top.vue
1.15 KB
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<template>
<div class="top-wrapper" v-show="showTop" @click="goTop">
<img src="../images/back-top.png" alt="Top" />
</div>
</template>
<script>
export default {
name: "top",
components: {},
props: {},
computed: {
showTop() {
return this.scrollTop > 300;
},
},
data() {
return {
scrollTop: 0,
};
},
watch: {},
created() { },
mounted() {
window.addEventListener("scroll", () => {
this.scrollTop =
document.documentElement.scrollTop ||
document.body.scrollTop;
});
},
beforeDestroy() { },
methods: {
goTop() {
let back = setInterval(() => {
if (document.documentElement.scrollTop || document.body.scrollTop) {
document.documentElement.scrollTop -= 80;
document.body.scrollTop -= 80;
} else {
clearInterval(back);
}
}, 20);
},
},
};
</script>
<style lang="less" scoped>
.top-wrapper {
img {
position: fixed;
bottom: 120px;
right: 120px;
width: 80px;
object-fit: contain;
border-radius: 50%;
cursor: pointer;
}
}
</style>