mirror of
https://github.com/XTLS/Xray-docs-next.git
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65 lines
1.1 KiB
Vue
65 lines
1.1 KiB
Vue
<script setup lang="ts">
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import { ref, onMounted, onUnmounted } from "vue";
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const visible = ref(false);
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const THRESHOLD = 300;
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function onScroll() {
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visible.value = window.scrollY > THRESHOLD;
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}
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function backToTop() {
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window.scrollTo({ top: 0, behavior: "smooth" });
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}
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onMounted(() => {
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onScroll();
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window.addEventListener("scroll", onScroll, { passive: true });
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});
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onUnmounted(() => {
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window.removeEventListener("scroll", onScroll);
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});
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</script>
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<template>
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<button
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v-show="visible"
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class="vp-back-to-top"
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aria-label="Back to top"
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@click="backToTop"
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>
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↑
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</button>
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</template>
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<style scoped>
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.vp-back-to-top {
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position: fixed;
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right: 24px;
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bottom: 24px;
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z-index: 100;
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width: 36px;
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height: 36px;
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border-radius: 999px;
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border: 1px solid var(--vp-c-divider);
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background: var(--vp-c-bg-soft);
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color: var(--vp-c-text-1);
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cursor: pointer;
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font-size: 16px;
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line-height: 1;
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opacity: 0.8;
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transition:
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opacity 0.2s,
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transform 0.2s;
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}
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.vp-back-to-top:hover {
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opacity: 1;
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transform: translateY(-2px);
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}
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</style>
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