top-nav.vue
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<template>
<header-box title="商品详情" class="product-header ghost" ref="header"></header-box>
</template>
<style>
.product-header {
&.ghost {
.blk-header-title {
visibility: hidden;
}
}
.blk-header-gap {
display: none;
}
}
</style>
<script>
import yoho from 'yoho';
import HeaderBox from 'component/header.vue';
export default {
data() {
return {
yoho: yoho
};
},
props: {
title: String,
img: String
},
components: {
HeaderBox
},
methods: {
toggle() {
let ghost = true;
let ghost2 = false;
let ghost3 = false;
if (window.scrollY > 100) {
ghost = false;
ghost2 = false;
ghost3 = false;
} else if (window.scrollY > 70) {
ghost = false;
ghost3 = true;
} else if (window.scrollY > 30) {
ghost = false;
ghost2 = true;
}
this.$refs.header.$el.classList.toggle('ghost', ghost);
this.$refs.header.$el.classList.toggle('ghost-2', ghost2);
this.$refs.header.$el.classList.toggle('ghost-3', ghost3);
}
},
created() {
window.addEventListener('touchmove', () => {
this.toggle();
});
window.addEventListener('scroll', () => {
this.toggle();
});
}
};
</script>