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web_page_production_exercises
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0822练习jq.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 da(){
				$("#tupian").css("width",function(){
				   this.width+=5;
				});
			}
			function xiao(){
				$("#tupian").css("width",function(){
				   this.width-=5;
				});
			}
		</script>
	</head>
	<body>
		<img width="300px" src="img/1d.jpg" id="tupian"/>
		<br />
		<input type="button" id="da" value="放大" onclick="da()" />
		<input type="button" id="xiao" value="缩小" onclick="xiao()" />
	</body>
</html>