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鎴戜滑鍦↗avaScript 涓壘涓嶅埌璇ユ柟娉曪紝鎴戜滑鍙互鍐欎竴涓嚱鏁版潵瀹炵幇鍘繪帀瀛楃涓茬殑鍓嶅悗絀虹櫧銆?br>
榪欎釜鍑芥暟鏄細
String.prototype.Trim = function() { return this.replace(/(^\s*)|(\s*$)/g, ""); }
function ppp(){
var a=" 888 ";
alert(a.Trim());
}
榪欎釜渚嬪瓙涓幓鎺変簡888 鍓嶅悗鐨勭┖鐧?br>
涓嬮潰瀵硅繖涓緥瀛愯繘琛屾洿璇︾粏瑙i噴錛?br>
棣栧厛錛?replace( ,"")鍑芥暟灝辨槸鐢ㄥ悗闈㈢殑絀哄瓧絎︿覆錛屽湪鏇挎崲鍓嶉潰鎵鎸囧畾鐨勫瓧絎?br>/(^\s*)|(\s*$)/g, ""
/鏄鍒欒〃杈懼紡鍖歸厤鐨勮娉曪細
姝e垯琛ㄨ揪寮忓璞¤鏄?br>璇硶1錛?br> var regularexpression=/pattern/[switch]
璇硶 2
var regularexpression = new RegExp("pattern",["switch"])
姝e垯琛ㄨ揪寮忓璞¤娉曞弬鏁版湁浠ヤ笅閮ㄥ垎錛?
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鍙傛暟閮ㄥ垎 | 鎻忚堪
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pattern | 蹇呴渶鐨勩傝浣跨敤鐨勬鍒欒〃杈懼紡妯″紡錛屼緥濡備嬌鐢ㄦ浛鎹㈡柟娉時eplace
| 鏃訛紝灝辨槸瑕佹浛鎹㈢殑鏂囨湰銆?br> | 璇硶 1錛岀敤 "/" 瀛楃鍒嗛殧妯″紡銆?nbsp;
| 璇硶 2錛岀敤寮曞彿灝嗘ā寮忓紩璧鋒潵銆?
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switch | 鍙夐」銆傝娉?nbsp; 2 瑕佺敤寮曞彿灝? switch 寮曡搗鏉ャ傚彲閫夌殑寮
| 鍏抽夐」鏈夛細
| i 錛堝拷鐣ュぇ灝忓啓錛?
| g 錛堝叏鏂囨煡鎵懼嚭鐜扮殑鎵鏈? pattern錛?
| gi 錛堝叏鏂囨煡鎵俱佸拷鐣ュぇ灝忓啓錛?
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璇硶1 褰撻鍏堢煡閬撴煡鎵懼瓧絎︿覆鏃剁敤
璇硶 2 褰撴煡鎵懼瓧絎︿覆緇忓父鍙樺姩鎴栦笉鐭ラ亾鏃剁敤錛屾瘮濡傜敱鐢ㄦ埛杈撳叆寰楀埌鐨勫瓧絎︿覆銆?nbsp;
鍦ㄤ嬌鐢ㄥ墠 pattern 鍙傛暟琚紪璇戜負鍐呴儴鏍煎紡銆?br>瀵硅娉? 1 鏉ヨ錛宲attern 鍦ㄨ鑴氭湰琚杞芥椂琚紪璇戙?br>瀵硅娉? 2 鏉ヨ錛宲attern 鍦ㄤ嬌鐢ㄥ墠錛屾垨璋冪敤 compile 鏂規硶鏃惰緙栬瘧銆?nbsp;
姝e垯琛ㄨ揪寮忕殑璇硶琛細
瀛楃 | 鎻忚堪
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\ | 鏍囪涓嬩竴涓瓧絎︽槸鐗規畩瀛楃鎴栨枃瀛椼備緥濡傦紝"n" 鍜屽瓧絎? "n" 鍖歸厤銆?
| "\n" 鍒欏拰鎹㈣瀛楃鍖歸厤銆傚簭鍒? "\\" 鍜? "\" 鍖歸厤錛岃? "\(" 鍒?
| 鍜? "(" 鍖歸厤銆?
