那這樣寫(xiě)對(duì)嗎？
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>二維數(shù)組</title>
<script type="text/javascript">
var mynum=[[1,2,3][1,2,3,4,5,6]]=6*21;
</script>
</head>
<body>
</body>
</html>
2019-02-26
能用一維數(shù)組解決的，盡量不要考慮那么復(fù)雜，實(shí)際開(kāi)發(fā)中傾向于便于理解和維護(hù)，寫(xiě)個(gè)for就好了