修改：调整恋爱日记相关UI

components/scroll-btn/scroll-btn.vue

@@ -0,0 +1,79 @@
+<template>
+	<view class="scroll-btn" :style="{ bottom: bottom }" @click.stop="fnScroll()">
+		<text v-if="_scrollTop >= 180" class="iconfont icon-long-arrow-up"></text>
+		<text v-else class="iconfont icon-long-arrow-down"></text>
+	</view>
+</template>
+
+<script>
+import throttle from '@/utils/throttle.js';
+export default {
+	name: 'scroll-btn',
+	props: {
+		bottom: {
+			type: String,
+			default: '180rpx'
+		},
+		scrollTop: {
+			type: Number,
+			default: 0
+		}
+	},
+	data() {
+		return { _scrollTop: 0 };
+	},
+	watch: {
+		scrollTop(val) {
+			this._scrollTop = val;
+			console.log('监听1：', val);
+			this.$forceUpdate();
+		}
+	},
+	created() {
+		this._scrollTop = this.scrollTop;
+	},
+	methods: {
+		fnScroll() {
+			throttle(() => {
+				const isTop = this._scrollTop >= 180;
+				this._scrollTop = isTop ? 0 : 999999;
+				uni.pageScrollTo({
+					duration: 500,
+					scrollTop: this._scrollTop
+				});
+				this.$emit('update:scrollTop', this._scrollTop);
+			});
+		}
+	}
+};
+</script>
+
+<style scoped lang="scss">
+.scroll-btn {
+	position: fixed;
+	// bottom: 200rpx;
+	// right: -90rpx;
+	right: 52rpx;
+	width: 80rpx;
+	height: 80rpx;
+	display: flex;
+	align-items: center;
+	justify-content: center;
+	box-sizing: border-box;
+	border-radius: 50%;
+	border: 4rpx solid #ffffff;
+	background-color: #bfe9ef;
+	box-shadow: 0rpx 4rpx 24rpx rgba(0, 0, 0, 0.1);
+	z-index: 99;
+	transition: right 0.5s ease-in-out;
+
+	&.is-show {
+		right: 52rpx;
+	}
+
+	.iconfont {
+		font-size: 36rpx;
+		color: #555;
+	}
+}
+</style>