xunjian_app/scan_pages/components/c-dropdown/index.vue

<template>
	<view>
		<u-dropdown v-if="options != null"   style="width:100%; display: flex;">
			<u-dropdown-item height="450"  @change="changitem" v-model="value" :title="ctitle" :options="options"></u-dropdown-item>
		</u-dropdown>
	</view>
</template>

<script>
	export default {
		props: {
			title: {
				type: String,
			},
			options: {
				type: Array
			},

		},
		data() {
			return {
				ctitle: "",
				value:''
			}

		},
		created() {
			this.ctitle = this.title
		},
		
		methods: {
			changitem(val) {
				let item = this.itemfind(val)
				this.ctitle = item.label
				this.$emit("getroomList", val,-1)
			},
			//查找标题
			itemfind(index) {
				return this.options.find(e => e.value == index)
			},
		}
	}
</script>

<style>
	.u-dropdown {
	display: flex;
	}
	.u-dropdown__menu{
		border: 1px solid red;
	}
</style>