What is used to achieve this web page effect?

As shown in the picture, such a menu bar can be dynamically expanded by clicking on it. . . What is used to achieve this?

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As shown in the picture, such a menu bar can be dynamically expanded by clicking on it. . . What is used to achieve this?

The answer from the first floor is also drunk. . Who doesn’t know that it is js css? The specific implementation is as follows:

<code><ul>
<li>房间信息</li>
<li>订单信息</li>
<li>会员
    <ul style="display:none">
    <li>查看会员</li>
    <li>录入会员信息</li>
    </ul>
</li>
<ul></ul>
</ul></code>

The above is the HTML structure. The idea is to nest the ul and hide it. When the user clicks 'Member', use js to .show() it, and then use .slideUp() to expand it.

jQuery seems to have such an effect directly. Please look for similar plug-ins for details.

Search jquery ui accordion panel

css3 transition can give style changes a transition effect
As for how to change the style, of course it is js

js css

js css menu bar dynamic expansion
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