答案：两种方式，仅供参考！

源自：4-10 编程练习

<!DOCTYPE HTML>

<html >

<head>

<title>流程控制语句</title>

var infos = [["namea","女","25","大一"],["nameb","男","24","大四"],["namec","男","23","大三"],["named","女","24","大一"]];

//第一种方式

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

//infos[count].indexOf:数组中是否包含指定字符串

var isindexOf = infos[count].indexOf("大一");

var isindexOf2 = infos[count].indexOf("女");

//结果!-1说明包含

if(isindexOf!=-1 && isindexOf2!=-1){//说明包含大一女

document.write(infos[count]+"<br/>");

}

for(var count2 = 0;count2< infos.length;count2++){

if(infos[count2][1]=="女" && infos[count2][3]=="大一"){

document.write(infos[count2]+"<br/>");

}

</script>

</head>

<body>

</body>

</html>

提问者：王帅_ 2023-04-11 14:38