一、方法1：
①纵向滚动条容易设置，只需要在el-tree组件中设置height即可
②横向滚动条稍微复杂，如下代码（或者通过js计算）
<template>
<div class="tree-scroll">
<el-input style="width: 180px;margin-top: 10px"
placeholder="输入关键字进行过滤"
v-model="filterText">
</el-input>
<el-tree
class="flow-tree"
:data="data2"
:props="defaultProps"
default-expand-all
:filter-node-method="filterNode"
ref="tree2">
</el-tree>
</div>
</template>
<script>
export default {
name: "TreeScroll",
watch: {
filterText(val) {
this.$refs.tree2.filter(val);
}
},
methods: {
filterNode(value, data) {
if (!value) return true;
return data.label.indexOf(value) !== -1;
}
},
data() {
return {
filterText: '',
data2: [{
id: 1,
label: '一级 1',
children: [{
id: 4,
label: '二级 1-1',
children: [{
id: 9,
label: '三级 1-1-1'
}, {
id: 10,
label: '三级 1-1-2'
}]
}]
}, {
id: 2,
label: '一级 2',
children: [{
id: 5,
label: '二级 2-1'
}, {
id: 6,
label: '二级 2-2'
}]
}, {
id: 3,
label: '一级 3',
children: [{
id: 7,
label: '二级 3-1'
}, {
id: 8,
label: '二级 3-2滚动条滚动条二级 3-2滚动条滚动条'
}]
}, {
id: 4,
label: '一级 4',
children: [{
id: 71,
label: '二级 4-1'
}, {
id: 81,
label: '二级 4-2滚动条滚动条二级 3-2滚动条滚动条'
}]
}, {
id: 5,
label: '一级 5',
children: [{
id: 711,
label: '二级 5-1'
}, {
id: 811,
label: '二级 5-2滚动条滚动条二级 3-2滚动条滚动条'
}]
}, {
id: 6,
label: '一级 6',
children: [{
id: 7116,
label: '二级 5-1'
}, {
id: 8116,
label: '二级 5-2滚动条滚动条二级 3-2滚动条滚动条'
}]
}],
defaultProps: {
children: 'children',
label: 'label'
}
};
}
}
</script>
<style scoped lang="stylus">
.tree-scroll{
width 200px
border 1px solid #E7E7E7
height 100%
}
.flow-tree{
overflow auto
height 300px
margin 10px
>>>.el-tree-node{
> .el-tree-node__children{
overflow visible !important
}
}
}
</style>https://blog.csdn.net/coinisi_li/article/details/132100838#/
https://www.bilibili.com/video/BV1zw411G7BN/?spm_id_from=333.788
