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哪错了为什么输出不了呢？

来源：4-10 编程练习

qq_GreenOrRed_0

2016-08-12 15:47

<!DOCTYPE HTML>

<html >

<head>

<title>流程控制语句</title>

//第一步把之前的数据写成一个数组的形式,定义变量为 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"]];

//第一次筛选，找出都是大一的信息

for(var i=0;i<infos.length;++i){

if((infos[i][4]=="大一")&&(infos[i][2]=="女")){

document.write(infos[i]);

}

//第二次筛选，找出都是女生的信息

</script>

</head>

<body>

</body>

</html>

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