IHG/components/extra/navbarTransparent.vue

<template>
	<view :class="{navbarTran: true, active: active}" :style="{height: `${placeholderHeight}px`}">
		<view :style="{height: `${barHeight}px`, marginTop:`${barTop}px`}">
			<uni-icons style="margin-left: 10px;" type="back" color="#000000" size="26" @click="back"></uni-icons>
			<text style="margin-left: 10px;">{{title}}</text>
		</view>
	</view>
</template>

<script>
	export default{
		name: "navbarTransparent",
		props:['title'],
		data(){
			return {
				barTop:0,
				barHeight:0,
				placeholderHeight:0,
				active:false,
				timer: 0
			}
		},
		onReady(){
			this.barTop = uni.getSystemInfoSync().statusBarHeight
			const menuButtonInfo = uni.getMenuButtonBoundingClientRect()
			this.barHeight = menuButtonInfo.height + (menuButtonInfo.top - this.barTop) * 2
			this.placeholderHeight = this.barHeight + this.barTop
		},
		onHide(){
			clearInterval(this.timer)
		},
		
		methods:{
			back(){
				uni.navigateBack({
					fail:()=>{
						uni.switchTab({
							url: "/pages/index/index"
						})
					}
				})
			},
			
		}
	}
</script>

<style lang="scss" scoped>
	.navbarTran{
		z-index: 100;
		position: fixed;
		top: 0;
		// height: 100rpx;
		width: 100%;
		background-color: transparent;
		transition: 0.3s all;
		
		>view{
			display: flex;
			align-items: center;
			justify-content: flex-start;
		}
		text{
			color:#000;
			font-size: 32rpx;
			text-shadow: 0.1px 0.1px 0.2px #000;
		}
		
		&.active{
			background-color: #fff;
		}
	}
</style>