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web_page_production_exercises
/
0822练习js.html

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script type="text/javascript" src="lib/jquery/jquery-1.11.1.js" ></script>
		<script type="text/javascript">
			function max1(){
				var image1=document.getElementsByTagName("img")[0];
				image1.width=image1.width+5;
			}
			function min1(){
				var image2=document.getElementsByTagName("img")[0];
				image2.width=image2.width-5;
			}
		</script>
	</head>
	<body>
		<img width="300px" src="img/1d.jpg"/>
		<br />
		<input type="button" onclick="max1()" value="放大" />
		<input type="button" onclick="min1()" value="缩小" />
	</body>
</html>