鍦ㄥ涔?fàn)javascript涓鍒欐槸緇忓父浣跨敤鐨?鍦ㄦ鍒欎腑鐨勭壒孌婄鍙?闇瑕佽漿涔夌瓑,涓嬮潰瀵規(guī)鍒欎腑鐨勮漿涔夊拰鐗規(guī)畩瀛楃榪涜浠嬬粛
棣栧厛鏄厓瀛楃,鎰忔濇槸,鍦ㄤ嬌鐢ㄨ繖浜涘瓧絎︽椂,蹇呴』浣跨敤杞箟瀛楃,璐熻矗浼?xì)鍑洪?
鍏冨瓧絎︽湁:()[]{}\^$|?*
浠諱綍鏃跺欑敤鍦ㄦ鍒欒〃杈懼紡涓敤鍒頒互涓婂瓧絎﹀繀欏昏繘琛岃漿涔?
涓句緥:鍋囧鍖歸厤?榪欎釜瀛楃
var re = /\?/;
鎴栬?br />
var re = new RegExp("\\?");
姝ｅ垯涓殑鐗規(guī)畩絎﹀彿錛?nbsp;
娉ㄦ剰鍒扮浜屼釜姝ｅ垯,褰撶敤鍒癨鐨勬椂鍊?澶氱敤浜哱鏉ヨ繘琛岃漿涔塡 鏈鍚庤揪鍒頒袱涓猏\,鍙仛鍙岄噸杞箟
鍏舵 鐗規(guī)畩絎﹀彿
鍦ㄥ垯浼?xì)鍔熻兘鍒欎腑鍙互鋴社敤ASCII浠ｇ爜涔熷彲浠ョ敤Unicode浠ｇ爜.
褰撶敤瀛楃鐢ㄥ崄鍏繘鍒惰〃紺烘椂,鍦ㄥ瓧絎︾鍚嶅繀欏誨姞涓奬x
褰撶敤鍏繘鍒舵椂,鍦ㄧ傳搴滃墠蹇呴』鍔犱笂 \
褰撶敤Unicode緙栫爜琛ㄧず鏄繀欏誨姞涓?\
榪樻湁鍏跺畠涓浜涚壒孌婄鍙?br />
瀛楃 璇存槑
\t 鍒惰〃絎?br />
\n 鎹㈣絎?br />
\r 鍥炶濺絎?br />
\a 鎹㈤〉絎?br />
\e alert瀛楃
\cX escape瀛楃
\b 涓嶺鐩稿搴旂殑瀛楃
\v 鍥為瀛楃
\0 絀哄瓧絎?br />
濡傛灉鐢≧egExp鏋勯犲嚱鏁版潵浣跨敤瀹冧滑,鍒欏繀欏諱嬌鐢ㄥ弻閲嶈漿涔?
浠ヤ笂灝辨槸姝ｅ垯涓殑鐗規(guī)畩絎﹀彿
姝ｅ垯琛ㄨ揪涔嬪瓧絎︾被錛?br />
鍏堣涓涓嬪瓧絎︾被鐨勬剰鎬?瀛楃綾繪槸鐢ㄤ簬嫻嬭瘯鐨勫瓧絎︾粍鍚?瀛楃綾繪槸鏀懼埌涓嫭鍙穂]涓殑,鍙互鏈夋晥鐨勫憡璇夋鍒欏幓鍖歸厤.鍦ㄥ瓧絎︾被鍙堝垎涓轟簲涓畝鍗曠殑綾?鍒嗗埆璇翠竴涓?br />
1.綆鍗曠被
綆鍗曠被灝辨槸浣犳兂瑕佸尮閰嶇殑瀛楁瘝緇?br />
涓句緥璇存槑
var _class = /[abc]de/gi;
涓婇潰鐨勪竴涓瓧絎︾被灝辨槸涓涓畝鍗曠殑綾?鍙互鍖歸厤ade,bde,cde.涓夌,鍚庨潰鐨刧鍜宨鍒嗗埆鏄叏灞鍜屼笉鍖哄垎澶у皬鍐?
