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求助為啥這段代碼寫出來沒顯示呢代碼如下

<!DOCTYPE ?HTML>

<html >

<head>

<title>流程控制語句</title>

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>

是駱駝啊

2016-12-26

源自：JavaScript進階篇 4-10

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2 回答

qq_知秋落葉_0
2017-12-21

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/>");
????}
}