源代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>编程字典</title> </head> <body> <frameset cols="25%,*,25%"> <frame src="frame_a.htm"> <frame src="frame_b.htm"> <frame src="frame_c.htm"> </frameset> </body> </html>
运行结果