var arr=new Array();

var arr=[

['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<arr.length;i++)

{

if(arr[i][1]!="女")

{

arr.splice(i,1);

}

}

document.write(arr);