聽1聽<!DOCTYPE聽HTML聽PUBLIC聽"-//W3C//DTD聽HTML聽4.0聽Transitional//EN">
聽2聽<HTML>
聽3聽<HEAD>
聽4聽<TITLE>聽New聽Document聽</TITLE>
聽5聽<META聽NAME="Generator"聽CONTENT="EditPlus">
聽6聽<META聽NAME="Author"聽CONTENT="">
聽7聽<META聽NAME="Keywords"聽CONTENT="">
聽8聽<META聽NAME="Description"聽CONTENT="">
聽9聽<script聽language="JavaScript"聽type="text/javascript">
10聽聽聽聽聽//瀹氫箟浜嗗煄甯傜殑浜岀淮鏁扮粍錛岄噷闈㈢殑欏哄簭璺熺渷浠界殑欏哄簭鏄浉鍚岀殑銆傞氳繃selectedIndex鑾峰緱鐪佷喚鐨勪笅鏍囧兼潵寰楀埌鐩稿簲鐨勫煄甯傛暟緇?/span>
11聽聽聽聽聽var聽city=[
12聽聽聽聽聽["鍖椾含","澶╂觸","涓婃搗","閲嶅簡"],
13聽聽聽聽聽["鍗椾含","鑻忓窞","鍗楅?/span>","甯稿窞"],
14聽聽聽聽聽["紱忓窞","紱忓畨","榫欏博","鍗楀鉤"],
15聽聽聽聽聽["騫垮窞","娼槼","娼窞","婢勬搗"],
16聽聽聽聽聽["鍏板窞","鐧介摱","瀹氳タ","鏁︾厡"]
17聽聽聽聽聽];
18聽
19聽聽聽聽聽function聽getCity(){
20聽聽聽聽聽聽聽聽聽//鑾峰緱鐪佷喚涓嬫媺妗嗙殑瀵硅薄
21聽聽聽聽聽聽聽聽聽var聽sltProvince=document.form1.province;
22聽聽聽聽聽聽聽聽聽//鑾峰緱鍩庡競涓嬫媺妗嗙殑瀵硅薄
23聽聽聽聽聽聽聽聽聽var聽sltCity=document.form1.city;
24聽聽聽聽聽聽聽聽聽
25聽聽聽聽聽聽聽聽聽//寰楀埌瀵瑰簲鐪佷喚鐨勫煄甯傛暟緇?/span>
26聽聽聽聽聽聽聽聽聽var聽provinceCity=city[sltProvince.selectedIndex聽-聽1];
27聽
28聽聽聽聽聽聽聽聽聽//娓呯┖鍩庡競涓嬫媺妗嗭紝浠呯暀鎻愮ず閫夐」
29聽聽聽聽聽聽聽聽聽sltCity.length=1;
30聽
31聽聽聽聽聽聽聽聽聽//灝嗗煄甯傛暟緇勪腑鐨勫煎~鍏呭埌鍩庡競涓嬫媺妗嗕腑
32聽聽聽聽聽聽聽聽聽for(var聽i=0;i<provinceCity.length;i++){
33聽聽聽聽聽聽聽聽聽聽聽聽聽sltCity[i+1]=new聽Option(provinceCity[i],provinceCity[i]);
34聽聽聽聽聽聽聽聽聽}
35聽聽聽聽聽}
36聽</script>
37聽</HEAD>
38聽
39聽<BODY>
40聽<FORM聽METHOD=POST聽ACTION=""聽name="form1">
41聽聽聽聽聽聽聽聽聽<SELECT聽NAME="province"聽onChange="getCity()">
42聽聽聽聽聽聽聽聽聽聽聽聽聽<OPTION聽VALUE="0">璇烽夋嫨鎵鍦ㄧ渷浠鉸?/span></OPTION>