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^ | 鍖歸厤杈撳叆鐨勫紑澶淬?
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$ | 鍖歸厤杈撳叆鐨勬湯灝俱?
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* | 鍖歸厤鍓嶉潰鐨勫瓙琛ㄨ揪寮忛浂鎴栧嬈?/span>銆備緥濡傦紝"zo*" 涓? "z" 鎴? "zoo" 鍖歸厤銆傜瓑浠蜂簬 {0錛寎
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+ | 鍖歸厤鍓嶉潰鐨勫瓙琛ㄨ揪寮忎竴嬈℃垨澶氭銆備緥濡傦紝"zo+" 涓? "zoo" 鍖歸厤錛屼絾鍜? "z"
| 涓嶅尮閰嶃?
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? | 鍖歸厤鍓嶄竴涓瓧絎﹂浂鎴栦竴嬈°備緥濡傦紝"a?ve?" 鍜? "never" 涓殑 "ve" 鍖?
| 閰嶃?
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. | 鍖歸厤闄ゆ崲琛屽瓧絎﹀鐨勪換浣曞崟涓瓧絎︺?
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(pat- | 鍖歸厤 pattern 騫惰浣忚鍖歸厤銆傚尮閰嶄笂鐨勫瓙瀛楃涓詫紝鍙互浣跨敤 Item
tern) | [0]...[n]錛屾潵浠庣敓鎴愮殑 Matches 闆嗗悎涓彇鍥炪傝鍖歸厤鍦嗘嫭鍙峰瓧
| 絎? ( )錛屽垯闇浣跨敤 "\(" 鎴? "\)"銆?
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x|y | 鍖歸厤 x 鎴? y銆備緥濡傦紝"z|food" 鍜? "z" 鎴? "food" 鍖歸厤銆?(z|f)
| ood" 鍖歸厤 "zoo" 鎴? "food"銆?
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{n} | n 鏄潪璐熸暣鏁般傚叡鍖歸厤 n 嬈°備緥濡傦紝"o{2}" 鍜? "Bob" 涓殑 "o" 涓嶅尮
| 閰嶏紝浣嗗拰 "foooood" 涓殑鍓嶄袱涓? o 鍖歸厤銆?
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{n,} | n 鏄竴涓潪璐熸暣鏁般傝嚦灝戝尮閰? n 嬈°備緥濡傦紝"o{2,}" 鍜? "Bob" 涓?
| 鐨? "o" 涓嶅尮閰嶏紝浣嗗拰 "foooood" 涓殑鎵鏈? o 鍖歸厤銆?o{1,}"
| 涓? "o+" 絳夋晥銆?o{0,}" 鍜? "o*" 絳夋晥銆?
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{n,m} | m 鍜? n 鏄潪璐熸暣鏁般傝嚦灝戝尮閰? n 嬈¤岃嚦澶氬尮閰? m 嬈°備緥濡傦紝"o
| {1,3}" 鍜? "fooooood" 涓殑鍓嶄笁涓? o 鍖歸厤銆?o{0,1}" 鍜? "o?" 絳?
| 鏁堛?
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[xyz] | 瀛楃闆嗗悎銆傚尮閰嶆嫭鍙峰唴鐨勪換涓瀛楃銆備緥濡傦紝"[abc]" 鍜? "plain" 涓?
| 鐨? "a" 鍖歸厤銆?
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[^xyz]| 鍚﹀畾瀛楃闆嗗悎銆傚尮閰嶉潪鎷彿鍐呯殑浠諱綍瀛楃銆備緥濡傦紝"[^abc]"
| 鍜? "plain" 涓殑 "p" 鍖歸厤銆?
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[a-z] | 瀛楃鑼冨洿銆傚拰鎸囧畾鑼冨洿鍐呯殑浠諱竴瀛楃鍖歸厤銆備緥濡傦紝"[a-z]" 鍖歸厤 "a"
| 鍒? "z"鑼冨洿鍐呯殑浠諱竴灝忓啓鐨?nobr oncontextmenu="return false;" onmousemove=kwM(2); id=key2 onmouseover="kwE(event,2, this);" style="COLOR: #6600ff; BORDER-BOTTOM: 0px dotted; BACKGROUND-COLOR: transparent; TEXT-DECORATION: underline" onclick="return kwC();" onmouseout="kwL(event, this);" target="_blank">瀛楁瘝琛ㄥ瓧絎︺?