鍐嶇畝鍗曠被涓繕鍙互浣跨敤unicode緙栫爜
var _class = /[a\u0062c]de/gi;
榪欎釜璺熶笂闈㈢殑涓鏍?鍙互鍖歸厤ade,bde,cde.涓夌,鍚庨潰鐨刧鍜宨鍒嗗埆鏄叏灞鍜屼笉鍖哄垎澶у皬鍐?
2.璐熷悜綾?br />
璐熷悜綾誨氨鏄綘瑕佹帓闄ょ殑瀛楁瘝,鐢ㄤ笂灝栧彿(^)琛ㄧず璐熷悜綾?br />
涓句緥//www.forasp.cn 杞澆璇鋒敞鏄?br />
var _class = /[^abc]de/gi;
鐢ㄤ簡璐熷悜綾籢灝辨帓闄や簡a,b,c涓変釜寮澶寸殑瀛楃涓?鍗?ade,bde,cde閮戒笉鍖歸厤
3.鑼冨洿綾?br />
鑼冨洿綾誨嵆鎸囧畾浠庝竴涓瓧絎﹀埌鍙︿竴涓瓧絎︾殑鑼冨洿,鐢ㄤ腑鏉?-)琛ㄧず.
涓句緥
var _class = /[a-c]de/gi;//榪欏氨鏄〃紺轟粠a鍒癱,鍗?abc閮藉尮閰?br />
涓婇潰鐨勫氨鍖歸厤浜哸de,bde,cde.涓夌.涔熷彲浠ュ姞涓婅礋鍚戠被琛ㄧず涓嶅尮閰?br />
var _class = /[^a-c]de/gi;//榪欏氨鏄〃紺轟粠a鍒癱,鍗?abc閮戒笉鍖歸厤
4.緇勫悎綾?br />
緇勫悎綾繪槸鏈夊嚑縐嶅叾瀹冪被鐨勭粍鍚堣屽悎鎴愮殑瀛楃綾?
涓句緥
var _class = /[1-9a-c]/gi;
涓婇潰鐨勮〃杈懼紡灝辨槸1-9鎴栬卆-c鍧囪兘鍖歸厤,鍒椾婦1,2,3,4,5,6,7,8,9,a,b,c
鍦ㄦ 瑕佹敞鎰忕殑鏄瓧絎﹀唴閮ㄧ被涔嬮棿涓嶈兘鏈夌┖鏍?榪樻湁涓嶈兘鏈変氦鍙?
5.棰勫畾涔夌被//www.forasp.cn 杞澆璇鋒敞鏄?br />
棰勫畾涔夌被灝辨槸灝嗗鏉傜殑緇勫悎綾婚瀹氫箟鎴愮壒瀹氱殑浠ｇ爜.
鍒椾婦浜唈avascrip涓殑棰勫畾涔夌被
浠ｇ爜 絳夊悓浜?nbsp; 鍖歸厤
. [^\n\r] 鍑轟簡鎹㈣鍜屽洖杞︿互澶栫殑浠諱綍瀛楃
\d [0-9] 鏁板瓧
\D [^0-9] 闈炴暟瀛?br />
\s [ \t\n\xB\f\r] 絀虹櫧瀛楃
\S [^ \t\n\xB\f\r] 闈炵┖鐧藉瓧絎?br />
\w [a-zA-Z_0-9] 鍗曡瘝瀛楃,鍖呮嫭瀛楁瘝涓嬪垝綰垮拰鏁板瓧
\W [^a-zA-Z_0-9] 闈炲崟璇嶅瓧絎?/font>
浠ヤ笂灝辨槸甯哥敤鐨勬鍒欒〃杈懼紡鐨勫瓧絎︾被,甯哥敤璋ㄨ
====================姝ｅ垯琛ㄨ揪涔嬮噺璇?/font>
姝ｅ垯琛ㄨ揪寮忎腑鐨勯噺璇?瑙勫畾浜嗙壒瀹氱殑瀛楃涓插嚭鐜扮殑嬈℃暟.褰撴寚瀹氭煇涓ā寮忓簲褰撳嚭鐜扮殑鍑哄敭鏃?鍙互鎸囧畾紜ф暟閲?
