具體如下：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 <html> <head> <title>Background Color Changer</title> <script language = JavaScript> <!-- function BG_yellow() { document.bgColor = 0xFFFF00 } function BG_thistle() { document.bgColor = 0xD8BFD8 } function BG_plum() { document.bgColor = 0xDDA0DD } function BG_red() { document.bgColor = 0xFF0000 } //--> </script> </head> <body > <center> <form> <font face="comic sans ms"> <br> <h1> Set the background color </h1> <br> <input type = button value = "Make background Yellow " onclick = "BG_yellow()"> <br> <br> <input type = button value = "Make background Thistle" onclick = "BG_thistle()"> <br> <br> <input type = button value = "Make background Plum" onclick = "BG_plum()"> <br> <br> <input type = button value = "Make background Red" onclick = "BG_red()"> </font> </form> </center> </body> </html>