个回答

• 超暖系呆少年i

  2018-04-26 17:53:03

  已采纳

   //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

    switch(infos)

    {

            for (var i = 0; i<infos.length; i++) {

            if(infos[i][3] == "大一" && infos[i][1] == "女"){  //筛选3:大一  1 ：性别女

           document.write("大一的女生的名字：" + infos[i][0] + "<br/>")

            }

    }

  }

  
  

  1

• 简单简同学

  2018-07-24 15:56:26

  不懂switch(infos)在里面起什么作用的

  0