<template>
<div class="container">
<!-- <el-row>
<el-col :span="3">
<el-menu
default-active="2"
class="el-menu-vertical-demo"
@open="handleOpen"
@close="handleClose">
<el-submenu index="1">
<template slot="title">
<h4>导航一</h4>
</template>
<el-menu-item-group>
<el-menu-item index="1-1" ><a href="#1" rel="external nofollow" >选项1</a></el-menu-item>
<el-menu-item index="1-2" ><a href="#2" rel="external nofollow" >选项2</a></el-menu-item>
</el-menu-item-group>
<el-menu-item index="1-3" ><a href="#3" rel="external nofollow" >选项3</a></el-menu-item>
</el-menu-item-group>
<el-submenu index="1-4">
<template slot="title"><a href="#4" rel="external nofollow" >选项4</a></template>
<el-menu-item index="1-4-1">选项1</el-menu-item>
</el-submenu>
</el-submenu>
<el-menu-item index="2">
<span slot="title">导航二</span>
</el-menu-item>
<el-menu-item index="3" disabled>
<span slot="title">导航三</span>
</el-menu-item>
<el-menu-item index="4">
<span slot="title">导航四</span>
</el-menu-item>
</el-menu>
</el-col>
<el-col :span="21">
<el-form label-width="100%">
<div class="info" id="1">
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
</div>
<br>
<div class="info" id="2">
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
</div>
<br>
<div class="info" id="3">
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
</div>
<div class="info" id="4">
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
<el-input placeholder="请输入内容"></el-input>
</div>
</el-form>
</el-col>
</el-row> -->
<el-row>
<el-col :span="3">
<div class="list">
<ul>
<li v-for="(item,index) in title_list" :key="index">
<span ref="spans" :style="{color: activeStep === index ? '#1987e1' : '#000000'}"
@click="jump(index)">
{{item.title}}
</span>
</li>
</ul>
</div>
</el-col>
<el-col :span="21">
<div class="result" @scroll="onScroll" >
<div class="scroll-item"><span>第一</span></div>
<div class="scroll-item"><span>第二</span></div>
<div class="scroll-item"><span>第三</span></div>
<div class="scroll-item"><span>第四</span></div>
<div class="scroll-item"><span>第五</span></div>
</div>
</el-col>
</el-row>
</div>
</template>
<script>
export default {
methods:{
jump(index) {
var items = document.querySelectorAll(".scroll-item");
for (var i = 0; i < items.length; i++) {
if (index === i) {
items[i].scrollIntoView({
block: "start",//默认跳转到顶部
behavior: "smooth"//滚动的速度
});
}
}
},
onScroll(e) {
let scrollItems = document.querySelectorAll(".scroll-item");
for (let i = scrollItems.length - 1; i >= 0; i--) {
// 判断滚动条滚动距离是否大于当前滚动项可滚动距离
let judge =
e.target.scrollTop >=
scrollItems[i].offsetTop - scrollItems[0].offsetTop;
if (judge) {
this.activeStep = i;
break;
}
}
},
},
data() {
return {
activeStep :0,
title_list:[
{title:'第一'},
{title:'第二'},
{title:'第三'},
{title:'第四'},
{title:'第五'},
]
}
}
// methods: {
// handleOpen(key, keyPath) {
// console.log(key, keyPath);
// },
// handleClose(key, keyPath) {
// console.log(key, keyPath);
// }
// }
}
</script>
<style>
.el-row {
margin-bottom: 20px;
&:last-child {
margin-bottom: 0;
}
}
.el-col {
border-radius: 4px;
}
.bg-purple-dark {
background: #99a9bf;
}
.bg-purple {
background: #d3dce6;
}
.bg-purple-light {
background: #e5e9f2;
}
.grid-content {
border-radius: 4px;
min-height: 36px;
}
.row-bg {
padding: 10px 0;
background-color: #f9fafc;
}
/* .list {
width: 140px;
height: 240px;
margin-bottom: 20px;
background: pink;
position:fixed;
right:20px;
top:300px;
} */
ul {
width:140px;
height: 40px;
line-height: 40px;
list-style: none;
}
li {
/* float: left; */
font-size: 30px;
}
li>span {
cursor:pointer;
}
.result {
/* width: 100%; */
height: 500px;
overflow: scroll;
}
.scroll-item {
width: 100%;
height: 500px;
margin-top:20px;
background: yellow;
}
.scroll-item>span {
font-size: 40px;
}
.scroll-item:first-child {
height:1000px;
margin-top: 0;
}
.scroll-item:last-child {
height: 500px;
}
</style>