodeValue = "New Text";
document.getElementById("marquee").start();

Can anyone tell me how to update the Marquee from other javascript. 谁能告诉我如何从其他JavaScript更新字幕。

Answer 1

Your marquee element does not have a firstChild . 您的marquee元素没有firstChild 。 Your code will work as it is if you give it a default value: 如果您给它一个默认值，您的代码将按原样运行：

<marquee behavior="scroll" direction="left" id="marquee">Default</marquee>

Alternatively, you can set its textContent (or innerText where appropriate): 另外，您可以设置其textContent （或在适当时设置innerText ）：

document.getElementById("marquee").textContent = "New Text";

But marquee ... really?! 但是marquee ...真的吗？ I'd suggest looking at alternative solutions. 我建议寻找替代解决方案。

选取框的nodeValue动态更新

问题描述

1 个解决方案

解决方案1
0 已采纳 2013-08-01 07:18:29

选取框的nodeValue动态更新

问题描述

1 个解决方案

解决方案1 0 已采纳 2013-08-01 07:18:29

解决方案1
0 已采纳 2013-08-01 07:18:29