1.1 input聚焦时显示下拉框，再次点击下拉框或点击其他处下拉框消失，主要靠z-index添加遮罩实现
1.2 实时过滤效果
2.代码 ( vue.js + element-ui )
2.1 html
<el-form :model="form" size="mini" > <el-row> <el-col :span='12'> <el-form-item label="会计主管" > <el-input placeholder="请选择会计主管" v-model="form.MANAGER_NAME" icon="caret-bottom" auto-complete="off" @focus="focus($event)" @click.native="changeSelectTree()"> </el-input> <div v-show="isShowSelect" @click="cancelManager"> </div> <el-tree v-show="isShowSelect" empty-text="暂无数据" :highlight-current = true :default-expand-all = false :expand-on-click-node="false" :filter-node-method="filterNode" :data="userlist" node-key="chr_id" :props="defaultProps" @node-click="selectManage" ref="selectTree"> </el-tree> </el-form-item> </el-col> <el-col :span='12'> </el-col> </el-row> </el-form>
2.2 JS
import 'babel-polyfill'//兼容语法 async focus export default { data(){ return { form: { MANAGER_NAME: '', MANAGER_ID: '', }, isShowSelect: false,// 是否显示会计主管的树状选择器 userlist: [],// 会计主管的选项数据 defaultProps: { // 会计主管 树状选择器 的选项的配置参数 children: 'children', label: 'code_name', }, } }, watch: { form: {//form.MANAGER_NAME变化时过滤节点 handler(form){ if(this.isShowSelect){ this.$refs.selectTree.filter(form.MANAGER_NAME); } }, deep: true,//深度监听，重要 }, }, methods:{ //下拉框的显示与隐藏 changeSelectTree(){ this.isShowSelect = !this.isShowSelect; }, //input获取焦点事件,初始化树 async focus(e) { let vm = this; vm.$refs.selectTree.filter(""); vm.$refs.selectTree.setCurrentNode([]); }, // 选择器的树节点 filterNode(value, data) { if (!value) return true; if(!data.code_name){ data.code_name = data.chr_code + " " + data.chr_name } return data.code_name.indexOf(value) !== -1; }, //选择会计主管 selectManage(data, Node) { this.form.MANAGER_NAME = data.code_name;//input赋值 this.form.MANAGER_ID = data.chr_id; this.isShowSelect = false;// 关闭选择器 }, //点击遮罩层，取消选择会计主管 cancelManager(){ this.isShowSelect = false }, } }
2.3 css
<style lang="scss"> /*下拉框选择树*/ .objectTree { position: absolute; overflow: auto; z-index: 100; width: 110%; height: 200px; border: 1px solid #ddd; line-height: normal; z-index: 204; } .selectTree-input { input:focus { z-index: 204;//103 } } .width-220{ width: 220px } </style>
2.4 参考数据
//示例下拉框数据 this.userList = [{ chr_code: "001001051", chr_id: "9853", chr_name: "张海舒", is_leaf: "1", user_type: "0", }]