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dom 筛选器

<!doctype html><html><head><meta charset="utf-8"><title>无标题文档</title><style>dd {        cursor: pointer;    }</style><script type="text/javascript">window.onload = function (){    var odl = document.getElementsByTagName(‘dl‘);    var odiv = document.getElementById(‘div1‘);    var location = ‘‘;    var position = ‘‘;    var salary = ‘‘;        for(var i = 0; i < odl.length; i++)    {        fn(i);    }        function fn(n)    {        var odd = odl[n].getElementsByTagName(‘dd‘);        for(var i = 0; i < odd.length; i++ )        {            odd[i].onclick = function ()            {                switch(n)                {                    case 0:                    location = this.innerHTML + ‘ ‘;                    break;                    case 1:                    position = this.innerHTML + ‘ ‘;                    break;                    case 2:                    salary = this.innerHTML + ‘ ‘;                    break;                }                odiv.innerHTML  = location + position + salary;            };        }    }}</script></head><body>    <dl>        <dt>地区</dt>        <dd>东城</dd>        <dd>西城</dd>        <dd>朝阳</dd>        <dd>昌平</dd>    </dl>    <dl>        <dt>职位</dt>        <dd>美工设计</dd>        <dd>前端工程师</dd>        <dd>后台开发</dd>    </dl>    <dl>        <dt>薪资</dt>        <dd>4000</dd>        <dd>5000</dd>        <dd>6000</dd>    </dl>    <div id="div1"></div></body></html>

 

dom 筛选器