267 lines
7.3 KiB
Vue
267 lines
7.3 KiB
Vue
<template>
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<div class="small">
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<div class="_title">
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<div style="height: 394px; background-color: #108de9"></div>
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<div class="_li" :class="isFixed ? '_fixed' : ''">
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<ul class="conter1000">
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<li
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:class="activeId == item.id ? '_active' : ''"
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v-for="(item, index) in caseList"
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:key="item.id"
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@click="setScrollTop(item.id, index)"
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>
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{{ item.title }}
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</li>
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</ul>
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</div>
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</div>
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<div class="box" v-show="!isShowMore">
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<div
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class="_item"
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:ref="setItemRef"
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v-once
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v-for="(item, index) in caseList"
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:key="index"
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:data-id="item.id"
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>
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<h3 class="_tit text-center" style="font-size: 24px; color: #333333">
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{{ item.title }}
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</h3>
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<div class="_info conter1000">
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<div class="_r" v-if="isOddEvenNumber(index)">img</div>
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<div
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class="_l"
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:class="isOddEvenNumber(index) ? '_paddingl' : '_paddingr'"
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>
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<h3 :class="isOddEvenNumber(index) ? 'text-right' : ''">
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{{ item.title }}
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</h3>
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<!-- <p>{{ item.description }}</p> -->
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<p>
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本项目将生产废水分质处理后，提升进入曝气微电解反应器内，通过铁、碳原料在酸性情况下形成微电池，首先对铜氨络合物破络；其次对油墨等有机物质开环断链，提高废水的可生化性。更突出的是，利用金属离子的活性：铁置换其他金属离子，从而从废水中除去，然后经生化系统处理后，出水各污染物指标稳定达标排放。本项目具有处理效率高、以废治废能耗低、管理简单、出水稳定达标等优点。本项目将生产废水分质处理后，提升进入曝气微电解反应器内，通过铁、碳原料在酸性情况下形成微电池，首先对铜氨络合物破络；其次对油墨等有机物质开环断链，提高废水的可生化性。更突出的是，利用金属离子的活性：铁置换其他金属离子，从而从废水中除去，然后经生化系统处理后，出水各污染物指标稳定达标排放。本项目具有处理效率高、以废治废能耗低、管理简单、出水稳定达标等优点。
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</p>
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</div>
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<div class="_r" v-if="!isOddEvenNumber(index)">img</div>
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</div>
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<div class="_list conter1400">
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<ul>
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<li v-for="item in 6" :key="item">
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<el-image
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style="width: 100%; height: 135px"
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src="https://cube.elemecdn.com/6/94/4d3ea53c084bad6931a56d5158a48jpeg.jpeg"
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fit="cover"
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></el-image>
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<div class="_head text_hidden">
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盘活本地技术供需对接，某企业引盘活本地技术供需对接，某企业引
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</div>
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<div class="_detail text_hidden">
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江启明电子有限公司自成立以来始终专注于LED显示屏。
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</div>
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</li>
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</ul>
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<div class="_liBtn text-right">
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<el-button class="x_btns" @click="handleShowMore(item)"
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>查看更多</el-button
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>
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</div>
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</div>
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</div>
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</div>
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<seeMore
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v-show="isShowMore"
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v-model:isShowMore="isShowMore"
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v-model:oneLevelTitle="oneLevelTitle"
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></seeMore>
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<webFooter></webFooter>
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</div>
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</template>
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<script setup>
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import { nextTick, onMounted } from "vue";
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import seeMore from "./components/seeMore.vue";
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import webFooter from "@/components/webFooter/index.vue";
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const oneLevelTitle = ref({});
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const isShowMore = ref(false);
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const activeId = ref("");
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const itemRefs = [];
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const setItemRef = (el) => {
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if (el) {
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itemRefs.push(el);
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}
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};
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const caseList = reactive([
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{
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id: "1",
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title: "宣传介绍1",
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description: "方案详细描述",
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image: "",
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},
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{
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id: "2",
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title: "宣传介绍2",
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description: "方案详细描述",
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image: "",
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},
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{
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id: "3",
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title: "宣传介绍3",
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description: "方案详细描述",
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image: "",
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},
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]);
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const scrollTop = ref(0);
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const isFixed = ref(false);
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onMounted(() => {
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activeId.value = caseList[0].id;
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document.addEventListener("scroll", () => {
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scrollTop.value = getScroll().top;
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if (scrollTop.value >= 394) {
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isFixed.value = true;
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} else {
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isFixed.value = false;
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}
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itemRefs.map((item) => {
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if (isShowMore.value) return false;
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if (scrollTop.value >= item.offsetTop - 80) {
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activeId.value = item.getAttribute("data-id");
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}
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});
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});
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});
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function getScroll() {
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return {
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left:
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window.pageXOffset ||
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document.documentElement.scrollLeft ||
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document.body.scrollLeft ||
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0,
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top:
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window.pageYOffset ||
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document.documentElement.scrollTop ||
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document.body.scrollTop ||
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0,
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};
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}
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function setScrollTop(id, index) {
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// if (isShowMore.value) return false;
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isShowMore.value = false;
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nextTick(() => {
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window.scrollTo({
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// - 80
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top: itemRefs[index].offsetTop,
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});
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});
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activeId.value = id;
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}
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function isOddEvenNumber(num) {
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return num % 2 == 0 ? false : true;
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}
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function handleShowMore(item) {
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oneLevelTitle.value = item;
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window.scrollTo({
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top: 0,
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});
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isShowMore.value = true;
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}
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</script>
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<style lang="scss" scoped>
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.small {
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background-color: #fff;
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._title {
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position: relative;
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._li {
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position: absolute;
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bottom: 0;
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width: 100%;
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height: 48px;
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background: rgba(0, 0, 0, 0.2);
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> ul {
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display: flex;
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height: 48px;
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line-height: 48px;
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li {
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flex: 1;
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text-align: center;
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font-size: 18px;
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color: #ffffff;
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display: inline-block;
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cursor: pointer;
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}
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._active {
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background: #000000;
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}
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}
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}
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._fixed {
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position: fixed;
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top: 80px;
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z-index: 1;
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background-color: #ccc;
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}
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}
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.box {
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margin-bottom: 30px;
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._item {
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._tit {
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margin: 0;
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padding: 100px 0 60px;
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}
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._info {
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display: flex;
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._paddingr {
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padding-right: 63px;
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}
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._paddingl {
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padding-left: 63px;
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}
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._l {
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flex: 1;
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h3 {
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font-size: 18px;
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font-weight: 500;
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color: #333333;
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}
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p {
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font-size: 14px;
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font-weight: 400;
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color: #666666;
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line-height: 24px;
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}
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}
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._r {
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width: 520px;
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background: #f2f6ff;
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}
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}
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}
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._list {
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margin-top: 86px;
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> ul {
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display: flex;
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li {
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width: calc(100% / 6);
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padding: 0 11px;
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._head {
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margin: 5px 0;
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font-size: 17px;
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font-family: Source Han Sans CN;
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font-weight: 500;
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color: #333333;
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line-height: 19px;
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}
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._detail {
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font-size: 15px;
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font-family: Source Han Sans CN;
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font-weight: 400;
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color: #666666;
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line-height: 19px;
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}
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}
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}
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._liBtn {
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margin-top: 36px;
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}
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}
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}
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}
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</style> |