鍙互璇村垎涓轟袱綾婚噺璇?br />
1.綆鍗曢噺璇?濡備笅鏍囪瘑
浠ｇ爜 鎻忚堪
? 鍑虹幇闆舵鎴栬呬竴嬈?br />
* 鍑虹幇浠繪剰嬈℃暟
+ 鑷沖皯鍑虹幇涓嬈?br />
{n} 涓瀹氬嚭鐜皀嬈?br />
{n,m} 鑷沖皯鍑虹幇n嬈℃渶澶氬嚭鐜癿嬈?br />
{n,} 鑷沖皯鍑虹幇n嬈?br />
涓句緥璇存槑浠ヤ笂鐨勬爣璇?gi鏄叏灞閮ㄥ垎澶у皬鍐?涓嬮潰灝變笉璇磄i浜?
var foraspcn = /[ab]?c/gi;//鍖歸厤 c,ac,bc
var foraspcn = /[ab]*c/gi;//鍖歸厤 c,aac,bbc...
var foraspcn = /[ab]+c/gi;//鍖歸厤 ac,bc,aac,bbc..
var foraspcn = /[ab]{1}c/gi;//鍖歸厤 ac,bc
var foraspcn = /[ab]{1,2}c/gi;//鍖歸厤 ac,bc,aac,bbc
var foraspcn = /[ab]{1,}c/gi;//鍖歸厤 ac,bc,aac,bbc...
鐪嬬湅鐪嬫噦娌℃湁,鏈夌殑鏃跺欐湁鐨勬槸鐩哥瓑鐨勬瘮濡?br />
?灝辯瓑浜巤0,1}
*絳変簬{0,}
+絳変簬{1,}
2.璐┆鐨?鎯版х殑,鏀厤鎬х殑閲忚瘝
棣栧厛瑙ｉ噴涓涓嬩笁縐嶉噺璇?
璐┆閲忚瘝灝辨槸鍏堢湅鏁翠釜瀛楃涓插笀鍌呭尮閰?濡傛灉娌℃湁,鍒欏幓鎺夊瓧絎︿覆鏈鍚庝竴涓瓧絎?鍐嶆鍖歸厤.涓鐩村埌鍙戠幇鏈鍚庝竴涓尮閰嶆垨鑰呭瓧絎︿覆涓嶅墿涓嬩換浣曞瓧絎?鐩墠鐨勯噺璇嶉兘鏄椽濠殑.
鎯版ч噺璇嶆槸棣栧厛鐪嬬涓涓瓧絎︽槸鍚﹀尮閰?濡傛灉鍗曠嫭榪欎竴涓瓧絎︿笉澶?鍒欒鍏ヤ笅涓涓?涓庣粍鎴愪袱涓瓧絎﹀幓鍖歸厤,濡傛灉娌℃湁鍙戠幇鍐嶆璇誨彇涓嬩竴涓瓧絎?鐩村埌鍙戠幇鍖歸厤鎴栬呮暣涓瓧絎︿覆閮芥病鏈夊尮閰?鎯版у拰璐┆姝ｅソ鐩稿弽.
鏀厤閲忚瘝鎿﹀ソ闅捐繃鏃跺尮閰嶆暣涓瓧絎︿覆,濡傛灉涓嶅尮閰嶅垯涓嶅啀灝濊瘯.鏀厤閲忚瘝灝辨槸鏁翠綋鍖歸厤涓嬈?$hidden$
璐┆鐨?鎯版х殑,鏀厤鎬х殑閲忚瘝 琛ㄥ涓?br />
璐┆鐨?鎯版х殑 鏀厤鎬?鎻忚堪
? ?? ?+ 闆舵鎴栬呬竴嬈″嚭鐜?br />
* *? *+ 闆舵鎴栬呭嬈″嚭鐜?br />
+ +? ++ 鑷沖皯涓嬈″嚭鐜?br />
{n} {n}? {n}+ 姝ｅソn嬈″嚭鐜?br />
{n,m} {n,m}? {n,m}+鑷沖皯n嬈″嚭鐜?鑷沖m嬈″嚭鐜?br />
{n,} {n,}? {n,}+ 鑷沖皯n嬈″嚭鐜?/font>
浠ヤ笂灝辨槸姝ｅ垯涓噺璇嶇殑鐩稿叧鍐呭
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