求解 不知道错哪了 第二个筛选女的 只会显示最后一条
var infos=new Array();
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"]];
function er(){
for(var i=0;i<infos.length;i++)
{
if(infos[i][3]=="大一")
{
var zai=new Array();
zai.push(infos[i]);
document.write(zai+"<br>");
}
}
document.write("<br>");
for(var j=0;j<zai.length;j++)
{
if(zai[j][1]=="女")
{
document.write(zai[j]+"<br>");
}
}
}
er();