iframe可以写在<body>标签里，如<body><iframe src="xxx" name="xxx" style="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="./HelloWorld.html" noresize="noresize"/> <frame src="/hello.java"/> <frame src="/hello.java"/> </frameset> </html>
-----------------------------------------------------------------------------------------------iframe
<h5>iframe__frameset</h5> <p><a href="V1.jpg" target="iframe_target">iframe</a></p> <p><a href="V1.jpg" target="frameset_target">frameset</a></p> <iframe src="/hello.java" name="iframe_target" style="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="./HelloWorld.html" noresize="noresize"/> <frame src="/hello.java"/> <frame src="/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="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="a_top.html" noresize="noresize"/> <frame src="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="a_left.html" noresize="noresize"/> <frame src="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="a_target_test1.html" target="bottom">test1</a> <a href="a_target_test1.html" target="_parent">_parent</a> <a href="a_target_test1.html" target="_top">_top</a> </body> </html>