javascript - 如何在 html 面板中查找标题元素并将事件添加到标题以隐藏 p 标签？

Question

我的 JavaScript 有问题。我正在尝试编写一个脚本来查找容器内的所有标题元素，并向标题添加一个单击事件以隐藏 p 标签。

Javascript 
$(function(){
$("dnn_htmlPan1").find(":header").click(function(){
        $("dnn_htmlPan1").find("p").slideToggle("slow");
    });
});

html

<div id="dnn_htmlPan1" class="htmlPan">
    <h2>EXPLORE</h2>
    <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
</div>

Answer 1

你的 jQuery 选择器是错误的：

#用于 id：

$("#dnn_htmlPan1").find(":header").click(function(){
        $("#dnn_htmlPan1").find("p").slideToggle("slow");
        // or 
        // $(this).parent().find("p").slideToggle("slow");
        // or 
        // $(this).next().slideToggle("slow");
    });
});

---

:header是正确的：

:header选择器

描述：选择所有作为headers的元素，如 h1、h2、h3 等。

在文档中阅读更多信息

Answer 2

改变：

$("dnn_htmlPan1").find(":header").click(function(){

到：

$("#dnn_htmlPan1").find(":header").click(function() {

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