From 8adb8fd3bd6359b196874eafc0c93b9741226ca7 Mon Sep 17 00:00:00 2001
From: LCJ-MinYa <1049468118@qq.com>
Date: Thu, 16 Jan 2025 17:23:00 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20v-html=E5=8A=A0=E8=BD=BDdom=E5=8A=A8?=
 =?UTF-8?q?=E6=80=81=E6=B7=BB=E5=8A=A0=E4=BA=8B=E4=BB=B6=EF=BC=8C=E5=9F=8B?=
 =?UTF-8?q?=E7=82=B9=E7=AD=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/router/modules/demo.ts          |   4 +
 src/views/demo/dynamicNodeEvent.vue | 222 ++++++++++++++++++++++++++++
 2 files changed, 226 insertions(+)
 create mode 100644 src/views/demo/dynamicNodeEvent.vue

diff --git a/src/router/modules/demo.ts b/src/router/modules/demo.ts
index 6b1aeb5..5f49a5d 100644
--- a/src/router/modules/demo.ts
+++ b/src/router/modules/demo.ts
@@ -44,6 +44,10 @@ const titleArr = [
         key: 'autoLoadData',
         title: '首页高度足够，自动触发下拉加载数据',
     },
+    {
+        key: 'dynamicNodeEvent',
+        title: '动态html加载的事件监听',
+    },
 ];
 
 // @/views/demo/**/*.vue
diff --git a/src/views/demo/dynamicNodeEvent.vue b/src/views/demo/dynamicNodeEvent.vue
new file mode 100644
index 0000000..63c3dbf
--- /dev/null
+++ b/src/views/demo/dynamicNodeEvent.vue
@@ -0,0 +1,222 @@
+<template>
+    <div
+        ref="boxRef"
+        class="box"
+        @scroll.passive="handleScroll"
+    >
+        <div v-loading="loading">
+            <div
+                v-for="(item, index) in list"
+                :key="index"
+                class="html-item"
+            >
+                <h2>标题：{{ item.title }}</h2>
+                <div
+                    v-html="item.html"
+                    @click="handleClickHtml($event, item)"
+                ></div>
+                <el-divider />
+            </div>
+        </div>
+    </div>
+</template>
+
+<script setup lang="jsx">
+import { ref, onMounted, onBeforeUnmount, nextTick } from 'vue';
+import { debounce } from '@pureadmin/utils';
+
+const boxRef = ref(null);
+const list = ref([]);
+const loading = ref(false);
+const videoAddEventListeners = ref([]);
+
+/**
+ * 将富文本内的所有点击链接，点击图片，点击视频，点击按钮等绑定埋点事件
+ */
+const html = `<a href='https://www.baidu.com' style='text-decoration: underline;'>点击链接</a><br /><br/>
+<img src='https://www.baidu.com/img/flexible/logo/pc/result.png' /><br /><br/>
+<button style='background-color: #4CAF50; border: none; color: white; padding: 10px 20px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer;'>按钮</button>
+<video src="https://www.w3school.com.cn/i/movie.ogg" controls="controls"></video>
+<video controls="controls"><source src="https://www.w3school.com.cn/i/movie.mp4" type="video/ogg"></video>
+<a href='https://www.baidu.com' style='text-decoration: underline;'><span>有内容标签的链接</span></a><br /><br/>
+<a href='https://www.baidu.com' style='text-decoration: underline;'><img alt='可以跳转的图片' src='https://www.baidu.com/img/flexible/logo/pc/result.png' /></a><br /><br/>
+`;
+
+const getHerfAttribute = (dom) => {
+    return dom.getAttribute('href') || dom.href || '';
+};
+
+// 通过v-html渲染的富文本，模拟事件委托
+const handleClickHtml = async (event, item) => {
+    const currentDom = event.target;
+    const parentDom = currentDom.parentNode;
+    let currentDomHref = getHerfAttribute(currentDom);
+    let parentHref = getHerfAttribute(parentDom);
+
+    // 跳转链接
+    let jumpLink = '';
+    // 埋点参数
+    let params = {};
+    switch (currentDom.tagName) {
+        case 'A':
+            event.preventDefault();
+            jumpLink = currentDomHref;
+            params.link = currentDomHref;
+            params.type = 'link';
+            break;
+        case 'IMG':
+            if (parentDom.tagName === 'A') {
+                event.preventDefault();
+                jumpLink = parentHref;
+                params.link = parentHref;
+            }
+            params.type = 'image';
+            params.src = currentDom.getAttribute('src') || currentDom.src;
+            break;
+        case 'BUTTON':
+            params.type = 'button';
+            params.text = currentDom.textContent;
+            break;
+        default:
+            if (parentDom.tagName === 'A') {
+                event.preventDefault();
+                jumpLink = parentHref;
+                params.link = parentHref;
+                params.type = 'link';
+            }
+            break;
+    }
+
