求助 为啥这段代码写出来没显示呢 代码如下
来源：4-10 编程练习
是骆驼啊
2016-12-26 11:40
<!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++){
var stu=Infos[i];
if(stu[3]==="大一"&&stu[1]==="女"){
console.log(stu);
}
}
</script>
</head>
<body>
</body>
</html>
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2回答
-
- qq_知秋落葉_0
- 2017-12-21 11:26:54
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(infos[i][0]+"<br/>"); } } -
- 网瘾少年学编程
- 2016-12-26 12:18:01
var stu=Infos[i];这段错了，JS是区分大小写的 你定义的是“infos”，而你此处写的是“Infos”，会报错提示未定义Infos。
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