43聽聽聽聽聽聽聽聽聽聽聽聽聽<OPTION聽VALUE="鐩磋緰甯?/span>">鐩磋緰甯偮?/span></OPTION>
44聽聽聽聽聽聽聽聽聽聽聽聽聽<OPTION聽VALUE="姹熻嫃鐪?/span>">姹熻嫃鐪伮?/span></OPTION>
45聽聽聽聽聽聽聽聽聽聽聽聽聽<OPTION聽VALUE="紱忓緩鐪?/span>">紱忓緩鐪伮?/span></OPTION>
46聽聽聽聽聽聽聽聽聽聽聽聽聽<OPTION聽VALUE="騫夸笢鐪?/span>">騫夸笢鐪伮?/span></OPTION>
47聽聽聽聽聽聽聽聽聽聽聽聽聽<OPTION聽VALUE="鐢樿們鐪?/span>">鐢樿們鐪伮?/span></OPTION>
48聽聽聽聽聽聽聽聽聽</SELECT>
49聽聽聽聽聽聽聽聽聽<SELECT聽NAME="city">
50聽聽聽聽聽聽聽聽聽聽聽聽聽<OPTION聽VALUE="0">璇烽夋嫨鎵鍦ㄥ煄甯偮?/span></OPTION>
51聽聽聽聽聽聽聽聽聽</SELECT>
52聽聽聽聽聽</FORM>
53聽</BODY>
54聽</HTML>
55聽
榪欐浠g爜姣旇緝綆鍗曘?br />
濡傛灉瀵筳s涓嶅ぇ鐔熸倝錛屽彲浠ョ湅鐪嬩笅闈㈠叧浜巎s澶勭悊select瀵硅薄鐨勫唴瀹癸細
1銆佷嬌鐢╯electedIndex灞炴ц幏鍙栧綋鍓嶉夐」鐨勭儲寮?br />聽聽聽 涓嬫媺妗嗙殑閫夐」鏄竴涓嚎鎬ф暟緇勶紝姣忎釜閫夐」閮芥湁涓涓儲寮曪紝selectedIndex琛ㄧず褰撳墠琚変腑鐨勯夐」鐨勭儲寮曞彿銆傜粨鍚坥ptions灞炴э紝鍙互寰楀埌琚変腑鐨刼ption瀵硅薄錛屼粠鑰屽鍏跺仛榪涗竴姝ョ殑澶勭悊銆傚綋涓嬫媺妗嗗彲澶氶夋椂錛宻electedIndex灞炴ц繑鍥炵涓涓閫変腑鐨勭儲寮曘?br />聽聽聽 selectedIndex鏄釜鍙鐨勫睘鎬э紝鎯蟲妸閫氳繃绱㈠紩鎸囧畾鐨勪笅鎷夋鐨勯」璁劇疆涓洪変腑鐘舵侊紝鍙互璁劇疆option瀵硅薄鐨剆elected=true鏉ュ疄鐜般?br />
2銆佷負select瀵硅薄娣誨姞涓涓夐」
聽聽聽 sltCity[i+1]=new聽Option(provinceCity[i],provinceCity[i]);
聽聽聽 new聽Option(provinceCity[i],provinceCity[i])琛ㄧず鍒涘緩涓涓間負provinceCity[i]錛屾枃鏈負provinceCity[i]鐨刼ption瀵硅薄錛?/span>sltCity鏄〉闈笂鐨刢ity瀵硅薄錛?/span>i+1鎸囧畾鏂版坊閫夐」鐨勪綅緗?br />
3銆佹竻絀轟竴涓猻elect瀵硅薄
聽聽聽 瑕佸皢涓嬫媺妗嗙殑鎵鏈夐夐」鍒犻櫎鏈変袱縐嶆柟娉曪紝
聽聽聽 絎竴縐嶆柟娉曞氨鏄亶鍘嗗垹闄わ細
聽聽聽 1聽var聽l=myselect.length;
2聽for(var聽i=0;i<l;i++){
3聽聽聽聽myselect.options[i]=null;
4聽}
聽聽聽 絎簩縐嶆柟娉曟瘮杈冪畝鍗曪紝鍥犳涓鑸兘浣跨敤姝ゆ柟娉曪細
myselect.length=0;

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