<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script type="text/javascript">
var arr=[[1,2,3,4,5],[21,22,100,24,25],[31,132,33,34,35]];
document.write("arr的元素：",arr,"<br>")
var a=arr[0][0] //把0号数组元素关到小黑屋
for (var i=0;i<arr.length;i++){
for (var j=0;j<arr[i].length;j++){
if (arr[i][j]>a) {
var a=arr[i][j] //将数组中i号的值赋值给小黑屋
}
}
}
document.write(a)
</script>
</head>
<body>
</body>
</html>
返回值：132
导入函数模块
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script type="text/javascript">
var arr=[[1,2,333,4,5],[21,22,100,24,25],[31,132,33,34,35]];
document.write("arr的元素：",arr,"<br>")
function zdj(arr){
var a=arr[0][0] //把0号数组元素关到小黑屋
for (var i=0;i<arr.length;i++){
for (var j=0;j<arr[i].length;j++){
if (arr[i][j]>a) {
a=arr[i][j]; //将数组中i号的值赋值给小黑屋
};
};
};
return a;
}
document.write(zdj(arr))
</script>
</head>
<body>
</body>
</html>
返回值：333