<script type="text/javascript"> //第一步把之前的数据写成一个数组的形式,定义变量为 infos var infos=[["小A","女",21,"大一"],["小B","男",23,"大三"], ["小C","男",24,"大四"],["小D","女",21,"大一"],["小E","女",22,"大四"], ["小F","男",21,"大一"],["小G","女",22,"大二"],["小H","女",20,"大三"], ["小I","女",20,"大一"],["小J","男",20,"大三"]]; //第一次筛选,找出都是大一的信息 for(var i=0;i<infos.length;i++) { if(infos[i][3]=="大一") { document.write("大一的学生如下:"+infor[i][3]+"<br />"); } } //第二次筛选,找出都是女生的信息 for(var i=0;i<infos.length;i++) { if(infos[i].grade=="大一"&&infos[i].sex=="女") { document.write("大一女生:"+infos[i].name+"<br/>"); } } </script>
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