不会写数组
这个代码怎么写
qq_苏小爷是只小都比_0
2016-10-21
3 回答
<!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">
//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 info = [
['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<10; i++){
if(infos[i][3] == '大一'){
document.write(infos[i]+'<br/>');
}
}
//第二次筛选，找出都是女生的信息
for(var i=0; i<10; i++){
if(infos[i][1] == '女'){
document.write(infos[i]+'<br>');
}
}
</script>
</head>
<body>
</body>
</html>
<!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">
//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']];
var i=0;
//第一次筛选，找出都是大一的信息
do{
if(infos[i][1]=='女'&&infos[i][3]=='大一')
{
document.write("姓名："+infos[i][0]+"<br>");
}
i=i+1;
}
while(i<10)
//第二次筛选，找出都是女生的信息
</script>
</head>
<body>
</body>
</html>
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 infos = new Array();
infos[0] = new Array('小A', '女', 21, '大一');
infos[1] = new Array('小B', '男', 23, '大三');
infos[2] = new Array('小C', '男', 24, '大四');
infos[3] = new Array('小D', '女', 21, '大一');
infos[4] = new Array('小E', '女', 22, '大四');
infos[5] = new Array('小F', '男', 21, '大一');
infos[6] = new Array('小G', '女', 22, '大二');
infos[7] = new Array('小H', '女', 20, '大三');
infos[8] = new Array('小I', '女', 20, '大一');
infos[9] = new Array('小J', '男', 20, '大三');
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