沒結(jié)果，求大神
<!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=new Array();
?infos=[
?["A","女",21,"大一"],
?["B","男",23,"大三"],
?["C","男",24,"大四"],
?["D","女",21,"大一"],
?["E","女",22,"大四"],
?["F","男",21,"大一"],
?["G","女",22,"大二"],
?["H","女",20,"大三"],
?["I","女",20,"大一"],
?["J","男",20,"大三"]
?];
?//第一次篩選，找出都是大一的信息
?for(var i=0;i<infos.length;i++){
??? if(infos[i][3]=="大一"&&infos[i][1]=="女"){
? ?
?? document.write("大一女生的名字："+inofs[i][0]);
?}
?}
?//第二次篩選，找出都是女生的信息
?
?
?
</script>
</head>
<body>
</body>
</html>
2016-05-03
<!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=[
? ? ['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']
? ? ]
?//第一次篩選，找出都是大一的信息
?for( var i=0;i<infos.length;i++){
? ? if(infos[i][3]=="大一"){
? ? ? ? document.write(infos[i]+"<br>")
? ? ? ? ? ? }
? ? ? ? }
? //第二次篩選，找出都是女生的信息
? var demo=new Array();
? demo=infos;
?for(var i=0;i<demo.length;i++){ ??
if(demo[i][1]=='女'&&infos[i][3]=="大一")
{ document.write(demo[i][0]+"<br/>");}
} ? ?
??
</script>
</head>
<body>
</body>
</html>
2016-05-02
調(diào)用的數(shù)組是inofs[],而你定義的數(shù)組是infos[]
2016-05-02
好吧? 輸出時數(shù)組名寫錯了，，，，，