4回答

• 

  1frgdhf

  2019-08-08 11:36:20

   for(var i=0;i<infos.length;i++){
        if(infos[i][3]=="大一"&&infos[i][1]=='女'){
            document.write(infos[i] +'<br>');
  
        }
    }

  0 0
• 

  慕运维9212078

  2016-10-27 19:00:25

      对于二维数组，一脸懵逼。T.T

    如果学会了JavaScript，连带着函数等等都学会了一些。

  0 0
• 

  冒牌小冬瓜

  2016-10-26 09:00:23

  var arr = [['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']];

  document.write(arr.length);

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

  {

       if(arr[i][3] == '大一' && arr[i][1] == '女')

       {

           document.write(arr[i][0] + "<br>");

        }

  }

  
  

  0 0
• 

  慕慕6927130

  2016-08-19 16:21:11

  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' && infos[i][1] == '女')
      {
          document.write( infos[i][0] );
      }
  }

  0 0