4-10哪个编程练习怎么做啊？，

个回答

呵伟呵呵

2017-11-09 15:34:39

已采纳

<!DOCTYPE HTML>
<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>流程控制语句</title>
<script type="text/javascript">
var infos = [
['小A','女',21,'大一'],
['小B','男',23,'大三'],
['小C','男',24,'大四'],
['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']
];
for(var i = 0; i < infos.length; i++) {
if(infos[i][3] == "大一" && infos[i][1] == "女") {
document.write(infos[i][0] + "<br />");
}
}
</script>
</head>
<body>
</body>
</html>

0

木子955: 2019-01-08 19:02:38

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']];

var names = new Array();
for(var i=0;i<j;i++){	 
	names[i] = new Array();	       
	for(var j=0; j<k; j++){	       		
	    names[i][j] = "";	       
	}	 
 }
 
//第一次筛选，找出都是大一的信息			
for(var i=0;i<10;i++){
	if(infos[i][3] == '大一'){	
	    names.push(infos[i]);			 
	 } 		
}

//第二次筛选，找出都是女生的信息			
for(var i=0; i<names.length; i++){			    
   if(names[i][1] == '女'){			      
      document.write(names[i][0]);			
    }			
}

木子955: 2019-01-08 18:58:55

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']];	       var names = new Array();	       for(var i=0;i<j;i++){	       	names[i] = new Array();	       	for(var j=0; j<k; j++){	       		names[i][j] = "";	       	}	       }	      //第一次筛选，找出都是大一的信息			for(var i=0;i<10;i++){			   if(infos[i][3] == '大一'){			       names.push(infos[i]);			   } 			}			 			//第二次筛选，找出都是女生的信息			for(var i=0; i<names.length; i++){			    if(names[i][1] == '女'){			        document.write(names[i][0]);			    }			}

FLYTHEBEST

2018-06-07 14:47:37

var tara = [['Image Dragon ','女',21,'大一'],['小B','男',23,'大三'],['小C','男',24,'大四'],['taylor ','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'],['Jay','女',20,'大一'],['小J','男',20,'大三']];
for (t=0;t<tara.length;t++){
if(tara[t][3]=='大一' && tara[t][1]=='女'){
document.write(tara[t][0]);
}

}

0
qq_eminemjohn_03355944

2018-03-25 22:18:43

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']];
for(var i=0;i<infos.length;i++){
if(infos[i][3]=='大一'&&infos[i][1]=='女'){
document.write('读大一并且是女生的有:'+infos[i][0]+'<br>');
}
}

0
极简小白

2017-11-13 18:08:12

var infos [
{name:'小A',sex:'女',age:'21',cent;"大一"},
{name:'小B',sex:'女',age:'21',cent;"大2"},
{name:'小C',sex:'女',age:'21',cent;"大一"},
{name:'小D',sex:'女',age:'21',cent;"大一"}
]

//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].cent=='大一'){
console.log(infos[i])
if(infos[i].sex=='女'){
console.log(infos[i].name)
}
}
}

1