求大神幫忙看看，為什么這個代碼只輸出一個結(jié)果
<!DOCTYPE? HTML>
<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>流程控制語句</title>
<script type="text/javascript">
?//第一步把之前的數(shù)據(jù)寫成一個數(shù)組的形式,定義變量為 infos
var infos=[["大一","大三","大四","大一","大四","大一","大二","大三","大一","大三"],["女","男","男","女","女","男","女","女","女","男"],["小A","小B","小C","小D","小E","小F","小G","小H","小I","小J"]]
?//第一次篩選，找出都是大一的信息
for(var i=0;i<infos.length;i++){
? ? if(infos[0][i]=="大一"){
? ? ? ? ? ? if(infos[1][i]=="女"){
? ? ? ? ? ? ? ? document.write(infos[2][i]+"<br>");
? ? ? ? ? ? }
? ? ? ??
}
}
??
</script>
</head>
<body>
</body>
</html>
2022-04-15
因為infos.length=3，你只循環(huán)了i=0，1，2三個數(shù)，所以只有1個結(jié)果