+    // 有需要埋点的事件
+    if (params.type) {
+        await new Promise((resolve) => {
+            params.title = item.title;
+            setTimeout(() => {
+                console.log(`触发${params.type}埋点事件`);
+                console.table(params);
+                resolve();
+            }, 500);
+        });
+        // 跳转链接
+        if (jumpLink) {
+            console.log(`跳转链接：${jumpLink}`);
+            // window.location.href = jumpLink;
+        }
+    }
+};
+
+const videoBuryingPoint = (type, src, title) => {
+    console.log(`视频${type}事件，视频地址：${src}, 视频所属标题：${title}`);
+};
+
+const videoAddEventListener = () => {
+    let videos = boxRef.value.querySelectorAll('video');
+    for (let i = 0; i < videos.length; i++) {
+        const video = videos[i];
+        // 防止重复绑定事件
+        if (!video.dataset.listenerAdded) {
+            //video 属性上有src，则直接通过video.src获取视频地址
+            const src = video.src;
+            //video 内有source标签，则只能通过获取source标签的src来获取视频地址
+            const sources = video.getElementsByTagName('source');
+            //如果有多个source标签，则取第一个source标签的src
+            const sourceSrc = sources.length ? sources[0].src : '';
+            // 查找最近的祖先节点，直到找到具有 'html-item' 类名的元素
+            const ancestorWithHtmlItemClass = video.closest('.html-item');
+            const title = ancestorWithHtmlItemClass.querySelector('h2').textContent;
+            const playHandler = () => videoBuryingPoint('play', src || sourceSrc, title);
+            const pauseHandler = () => videoBuryingPoint('pause', src || sourceSrc, title);
+            const endedHandler = () => videoBuryingPoint('ended', src || sourceSrc, title);
+            const volumeChangeHandler = () => videoBuryingPoint('volumechange', src || sourceSrc, title);
+            video.addEventListener('play', playHandler);
+            video.addEventListener('pause', pauseHandler);
+            video.addEventListener('ended', endedHandler);
+            video.addEventListener('volumechange', volumeChangeHandler);
+
+            // 存储事件处理函数以便后续移除
+            videoAddEventListeners.value.push({
+                video,
+                playHandler,
+                pauseHandler,
+                endedHandler,
+                volumeChangeHandler,
+            });
+            video.dataset.listenerAdded = true;
+        }
+    }
+};
+
+const videoRemoveEventListener = () => {
+    videoAddEventListeners.value.forEach((item) => {
+        const { video, playHandler, pauseHandler, endedHandler, volumeChangeHandler } = item;
+        video.removeEventListener('play', playHandler);
+        video.removeEventListener('pause', pauseHandler);
+        video.removeEventListener('ended', endedHandler);
+        video.removeEventListener('volumechange', volumeChangeHandler);
+    });
+    videoAddEventListeners.value = [];
+};
+
+const getData = () => {
+    loading.value = true;
+    console.log('加载数据');
+    setTimeout(() => {
+        loading.value = false;
+        let tempList = [];
+        let currentLength = list.value.length;
+        for (let i = 0; i < 5; i++) {
+            tempList.push({
+                title: `模拟数据${i + currentLength}`,
+                html,
+            });
+        }
+        list.value = list.value.concat(tempList);
+        nextTick(() => {
+            videoAddEventListener();
+        });
+    }, 2000);
+};
+
+const scrollLoadData = () => {
+    console.log('监听滚动事件');
+    /**
+     * scrollTop：滚动元素的顶部到可视区域顶部的距离。
+     * clientHeight：可视区域的高度。
+     * scrollHeight：内容的总高度。
+     */
+    const { scrollTop, clientHeight, scrollHeight } = boxRef.value;
+    console.log(scrollTop, clientHeight, scrollHeight);
+    if (scrollTop + clientHeight >= scrollHeight - 20) {
+        console.log('距离底部还有20px, 加载数据');
+        getData();
+    }
+};
+
+const handleScroll = debounce(scrollLoadData, 500);
+
+onMounted(() => {
+    getData();
+});
+
+onBeforeUnmount(() => {
+    videoRemoveEventListener();
+});
+</script>
+
+<style lang="scss" scoped>
+.box {
+    display: flex;
+    width: 100%;
+    flex-direction: column;
+    align-items: center;
+    background: #fff;
+    // 要监听滚动事件，必须设置高度，并且设置滚动为auto，否则监听事件不生效
+    height: calc(100vh - 81px);
+    overflow-y: auto;
+
+    & > div {
+        width: 100%;
+        padding: 10px 20px;
+    }
+}
+</style>