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作者 Re:[問題]即時多層下拉選單 [Re:catte]
bernardvai





發文: 491
積分: 0
於 2011-06-28 09:54 user profilesend a private message to userreply to postreply to postsearch all posts byselect and copy to clipboard. 
ie only, sorry for netscape users:-)add this post to my favorite list
請貼出你在 browser 所見到的原始檔.

在ie, View --> Source
Firefox, 檢視 --> 頁面原始碼.

這個才可以較易幫你看看 javascript 出了什麼問題.

依我按你的程式估計, 你得到的原始檔. 會是以下這樣, 是可以運行的.
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=big5">
<title>Test</title>
</head>
 
<body>
<SCRIPT LANGUAGE="javascript">
function ChangeSelect(city, region){
  val = city.options[city.options.selectedIndex].value;
  if (val == 'a'){
     region.length=2;
     region.options[0].value= 'x';
     region.options[0].text=  'x';
     region.options[1].value= 'y';
     region.options[1].text=  'y';
  }
  if (val == 'b'){
     region.length=3;
     region.options[0].value= 't';
     region.options[0].text=  't';
     region.options[1].value= 'u';
     region.options[1].text=  'u';
     region.options[2].value= 'v';
     region.options[2].text=  'v';   
  }
}
 
</script>
 
<form name="selection">
<select name=city onChange="ChangeSelect(document.selection.city,document.selection.region)" size="1">
<option>==請選擇城市==</option>
<option value="a">a</option>
<option value="b">b</option>
</select><BR>
選擇您要的區域</font><br>
<SELECT name=region>
 
</SELECT> </p>
</form> 


bernardvai edited on 2011-06-28 10:13
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話題樹型展開
人氣 標題 作者 字數 發文時間
81988 [精華] [問題]即時多層下拉選單 ㄚ孝 384 2003-06-07 09:05
79083 Re:[問題]即時多層下拉選單 browser 1054 2003-06-07 18:19
76024 Re:[問題]即時多層下拉選單 x3711699 138 2004-04-08 20:41
75829 Re:[問題]即時多層下拉選單 alanting 710 2004-04-11 01:41
79068 Re:[問題]即時多層下拉選單 AdaHsu 3345 2004-04-19 12:23
76939 Re:[問題]即時多層下拉選單 tsechun 95 2004-04-21 02:01
74109 Re:[問題]即時多層下拉選單 andowson 474 2004-08-01 11:07
73826 Re:[問題]即時多層下拉選單 yingssu 663 2004-08-01 19:48
72890 Re:[問題]即時多層下拉選單 ting626 38 2004-08-25 16:57
72964 Re:[問題]即時多層下拉選單 i22616899 2298 2004-09-04 17:55
72148 Re:[問題]即時多層下拉選單 GuanChih 175 2004-09-05 18:51
72890 Re:[問題]即時多層下拉選單 jonz 873 2004-09-12 10:27
66141 Re:[問題]即時多層下拉選單 pulse 1193 2005-04-18 23:22
69939 Re:[問題]即時多層下拉選單 joshua 1019 2004-11-17 16:02
70272 Re:[問題]即時多層下拉選單 joshua 2357 2004-11-17 17:27
76523 Re:[問題]即時多層下拉選單 ㄚ孝 61 2003-06-09 08:34
76759 Re:[問題]即時多層下拉選單 browser 135 2003-06-09 09:23
68989 Re:[問題]即時多層下拉選單 Madagascar 141 2004-12-04 02:06
68784 Re:[問題]即時多層下拉選單 yannru 360 2004-12-07 16:19
68640 Re:[問題]即時多層下拉選單 Madagascar 465 2004-12-07 21:20
68645 Re:[問題]即時多層下拉選單 small3 388 2004-12-13 09:52
69023 Re:[問題]即時多層下拉選單 EPHT 3599 2004-12-18 09:45
56414 Re:[問題]即時多層下拉選單 yulie 2015 2006-06-06 12:47
56134 Re:[問題]即時多層下拉選單 yulie 102 2006-06-06 13:21
56385 Re:[問題]即時多層下拉選單 estrelas 1620 2006-06-06 18:51
47189 Re:[問題]即時多層下拉選單 minichitina 1875 2007-05-05 16:25
47089 Re:[問題]即時多層下拉選單 eidson72 4781 2007-05-16 11:48
21978 Re:[問題]即時多層下拉選單 catte 1960 2011-06-27 14:44
21861 Re:[問題]即時多層下拉選單 bernardvai 54 2011-06-27 16:56
46658 Re:[問題]即時多層下拉選單 alvin0224 309 2007-05-16 14:54
46741 Re:[問題]即時多層下拉選單 eidson72 21 2007-05-16 15:41
76343 Re:[問題]即時多層下拉選單 ㄚ孝 75 2003-06-09 14:05
76301 Re:[問題]即時多層下拉選單 jackyliu 201 2003-06-22 02:06
46193 Re:[問題]即時多層下拉選單 minichitina 188 2007-05-31 08:33
46060 Re:[問題]即時多層下拉選單 minichitina 2335 2007-06-04 08:04
46522 Re:[問題]即時多層下拉選單 minichitina 2718 2007-06-07 08:00
21991 Re:[問題]即時多層下拉選單 catte 2014 2011-06-28 03:14
21827 Re:[問題]即時多層下拉選單 bernardvai 1202 2011-06-28 09:54
21944 Re:[問題]即時多層下拉選單 catte 2970 2011-06-28 11:36
21799 Re:[問題]即時多層下拉選單 bernardvai 545 2011-06-28 14:21
21895 Re:[問題]即時多層下拉選單 catte 146 2011-06-28 17:54
21821 Re:[問題]即時多層下拉選單 bernardvai 2904 2011-06-29 09:58
21772 Re:[問題]即時多層下拉選單 catte 43 2011-06-29 21:58
21652 Re:[問題]即時多層下拉選單 bernardvai 219 2011-06-30 14:40
21473 Re:[問題]即時多層下拉選單 catte 269 2011-07-13 10:41
21545 Re:[問題]即時多層下拉選單 bernardvai 660 2011-07-13 11:34
20982 Re:[問題]即時多層下拉選單 catte 4035 2011-08-15 09:35
21215 Re:[問題]即時多層下拉選單 jk47 288 2011-08-15 11:19
76275 Re:[問題]即時多層下拉選單 mousetail 89 2003-06-22 13:06
77925 Re:[問題]即時多層下拉選單 alanting 1777 2003-06-22 23:21
76442 Re:[問題]即時多層下拉選單 alanting 87 2003-06-22 23:24
22094 Re:[問題]即時多層下拉選單 catte 54 2011-06-27 04:33
75853 Re:[問題]即時多層下拉選單 evenlin 132 2003-08-02 00:55
78014 Re:[問題]即時多層下拉選單 anthonycs 301 2003-08-02 15:43
75491 Re:[問題]即時多層下拉選單 ajax0953 232 2004-03-31 15:05
75266 Re:[問題]即時多層下拉選單 shyan68 261 2004-04-07 18:11
73693 Re:[問題]即時多層下拉選單 yafeng 122 2004-07-29 10:53
69118 Re:[問題]即時多層下拉選單 javaer 216 2004-12-20 00:40
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