在当前目录下新建一个目录和一个nvue页面

pages.json文件

{
				"path": "msVideo/msVideo",
				"style": {
					"navigationBarTitleText": "子窗体操作",
					"navigationStyle": "custom",
					"app-plus": {
						"animationType": "slide-out-right",
						"animationDuration": 300,
						"subNVues":[{
							"id":"videos",
							"path":"msVideo/subNvue/videos",
							"type":"popup",
							"style":{
								"margin":"auto",
								"width":"100%",
								"height":"100%",
								"background":"transparent" //背景透明
							}
						}]
					}
				}
			},

然后在子窗体页面中写入 videos.nve

<template>
	<view class="videos" @click="onEvents">
		<view class="videos_e">
			<view class="videos_title">
				<view class="videos_titles">
					<text class="videos_titles_one">提示</text>
				</view>
				<view class="videos_titless">
					<text class="videos_titless_one">是否保存为草稿?</text>
				</view>
			</view>
			<view class="videos_operation">
				<view class="videos_operations">
					<text class="videos_operations_one" @click="onCancel">取消</text>
				</view>
				<view class="videos_operationss">
					<text class="videos_operationss_one" @click="onDetermine">确认</text>
				</view>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {

			}
		},
		onLoad() {

		},
		onShow() {

		},
		methods: {
			// 默认给父级加一个定时器就不会出现点击关闭子窗体的问题了
			onEvents() {

			},
			// 取消
			onCancel() {
				//向原生子窗体传递数据
				uni.$emit('page-popup', {
					msg: "取消"
				});
			},
			// 确定
			onDetermine() {
				//向原生子窗体传递数据
				uni.$emit('page-popup', {
					msg: "确定"
				});
			}
		}
	}
</script>

<style>
	.videos {
		background-color: rgba(0, 0, 0, 0);
		margin: calc(50% - 280rpx) calc(50% - 280rpx);
		align-items: center;
		justify-content: center;
	}

	.videos_e {
		background-color: #FFFFFF;
		height: 299rpx;
		width: 560rpx;
		border-radius: 30rpx;
	}

	.videos_title {
		width: 560rpx;
		height: 200rpx;
		align-items: center;
		justify-content: center;
		border-bottom-width: 1rpx;
		border-color: #E5E5E5;
		border-style: solid;
	}

	.videos_titles_one {
		font-size: 38rpx;
		font-weight: 700;
	}

	.videos_titless {
		margin-top: 15rpx;
	}

	.videos_titless_one {
		font-size: 32rpx;

	}

	.videos_operation {
		width: 560rpx;
		height: 99rpx;
		flex-direction: row;
	}

	.videos_operationss {
		border-left-width: 1rpx;
		border-color: #E5E5E5;
		border-style: solid;
	}

	.videos_operations,
	.videos_operationss {
		width: 280rpx;
		height: 99rpx;
		align-items: center;
		justify-content: center;
	}

	.videos_operations_one {
		font-size: 36rpx;
		color: #343434;
	}

	.videos_operationss_one {
		font-size: 36rpx;
		color: #FF0423;
	}
</style>

然后在父页面通过事件通讯获取子窗体中的方法 msVideo.nvue

<template>
	<view class="container">
		<view @click=“onExten”>点击调用子窗体</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				msg: "",
			}
		},
		onLoad() {
			const self = this;
			uni.$on('page-popup', (data) => {
				self.msg = data.msg;
				self.subNames()
				console.log(data)
			})
		},
		onShow() {

		},
		onUnload() {
			//移除监听
			uni.$off('page-popup')
		},
		methods: {
			// 调用子窗体
			onExten() {
				// 通过 id 获取 nvue 子窗体  
				const subNVue = uni.getSubNVueById('videos')
				// 打开 nvue 子窗体  
				subNVue.show('none', 300);
			},
			// 弹出层做的操作
			subNames() {
				if (this.msg == "确认") {
					
				}
				if (this.msg == "取消") {
					const subNVue  uni.getSubNVueById('videos')
					// 关闭弹窗
					subNVue.hide('none', 300)
				}
			}
		}
	}
</script>

效果图