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                        課程
                    
                        /前端開發
                        
                            /JavaScript
                        
                        /JavaScript入門篇

<!DOCTYPE?HTML>
<html>
<head>
<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/>
<title>if...else</title>
??<script?type="text/javascript">
	var?score?=80;?//score變量存儲成績，初值為80
????if(score>=60)
	{
?????document.write("很棒，成績及格了。");
	}
????else
	{
	?document.write("加油，成績不及格。");
	}
??</script>
</head>
<body>
</body>
</html>