执行不了,求帮忙
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']]
switch( infos[i][2]&&infos[i][4] ){
case "女"&& "大一":
document.write("女生的名字是:"+ infos[i][0]+"<br/>")
};