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58
components/toTop/toTop.vue
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58
components/toTop/toTop.vue
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<!-- 回到顶部的按钮 -->
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<template>
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<image
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class="mescroll-totop"
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:class="[value ? 'mescroll-totop-in' : 'mescroll-totop-out']"
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:src="$util.img('public/uniapp/common/mescroll-totop.png')"
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mode="widthFix"
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@click="toTopClick"
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/>
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</template>
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<script>
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export default {
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data() {
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return {
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value: true
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};
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},
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methods: {
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toTopClick() {
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this.$emit('toTop'); // 派发点击事件
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}
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}
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};
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</script>
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<style>
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/* 回到顶部的按钮 */
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.mescroll-totop {
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z-index: 99;
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position: fixed !important; /* 加上important避免编译到H5,在多mescroll中定位失效 */
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right: 46rpx !important;
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bottom: 272rpx !important;
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width: 72rpx;
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height: 72rpx;
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border-radius: 50%;
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opacity: 0;
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transition: opacity 0.5s; /* 过渡 */
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margin-bottom: var(--window-bottom); /* css变量 */
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}
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/* 适配 iPhoneX */
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.mescroll-safe-bottom {
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margin-bottom: calc(var(--window-bottom) + constant(safe-area-inset-bottom)); /* window-bottom + 适配 iPhoneX */
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margin-bottom: calc(var(--window-bottom) + env(safe-area-inset-bottom));
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}
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/* 显示 -- 淡入 */
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.mescroll-totop-in {
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opacity: 1;
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}
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/* 隐藏 -- 淡出且不接收事件*/
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.mescroll-totop-out {
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opacity: 0;
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pointer-events: none;
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}
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</style>
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