1 鍒嗙粍鐨勬椂鍊欙紝錛熷彲浠ヤ笉璁板綍涓浜涚粍錛屾瘮濡傦細
var str="abc";
var reg=/(?:a)b(c)/g
reg.test(str);
alert(RegExp.$1);//緇撴灉涓篶
姝ゆ椂铏界劧絎竴涓皬鎷彿涔熸弧瓚籌紝浣嗘槸濡傛灉鐢?:鏍囨敞涔嬪悗錛屽畠涓嶄細琚瓨鍏ユ鍒欒〃杈懼紡鐨勭紦瀛樹腑銆?br />
2 閬囪鍔熻兘錛??="錛屾剰璇嗚鐩爣涓蹭腑鑲畾瀛樺湪浠涔堬紝姣斿錛?br />
var str="ab4";
var reg=/ab(?=\d)/g
alert(reg.test(str));//緇撴灉涓簍rue
鎰忔濇槸絎笁浣嶈偗瀹氭槸鏁板瓧錛?br />
"?!"錛屾剰鎬濊鐩爣涓蹭腑涓嶅簲璇ュ瓨鍦ㄤ粈涔?/strong>
var str="ab1";
var reg=/ab(?!\d)/g
alert(reg.test(str));//緇撴灉涓篺alse
鎰忔濇槸鐩爣涓蹭腑鐨勭涓変綅涓嶅簲璇ユ槸鏁板瓧銆?/strong>
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