<!DOCTYPE HTML><html ><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>流程控制语句</title><script type="text/javascript"> var infos = new Array[['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]+"<br/>"); } else { alert("没有"); }} </script></head><body></body></html>为什么输不出结果？求教！！
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