Posted in Javascript onNovember 02, 2020
(1)组件解释:
本组件是为了解决二级联动的效果编写的,这里使用了省份和城市分开的效果,具体展示效果,可以参考下面。
(2)组件代码:
<template> <div> <button @click="showM">{{ value || "选择省份" }}</button> <button @click="showC">{{ value2 || "选择城市" }}</button> <!-- 省份 --> <van-popup v-model="showPicker" position="bottom"> <van-picker show-toolbar :columns="columns" @confirm="onConfirm" @cancel="showPicker = false" /> </van-popup> <!-- 城市 --> <van-popup v-model="showPicker2" position="bottom"> <van-picker show-toolbar :columns="columns2" @confirm="onConfirm2" @cancel="showPicker2 = false" /> </van-popup> </div> </template> <script> export default { mounted() {}, data() { return { value: "", value2: "", columns: ["杭州", "北京", "海南省"], city: [ { name: "杭州", value: ["广州", "佛山"] }, { name: "北京", value: ["海淀", "廊坊"] }, { name: "海南省", value: ["三亚", "海口"] } ], showPicker: false, showPicker2: false, columns2: [] }; }, methods: { onConfirm(value) { this.value = value; this.value2 = ""; this.showPicker = false; }, onConfirm2(value) { this.value2 = value; this.showPicker2 = false; }, showM() { this.showPicker = true; }, showC() { if (this.value) { let self = this; self.showPicker2 = true; self.city.forEach(v => { if (v.name == self.value) { self.value2 = self.name; self.columns2 = v.value; } }); } else { } } }, components: {} }; </script> <style lang="scss" scoped> </style>
(3)展示效果:
还可以结合筛选功能使用:
补充知识:vant二级联动picker选择器
我就废话不多说了,大家还是直接看代码吧~
<van-picker :columns="columns" @change="onChange" />
const citys = { '浙江': ['杭州', '宁波', '温州', '嘉兴', '湖州'], '福建': ['福州', '厦门', '莆田', '三明', '泉州'] };
data:{ columns: [ { values: Object.keys(citys), className: 'column1' }, { values: citys['浙江'], className: 'column2', defaultIndex: 2 } ], }
onChange(picker, values) { picker.setColumnValues(1, citys[values[0]]); console.log(values) },
以上这篇vant自定义二级菜单操作就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持三水点靠木。
vant自定义二级菜单操作
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