el-tree右键节点动态位置展示菜单；el-tree的节点图片动态根据节点属性color改变背景色；加遮罩层（opacity）

一、el-tree右键节点动态位置展示菜单

关键：@node-contextmenu="handleRightClick"与@node-click=“handleNodeClick”

<div class="content"><el-tabs class="tabs" @tab-click="handleClick" v-model="Modal"><el-tab-pane label="外地" name="on"><el-inputv-model="onFilterText"placeholder="搜索"clearable/><el-scrollbar><el-tree ref="onRef":data="onData" node-key="id" :filter-node-method="filterOnNode"@node-contextmenu="handleRightClick"@node-click="handleNodeClick" default-expand-all ><template #default="{ node, data }"><slot :node="node" :data="data"><img :src="data.icon" style="height: 25px;width: 25px"><span style="margin: 0 10px;">{{ data.name }}</span></slot></template></el-tree></el-scrollbar></el-tab-pane>