<!DOCTYPE HTML>
<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>函数</title>
<script type="text/javascript">
function aa(x,y)
{
if(x>y)
{
return x;
}
else if(x<y)
{
return y;
}
else
{
return "两个数相等"；
}
}
document.write(" 5 和 4 的较大值是:"+ aa(5,4)+"<br>");
document.write(" 6 和 3 的较大值是:"+ aa(6,3) );
</script>
</head>
<body>
</body>
</html> 
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Can’t find the problem, just can’t compile the results - PHP Chinese website Q&A - Can’t find the problem, just can’t compile the results - PHP Chinese website Q&A
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return "两个数相等"； 你这句用的是中文的分号，改成英文的就行了。