vue双向锚点实现过程简易版(scrollIntoView)
作者:Lemon今天学习了吗
这篇文章主要介绍了vue双向锚点实现过程简易版(scrollIntoView),具有很好的参考价值,希望对大家有所帮助,如有错误或未考虑完全的地方,望不吝赐教
一、需求
左边是内容板块,右边是目录结构,点击右边内容跳转到左边相应位置展示,滑动左边内容右边目录自动跳转。
二、实现
- 左边每一个内容模块都给一个ref和应该相同的class类名,方便获取dom;
- 左边内容区域使用滑动事件@scroll="handleScroll",内容区域滑动即触发该方法;
- 右边使用点击事件@click="goAnchor('anchor-' + index, index)"获取当前点击的dom;
handleScroll()
滚动监听方法实现滑动左边内容对应上右边目录
goAnchor()
右边锚点选中跳转相应内容区域,通过scrollIntoView({ behavior: 'smooth' })平滑跳转
实现代码
<template> <div class="panel-block flex"> <div class="panel-left" ref="anchorRef" @scroll="handleScroll"> <div class="panel-item anchor-item" ref="anchor-0"> <div class="panel-item-title">内容区域1</div> xxx </div> <div class="panel-item anchor-item" ref="anchor-1"> <div class="panel-item-title">内容区域2</div> xxx </div> <div class="panel-item anchor-item" ref="anchor-2"> <div class="panel-item-title">内容区域3</div> <div class="panel-item-content"> xxx </div> </div> <div class="panel-item anchor-item" ref="anchor-3"> <div class="panel-item-title">内容区域4</div> <div class="panel-item-content"> xxx </div> </div> </div> <div class="panel-right"> <div class="step-line"></div> <ul class="step-ul"> <li class="flex_align_item_center" v-for="(item, index) in stepData" :key="index" :class="{ 'step-active': activeBtn == index }" @click="goAnchor('anchor-' + index, index)" > <div class="step-icon"></div> <div class="step-label">{{ item }}</div> </li> </ul> </div> </div> </template>
<script> export default { data() { return { activeBtn: 0, //锚点按钮 stepData: ['区域1', '区域2', '区域3', '区域4'], contentDiv: null, //锚点区域 } }, methods: { //锚点跳转 goAnchor(selector, index) { this.activeBtn = index this.$refs[selector].scrollIntoView({ behavior: 'smooth' }) }, // 滚动监听器 handleScroll(i) { // 获取所有锚点元素 const navContents = document.querySelectorAll('.anchor-item') // 所有锚点元素的 offsetTop const offsetTopArr = [] navContents.forEach((item) => { offsetTopArr.push(item.offsetTop) }) // 获取当前文档流的 scrollTop const scrollTop = this.$refs.anchorRef.scrollTop offsetTopArr.forEach((item, index) => { if (scrollTop >= item) { this.activeBtn = index } }) }, } } </script>
-----------------以下为样式代码---------------------- <style lang="scss" scoped> .panel-block { height: 100%; .panel-left { width: calc(100% - 180px); overflow-y: auto; height: 100%; .panel-item { .panel-item-content { padding: 10px; border-top: 0; min-height: 40px; .table-params { .table-header { height: 40px; line-height: 40px; width: 100%; border: 1px solid #ebeef5; border-bottom: none; background: #f5f7fa; font-weight: 700; font-size: 14px; color: #303133; padding-left: 15px; } .table-body-type { height: 32px; line-height: 32px; width: 100%; border: 1px solid #ebeef5; border-bottom: none; color: #303133; padding-left: 15px; .type-title { font-weight: 700; font-size: 12px; } } } } } } .panel-right { padding-top: 10px; position: fixed; left: calc(100% - 210px); .step-line { position: absolute; left: 6px; top: 0; width: 1px; background: #dcdfe6; height: calc(50vh - 85px); z-index: 0; } .step-ul { li { padding-bottom: 20px; .step-icon { width: 13px; height: 13px; margin-right: 20px; border-radius: 50%; z-index: 1; } .step-label { font-weight: 700; font-size: 14px; line-height: 22px; color: #303133; } } .step-active { .step-icon { border: 1px solid #1989fe; background: #fff; } .step-label { color: #1989fe; } } } } ::-webkit-scrollbar { width: 0 !important; } } </style>
总结
以上为个人经验,希望能给大家一个参考,也希望大家多多支持脚本之家。