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自己写的_top、_parent以及对iframe和frameset的理解

iframe可以写在<body>标签里,如<body><iframe src="http://www.mamicode.com/xxx"  name="xxx" style="width:100%;height:500px;"/></body>    iframe标签要成对,不然后面的标签不起作用

frameset不可以写在<body>标签里,如:

<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
	</head>
	 <frameset rows="50%,25%,*"> 
	 	<frame name="frameset_target" src="http://www.mamicode.com/HelloWorld.html" noresize="noresize"/> 
	 	<frame src="http://www.mamicode.com/hello.java"/> 
	 	<frame src="http://www.mamicode.com/hello.java"/> 
	 </frameset>
</html>

 

 

-----------------------------------------------------------------------------------------------iframe

	<h5>iframe__frameset</h5> 
	<p><a href="http://www.mamicode.com/V1.jpg" target="iframe_target">iframe</a></p> 
	<p><a href="http://www.mamicode.com/V1.jpg" target="frameset_target">frameset</a></p>  
	<iframe src="http://www.mamicode.com/hello.java" name="iframe_target" style="width:100%;height:500px;"/>

-----------------------------------------------------------------------------------------------frameset

注:必须先将frameset所在页面打开,然后,再点击里面的超链接到frame里的标签,(frameset的子标签是frame,不是iframe)

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
	</head>
	 <frameset rows="50%,25%,*"> 
	 	<frame name="frameset_target" src="http://www.mamicode.com/HelloWorld.html" noresize="noresize"/> 
	 	<frame src="http://www.mamicode.com/hello.java"/> 
	 	<frame src="http://www.mamicode.com/hello.java"/> 
	 </frameset>
</html>

  

-----------------------------------------------------------------------------------------------top和parent

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
	<body>
		<a href="http://www.mamicode.com/a_main.html">主界面</a>
	</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
	</head>
	     <frameset rows="20%,*">
	     	<!--noresize属性规定用户无法调整框架的大小,默认是可以通过拖动框架之间的墙壁来改变框架大小-->
			<frame src="http://www.mamicode.com/a_top.html" noresize="noresize"/>	  
			<frame src="http://www.mamicode.com/a_bottom.html" name="bottom" noresize="noresize"/>	
	     </frameset>
</html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
	</head>
	<body>
	this is top.html     
	</body>   
</html>   
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
	</head>
	     <frameset cols="20%,*">
	     	<!--noresize属性规定用户无法调整框架的大小,默认是可以通过拖动框架之间的墙壁来改变框架大小-->
			<frame src="http://www.mamicode.com/a_left.html" noresize="noresize"/>	  
			<frame src="http://www.mamicode.com/a_right.html" name="bottom" noresize="noresize"/>	
	     </frameset>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
	</head>
	<body>
	this is left.html
	</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
		<title></title>
	</head>
	<body>
	this is right.html 
	<a href="http://www.mamicode.com/a_target_test1.html" target="bottom">test1</a>
	<a href="http://www.mamicode.com/a_target_test1.html" target="_parent">_parent</a>
	<a href="http://www.mamicode.com/a_target_test1.html" target="_top">_top</a>
	</body>
</html>

  

自己写的_top、_parent以及对iframe和frameset的理解