问答详情
源自：4-10 编程练习

求助 为啥这段代码写出来没显示呢 代码如下

<!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>


提问者：是骆驼啊 2016-12-26 11:40

个回答

  • 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/>");
    }
}


    0
  • 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。


    0