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导航切换悬浮最上层

时间:2020-02-18 16:59:52      阅读:16      评论:0      收藏:0      [点我收藏+]

标签:dde   aaaaaa   lock   orien   splay   电商平台   

问题 :

在项目实际开发中会出现详情页很长 并且里边有切签,可是往往切签会挤到页面的最下面,切换时观看很不方便,为了用户体验更好些

 技术分享图片

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技术分享图片

 

解决方案:

当点击切签时使导航条置顶,切签下对应的内容从第一条展示,导航条是一个悬浮的效果,滚动条滚动到相应内容的时候导航条跟随内容

当点击切换时导航条加class ="fixed"  进行定位position:flxed;

 

技术分享图片

 

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>选项卡-vue</title>
<style>
  body{-webkit-text-size-adjust:100% !important;font-size:0.25rem;margin:0}
    p{margin:0;padding:0}
    li{list-style:none}
    .tabNav{width:100%;overflow:hidden}
    .tabNav li.active{color:#fff;background:#00B0F0}
    .nav_box{height:1rem;width:7.5rem;background:#fff;margin-top:0.3rem}
    .tab_navmenu{width:100%;height:0.86rem;display:flex;justify-content:space-between;font-size:0.3rem;background:#fff;position:relative;left:0;top:0;height:1.1rem;border-bottom:1px solid #EFEFEF}
    .tabs.fixed{top:1rem;position:fixed;z-index:100;background:#f00}
    .tabs{width:100%;display:flex;justify-content:space-between;background:#fff;position:relative;left:0;top:0}
    .tabNav li{display:inline-block;height:0.7rem;text-align:center;line-height:0.7rem;background:#efefef;border-radius:0.5rem;margin-right:0.3rem;margin:0 .2rem;width:25%}
    #header{height:1rem;line-height:1rem;text-align:center;position:fixed;;top:0;left:0;border-bottom:1px solid #ccc;width:100%;font-size:0.33rem;z-index:9999;background:#ccc}
    .div{height:1rem}
    .martop{}
    .tabCont{margin-top:.3rem}
</style>

</head>
<body>
    <div  id ="app">
        <div id =‘header‘>header</div>
        <div style=‘display:inline-block;‘>
            <div>1</div>
            <div>1</div>
            <div>1</div>
            <div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div><div>1</div>
        </div>
        <!--tab选项-->
        <div class=‘nav_box‘ >
            <div class="tabs">
                <ul class="tabNav flex_box" >
                    <li 
                        v-for =‘item,index in items‘ 
                        :data-index="index" 
                        @click=‘tabNav(index)‘
                        :class=‘{"active": index==currentTab}‘ >{{item.name}}
                    </li>
                </ul>
            </div>
        </div>
        <div class=‘tabCont‘ :current = ‘currentTab‘>
            <div v-show="currentTab==0" class=‘martop‘><div class=‘div‘>aaaaaaaaaaaaaaaaaaa</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div><div class=‘div‘>1</div></div>
            <div v-show="currentTab==1" class=‘martop‘><div class=‘div‘>bbbbbbbbbbbbbbbbbbbbb</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div><div class=‘div‘>2</div></div>
            <div v-show="currentTab==2" class=‘martop‘><div class=‘div‘>cccccccccccccccccc</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div><div class=‘div‘>3</div></div>
        </div>
<script src="zepto.min.js"></script>
<script src=‘vue2.min.js‘></script>
<script>
var vm = new Vue({
    el:#app,
    data:{
        items:[
            {name:其他成交},
            {name:"同系车型"},
            {name:"商城活动"}
        ], 
        currentTab:0, //默认第一个选中
        initNum:0,
       
    },
    created:function(){
        var initNum = 0;  
    },
    methods:{
        tabNav(index){
            var self = this;
            //赋值当前索引
            self.currentTab = index; 
            self.initNum++;
            if(self.initNum >= 1){
                $(window).scrollTop($(".nav_box").offset().top - $(".nav_box").height())
            }
        }
    },
    mounted:function(){
        var scrollNum = 0;
        $(window).scroll(function () {
            if (document.querySelector(".nav_box").getBoundingClientRect().top <= $("#header").height()) {
                $(".tabs").addClass("fixed");
            } else {
                $(".tabs").removeClass("fixed");
            }
        });
    }
})
//修改页面title
var pageTitle=document.getElementsByTagName("title")[0].innerHTML;
if(location.href.indexOf("index.html")>-1 || location.href.indexOf("html")==-1){
    document.getElementsByTagName("title")[0].innerHTML="一汽-大众商城-一汽-大众官方电商平台-只为简单汽车生活";
}
//rem自动计算
(function(doc, win) {
    var docEl = doc.documentElement,
        resizeEvt = orientationchange in window ? orientationchange : resize,
        recalc = function() {
            var clientWidth = docEl.clientWidth;
            if (!clientWidth) return;
            docEl.style.fontSize = 100 * (clientWidth / 750) + px;
        };

    if (!doc.addEventListener) return;
    win.addEventListener(resizeEvt, recalc, false);
    doc.addEventListener(DOMContentLoaded, recalc, false);
})(document, window);
</script>
</body>
</html>

 

导航切换悬浮最上层

标签:dde   aaaaaa   lock   orien   splay   电商平台   

原文:https://www.cnblogs.com/liubingyjui/p/12326641.html

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