函數(shù)sortNum問(wèn)題
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Array對(duì)象 </title>
<script type="text/javascript">
?? function sortNum(a,b) {
??? return b-a;
?? }
var myarr = new Array("80","16","50","6","100","1");
document.write(myarr.sort(sortNum));
</script>
</head>
<body>
</body>
</html>
?? 為什么 最后那個(gè)sortNum不加一個(gè)（）?? 他不算是函數(shù)調(diào)用嗎？
2016-11-23
不是，它是以函數(shù)作為參數(shù)放進(jìn)sort()里面