简单的代码
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<10;i++){
if(infos[i][3]=="大一" && infos[i][1]=="女"){
document.write(infos[i][0]);
}
}