JS实现选择菜单栏（配合慕课网淘宝搜索框的课程）

时间：2020-12-07 03:32:32

以下是关于实现慕课网淘宝搜索框的JS代码，不过只有选择菜单栏（其余比较容易实现）。

<!doctype html>

<html>

<head>

<!--在IE浏览器的最新版本下进行渲染-->

<meta http-equiv='Content-Type' content='text/html; charset=utf-8' />

<title>淘宝选择栏</title>

<style type="text/css">

body{font: 12px/1.5 tahoma,arial,sans-serif;}

.searchbox{position:absolute;top:200px;left:300px;}

.search-choose{float:left;position:relative;left:1px;width:55px;height:41px;overflow:hidden;background:#FFF;border-left:1px solid #F6F6F6;border-right:1px solid #e5e5e5;}

ul{list-style:none;display:block;}

ul,li{margin:0;padding:0}

.search-choose li{display:block;height:41px;line-height:41px;overflow:hidden;text-align:center;}

.search-choose li a{text-decoration: none;color:#6c6c6c;}

.search-choose .search-selected{background:#f6f6f6;display:block;}

.trigger-hover{height:auto;}

.trigger-hover li{display:block;}

</style>

</head>

<body>

    <div class='searchbox'>

        <div class='search-choose' id='search_choose'>

            <ul>

               <li id='search_1' class='search-selected'><a href='#'>宝贝</a></li>

               <li id='search_2'><a href='#'>店铺</a></li>

            </ul>

        </div>

    </div>

<!--搜索框模块-->

<!--※2搜索引擎选择模块-->

    <script>

    var flag1=true,flag=true;

    var getDOM=function(id){

        return document.getElementById(id);

    }

    var addEvent=function(id,event,fn){

        var el=getDOM(id);

        if(el.addEventListener){

            el.addEventListener(event,fn,false);

        }else if(el.attachEvent){

            el.attachEvent('on'+event,fn);

        }

    }

    addEvent('search_choose','mouseover',function(){

        if(flag1){

            this.className +=' trigger-hover';

        }

        flag1 = true;

    });

    addEvent('search_choose','mouseout',function(){

        this.className ='search-choose';

    });

    addEvent('search_1','mouseover',function(){

        if(this.className.indexOf('search-selected')<0){

            this.className +=' search-selected';

            getDOM('search_2').className='';

        }flag = true;

    });

    addEvent('search_1','mouseout',function(){

        if(flag){

            this.className ='';

        }

    });

    addEvent('search_1','click',function(){

        getDOM('search_choose').className = 'search-choose';

        flag1 = false;

        flag = false;

    });

    addEvent('search_2','mouseover',function(){

        if(this.className.indexOf('search-selected')<0){

            this.className +=' search-selected';

            getDOM('search_1').className='';

        }

        flag = true;

    });

    addEvent('search_2','mouseout',function(){

        if(flag){

            this.className ='';

        }

    });

    //交换两个li标签的内容

    addEvent('search_2','click',function(){

        var tab = getDOM('search_1').innerHTML;

        getDOM('search_1').innerHTML=getDOM('search_2').innerHTML;

        getDOM('search_2').innerHTML = tab;

        getDOM('search_choose').className = 'search-choose';

        flag = false;

    });

</script>

</body>

</html>

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