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[^m-z]| 鍚﹀畾瀛楃鑼冨洿銆傚尮閰嶄笉鍦ㄦ寚瀹氳寖鍥村唴鐨勪換浣曞瓧絎︺備緥濡傦紝"[m-z]" 鍖歸厤涓?
| 鍦? "m" 鍒? "z"鑼冨洿鍐呯殑浠諱綍瀛楃銆?
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\b | 鍖歸厤瀛楃殑
| 鍜? "never" 涓殑 "er" 鍖歸厤錛屼絾鍜? "verb" 涓殑 "er" 涓嶅尮閰嶃?
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\B | 鍖歸厤闈炲瓧杈圭晫銆?ea*r\B" 鍜? "never early" 涓殑 "ear" 鍖歸厤銆?
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\d | 鍖歸厤鏁板瓧瀛楃銆傜瓑浠蜂簬 [0-9]銆?
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\D | 鍖歸厤闈炴暟瀛楀瓧絎︺傜瓑浠蜂簬 [^0-9]銆?
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\f | 鍖歸厤鎹㈤〉瀛楃銆?
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\n | 鍖歸厤鎹㈣瀛楃銆?
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\r | 鍖歸厤鍥炶濺絎﹀瓧絎︺?
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\s |鍖歸厤浠諱綍絀虹櫧錛屽寘鎷┖鏍箋佸埗琛ㄣ佹崲欏電瓑銆備笌 "[ \f\n\r\t\v]" 絳夋晥銆?
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\S | 鍖歸厤浠諱綍闈炵┖鐧藉瓧絎︺備笌 "[^ \f\n\r\t\v]" 絳夋晥銆?
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\t | 鍖歸厤鍒惰〃瀛楃銆?
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\v | 鍖歸厤鍨傜洿鍒惰〃絎︺?
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\w | 鍖歸厤鍖呮嫭涓嬪垝綰垮湪鍐呯殑浠諱綍瀛楀瓧絎︺備笌 "[A-Za-z0-9_]" 絳夋晥銆?
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\W | 鍖歸厤浠諱綍闈炲瓧瀛楃銆備笌 "[^A-Za-z0-9_]" 絳夋晥銆?
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\num | 鍖歸厤 num錛屽叾涓? num 鏄竴涓鏁存暟銆傝繑鍥炶浣忕殑鍖歸厤鐨勫紩鐢ㄣ備緥
| 濡傦紝"(.)\1" 鍖歸厤涓や釜榪炵畫鐨勫悓涓瀛楃銆?
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\n | 鍖歸厤 n錛屽叾涓? n 鏄叓榪涘埗鎹㈢爜鍊箋傚叓榪涘埗鎹㈢爜鍊煎繀欏繪槸 1銆?銆佹垨 3 浣?
| 闀褲備緥濡傦紝"\11" 鍜? "\011" 閮藉尮閰嶅埗琛ㄥ瓧絎︺?\0011" 鍜? "\001"
| & "1" 鏄瓑鏁堢殑銆傚叓榪涘埗鎹㈢爜鍊煎繀欏諱笉瓚呰繃 256銆傚鏋滆秴榪囦簡錛屽垯鍙湁
| 鍓嶄袱浣嶇粍鎴愯〃杈懼紡銆傚厑璁稿湪姝e垯琛ㄨ揪寮忎腑浣跨敤 ASCII 鐮併?
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\xn | 鍖歸厤 n錛屽叾涓? n 鏄崄鍏繘鍒舵崲鐮佸箋傚崄鍏繘鍒舵崲鐮佸煎繀欏繪濂芥槸涓や綅
| 闀褲備緥濡傦紝"\x41" 涓? "A" 鍖歸厤銆?\x041" 鍜? "\x04" & "1" 鏄瓑鏁?
| 鐨勩傚厑璁稿湪姝e垯琛ㄨ揪寮忎腑浣跨敤 ASCII 鐮併?
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