使用 JavaScript 设置自定义属性 [英] Set custom attribute using JavaScript

问题描述

我正在使用 The DynaTree (https://code.google.com/p/dynatree)，但我遇到了一些问题，希望有人能提供帮助..

我在页面上显示树，如下所示:

<ul><li class="文件夹">输出<ul><li id="item1" data="icon: 'base.gif', url: 'page1.htm', target: 'AccessPage'">Item 1 Title<li id="item2" data="icon: 'base.gif', url: 'page2.htm', target: 'AccessPage'">Item 2 Title<li id="item3" data="icon: 'base.gif', url: 'page3.htm', target: 'AccessPage'">Item 3 Title<li id="item4" data="icon: 'base.gif', url: 'page4.htm', target: 'AccessPage'">Item 4 Title

但是，我试图更改项目上的图标，无论它是否被选中或不只使用 JavaScript.

我要使用的新图标是 base2.gif

我尝试使用以下方法，但似乎不起作用:

document.getElementById('item1').data = "icon: 'base2.gif', url: 'output.htm', target: 'AccessPage', output: '1'";

有人知道我做错了什么吗?

解决方案

使用setAttribute方法:

document.getElementById('item1').setAttribute('data', "icon: 'base2.gif', url: 'output.htm', target: 'AccessPage', output: '1'");

但您确实应该使用数据后跟破折号及其属性，例如:

并在 JS 中使用 dataset 属性:

document.getElementById('item1').dataset.icon = "base.gif";

I am using The DynaTree (https://code.google.com/p/dynatree) but I am having some problems and hoping someone can help..

I am displaying the tree on the page like below:

<div id="tree">
        <ul>
            <li class="folder">Outputs
                <ul>
                    <li id="item1" data="icon: 'base.gif', url: 'page1.htm', target: 'AccessPage'">Item 1 Title
                    <li id="item2" data="icon: 'base.gif', url: 'page2.htm', target: 'AccessPage'">Item 2 Title
                    <li id="item3" data="icon: 'base.gif', url: 'page3.htm', target: 'AccessPage'">Item 3 Title
                    <li id="item4" data="icon: 'base.gif', url: 'page4.htm', target: 'AccessPage'">Item 4 Title
                </ul>
        </ul>
    </div>

However I am trying to change the icon on a item no matter if it's selected or not only using JavaScript.

the new icon I want to use is base2.gif

I have tried using the following but it don't seem to work:

document.getElementById('item1').data = "icon: 'base2.gif', url: 'output.htm', target: 'AccessPage', output: '1'";

anyone know what I might be doing wrong?

解决方案

Use the setAttribute method:

document.getElementById('item1').setAttribute('data', "icon: 'base2.gif', url: 'output.htm', target: 'AccessPage', output: '1'");

But you really should be using data followed with a dash and with its property, like:

<li ... data-icon="base.gif" ...>

And to do it in JS use the dataset property:

document.getElementById('item1').dataset.icon = "base.gif";

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