uniapp开发小程序—picker结合后台数据实现二级联动的选择

    <template>
    	<view>
    		<picker mode="multiSelector" @change="bindMultiPickerChange" @columnchange="bindMultiPickerColumnChange"
    			:value="multiIndex" :range="multiArray">
    			<view class="picker">
    				{{multiArray[0][multiIndex[0]]}} > {{multiArray[1][multiIndex[1]]}}
    			</view>
    		</picker>
    	</view>
    </template>
    <script>
    	export default {
    		data() {
    			return {
    				multiArray: [],
    				multiIndex: