📄 正则表达式参考文档.mht
字号:
"aaaaa"</A></P></TD></TR>
<TR>
<TD>
<P><SPAN id=3Dpattern=20
name=3D"pattern">{m,n}</SPAN></P></TD>
<TD>
=
<P>=B1=ED=B4=EF=CA=BD=D6=C1=C9=D9=D6=D8=B8=B4m=B4=CE=A3=AC=D7=EE=B6=E0=D6=
=D8=B8=B4n=B4=CE=A3=AC=B1=C8=C8=E7=A3=BA<A=20
=
href=3D"http://www.regexlab.com/zh/workshop.asp?pat=3Dba{1,3}&txt=3Da=
,baaa,baa,b,ba">"ba{1,3}"=BF=C9=D2=D4=C6=A5=C5=E4=20
=
"ba"=BB=F2"baa"=BB=F2"baaa"</A></P></TD></TR>
<TR>
<TD>
<P><SPAN id=3Dpattern=20
name=3D"pattern">{m,}</SPAN></P></TD>
<TD>
=
<P>=B1=ED=B4=EF=CA=BD=D6=C1=C9=D9=D6=D8=B8=B4m=B4=CE=A3=AC=B1=C8=C8=E7=A3=
=BA<A=20
=
href=3D"http://www.regexlab.com/zh/workshop.asp?pat=3D\w\d{2,}&txt=3D=
b1,a12,_456,_4AA,M12344,12346546547446534543543">"\w\d{2,}"=BF=C9=D2=D4=C6=
=A5=C5=E4=20
=
"a12","_456","M12344"...</A></P></TD></TR>
<TR>
<TD>
<P><SPAN id=3Dpattern=20
name=3D"pattern">?</SPAN></P></TD>
<TD>
=
<P>=C6=A5=C5=E4=B1=ED=B4=EF=CA=BD0=B4=CE=BB=F2=D5=DF1=B4=CE=A3=AC=CF=E0=B5=
=B1=D3=DA {0,1}=A3=AC=B1=C8=C8=E7=A3=BA<A=20
=
href=3D"http://www.regexlab.com/zh/workshop.asp?pat=3Da[cd]%3F&txt=3D=
a,c,d,ac,ad">"a[cd]?"=BF=C9=D2=D4=C6=A5=C5=E4=20
"a","ac","ad"</A></P></TD></TR>
<TR>
<TD>
<P><SPAN id=3Dpattern=20
name=3D"pattern">+</SPAN></P></TD>
<TD>
=
<P>=B1=ED=B4=EF=CA=BD=D6=C1=C9=D9=B3=F6=CF=D61=B4=CE=A3=AC=CF=E0=B5=B1=D3=
=DA {1,}=A3=AC=B1=C8=C8=E7=A3=BA<A=20
=
href=3D"http://www.regexlab.com/zh/workshop.asp?pat=3Da%2Bb&txt=3Da%2=
Cb%2Cab%2Caab%2Caaab">"a+b"=BF=C9=D2=D4=C6=A5=C5=E4=20
"ab","aab","aaab"...</A></P></TD></TR>
<TR>
<TD>
<P><SPAN id=3Dpattern=20
name=3D"pattern">*</SPAN></P></TD>
<TD>
=
<P>=B1=ED=B4=EF=CA=BD=B2=BB=B3=F6=CF=D6=BB=F2=B3=F6=CF=D6=C8=CE=D2=E2=B4=CE=
=A3=AC=CF=E0=B5=B1=D3=DA {0,}=A3=AC=B1=C8=C8=E7=A3=BA<A=20
=
href=3D"http://www.regexlab.com/zh/workshop.asp?pat=3D%5C%5E*b&txt=3D=
%5E%2Cb%2C%5E%5E%5Eb%2C%5E%5E%5E%5E%5E%5E%5Eb">"\^*b"=BF=C9=D2=D4=C6=A5=C5=
=E4=20
=
"b","^^^b"...</A></P></TD></TR></TBODY></TABLE>
<P> <A=20
=
href=3D"http://www.regexlab.com/zh/workshop.asp?pat=3D%5Cd%2B%5C.%3F%5Cd*=
&txt=3DIt%20costs%20%2412.5">=BE=D9=C0=FD1=A3=BA=B1=ED=B4=EF=CA=BD=20
"<SPAN id=3Dpattern =
name=3D"pattern">\d+\.?\d*</SPAN>"=20
=D4=DA=C6=A5=C5=E4 "It costs $12.5"=20
=
=CA=B1</A>=A3=AC=C6=A5=C5=E4=B5=C4=BD=E1=B9=FB=CA=C7=A3=BA=B3=C9=B9=A6=A3=
=BB=C6=A5=C5=E4=B5=BD=B5=C4=C4=DA=C8=DD=CA=C7=A3=BA"12.5"=A3=BB=C6=A5=C5=E4=
=B5=BD=B5=C4=CE=BB=D6=C3=CA=C7=A3=BA=BF=AA=CA=BC=D3=DA10=A3=AC=BD=E1=CA=F8=
=D3=DA14=A1=A3<BR><BR> =20
<A=20
=
href=3D"http://www.regexlab.com/zh/workshop.asp?pat=3Dgo{2,8}gle&txt=3D=
Ads%20by%20goooooogle%2C%20or%20gooogle">=BE=D9=C0=FD2=A3=BA=B1=ED=B4=EF=CA=
=BD=20
"<SPAN id=3Dpattern=20
name=3D"pattern">go{2,8}gle</SPAN>" =
=D4=DA=C6=A5=C5=E4 "Ads by=20
goooooogle"=20
=
=CA=B1</A>=A3=AC=C6=A5=C5=E4=B5=C4=BD=E1=B9=FB=CA=C7=A3=BA=B3=C9=B9=A6=A3=
=BB=C6=A5=C5=E4=B5=BD=B5=C4=C4=DA=C8=DD=CA=C7=A3=BA"goooooogle"=A3=BB=C6=A5=
=C5=E4=B5=BD=B5=C4=CE=BB=D6=C3=CA=C7=A3=BA=BF=AA=CA=BC=D3=DA7=A3=AC=BD=E1=
=CA=F8=D3=DA17=A1=A3</P>
<HR color=3D#fea089 SIZE=3D1>
<H5><A name=3Dspecial></A>1.6 =
=C6=E4=CB=FB=D2=BB=D0=A9=B4=FA=B1=ED=B3=E9=CF=F3=D2=E2=D2=E5=B5=C4=CC=D8=CA=
=E2=B7=FB=BA=C5</H5>
<P> =
=D2=BB=D0=A9=B7=FB=BA=C5=D4=DA=B1=ED=B4=EF=CA=BD=D6=D0=B4=FA=B1=ED=B3=E9=CF=
=F3=B5=C4=CC=D8=CA=E2=D2=E2=D2=E5=A3=BA</P>
<TABLE style=3D"BORDER-COLLAPSE: collapse" =
cellSpacing=3D0 cellPadding=3D3 =
bgColor=3D#f8f8f8=20
border=3D1>
<TBODY>
<TR bgColor=3D#f0f0f0>
<TD width=3D67>
<P>=B1=ED=B4=EF=CA=BD</P></TD>
<TD>
<P>=D7=F7=D3=C3</P></TD></TR>
<TR>
<TD>
<P><SPAN id=3Dpattern=20
name=3D"pattern">^</SPAN></P></TD>
<TD>
=
<P>=D3=EB=D7=D6=B7=FB=B4=AE=BF=AA=CA=BC=B5=C4=B5=D8=B7=BD=C6=A5=C5=E4=A3=AC=
=B2=BB=C6=A5=C5=E4=C8=CE=BA=CE=D7=D6=B7=FB</P></TD></TR>
<TR>
<TD>
<P><SPAN id=3Dpattern=20
name=3D"pattern">$</SPAN></P></TD>
<TD>
=
<P>=D3=EB=D7=D6=B7=FB=B4=AE=BD=E1=CA=F8=B5=C4=B5=D8=B7=BD=C6=A5=C5=E4=A3=AC=
=B2=BB=C6=A5=C5=E4=C8=CE=BA=CE=D7=D6=B7=FB</P></TD></TR>
<TR>
<TD>
<P><SPAN id=3Dpattern=20
name=3D"pattern">\b</SPAN></P></TD>
<TD>
=
<P>=C6=A5=C5=E4=D2=BB=B8=F6=B5=A5=B4=CA=B1=DF=BD=E7=A3=AC=D2=B2=BE=CD=CA=C7=
=B5=A5=B4=CA=BA=CD=BF=D5=B8=F1=D6=AE=BC=E4=B5=C4=CE=BB=D6=C3=A3=AC=B2=BB=C6=
=A5=C5=E4=C8=CE=BA=CE=D7=D6=B7=FB</P></TD></TR></TBODY></TABLE>
<P> =20
=
=BD=F8=D2=BB=B2=BD=B5=C4=CE=C4=D7=D6=CB=B5=C3=F7=C8=D4=C8=BB=B1=C8=BD=CF=B3=
=E9=CF=F3=A3=AC=D2=F2=B4=CB=A3=AC=BE=D9=C0=FD=B0=EF=D6=FA=B4=F3=BC=D2=C0=ED=
=BD=E2=A1=A3<BR><BR> =20
<A=20
=
href=3D"http://www.regexlab.com/zh/workshop.asp?pat=3D^aaa&txt=3Dxxx+=
aaa+xxx">=BE=D9=C0=FD1=A3=BA=B1=ED=B4=EF=CA=BD=20
"<SPAN id=3Dpattern =
name=3D"pattern">^aaa</SPAN>" =D4=DA=C6=A5=C5=E4=20
"xxx aaa xxx" =
=CA=B1</A>=A3=AC=C6=A5=C5=E4=BD=E1=B9=FB=CA=C7=A3=BA=CA=A7=B0=DC=A1=A3=D2=
=F2=CE=AA "^"=20
=
=D2=AA=C7=F3=D3=EB=D7=D6=B7=FB=B4=AE=BF=AA=CA=BC=B5=C4=B5=D8=B7=BD=C6=A5=C5=
=E4=A3=AC=D2=F2=B4=CB=A3=AC=D6=BB=D3=D0=B5=B1 "aaa" =
=CE=BB=D3=DA=D7=D6=B7=FB=B4=AE=B5=C4=BF=AA=CD=B7=B5=C4=CA=B1=BA=F2=A3=AC"=
^aaa"=20
=B2=C5=C4=DC=C6=A5=C5=E4=A3=AC<A=20
=
href=3D"http://www.regexlab.com/zh/workshop.asp?pat=3D^aaa&txt=3Daaa+=
xxx+xxx">=B1=C8=C8=E7=A3=BA"aaa=20
xxx =
xxx"</A>=A1=A3<BR><BR> <A=20
=
href=3D"http://www.regexlab.com/zh/workshop.asp?pat=3Daaa$&txt=3Dxxx+=
aaa+xxx">=BE=D9=C0=FD2=A3=BA=B1=ED=B4=EF=CA=BD=20
"<SPAN id=3Dpattern =
name=3D"pattern">aaa$</SPAN>" =D4=DA=C6=A5=C5=E4=20
"xxx aaa xxx" =
=CA=B1</A>=A3=AC=C6=A5=C5=E4=BD=E1=B9=FB=CA=C7=A3=BA=CA=A7=B0=DC=A1=A3=D2=
=F2=CE=AA "$"=20
=
=D2=AA=C7=F3=D3=EB=D7=D6=B7=FB=B4=AE=BD=E1=CA=F8=B5=C4=B5=D8=B7=BD=C6=A5=C5=
=E4=A3=AC=D2=F2=B4=CB=A3=AC=D6=BB=D3=D0=B5=B1 "aaa" =
=CE=BB=D3=DA=D7=D6=B7=FB=B4=AE=B5=C4=BD=E1=CE=B2=B5=C4=CA=B1=BA=F2=A3=AC"=
aaa$"=20
=B2=C5=C4=DC=C6=A5=C5=E4=A3=AC<A=20
=
href=3D"http://www.regexlab.com/zh/workshop.asp?pat=3Daaa$&txt=3Dxxx+=
xxx+aaa">=B1=C8=C8=E7=A3=BA"xxx=20
xxx =
aaa"</A>=A1=A3<BR><BR> <A=20
=
href=3D"http://www.regexlab.com/zh/workshop.asp?pat=3D.%5Cb.&txt=3D@@=
@abc">=BE=D9=C0=FD3=A3=BA=B1=ED=B4=EF=CA=BD=20
"<SPAN id=3Dpattern =
name=3D"pattern">.\b.</SPAN>" =D4=DA=C6=A5=C5=E4=20
"@@@abc"=20
=
=CA=B1</A>=A3=AC=C6=A5=C5=E4=BD=E1=B9=FB=CA=C7=A3=BA=B3=C9=B9=A6=A3=BB=C6=
=A5=C5=E4=B5=BD=B5=C4=C4=DA=C8=DD=CA=C7=A3=BA"@a"=A3=BB=C6=A5=C5=E4=B5=BD=
=B5=C4=CE=BB=D6=C3=CA=C7=A3=BA=BF=AA=CA=BC=D3=DA2=A3=AC=BD=E1=CA=F8=D3=DA=
4=A1=A3<BR> =20
=BD=F8=D2=BB=B2=BD=CB=B5=C3=F7=A3=BA"\b" =
=D3=EB "^" =BA=CD "$"=20
=
=C0=E0=CB=C6=A3=AC=B1=BE=C9=ED=B2=BB=C6=A5=C5=E4=C8=CE=BA=CE=D7=D6=B7=FB=A3=
=AC=B5=AB=CA=C7=CB=FC=D2=AA=C7=F3=CB=FC=D4=DA=C6=A5=C5=E4=BD=E1=B9=FB=D6=D0=
=CB=F9=B4=A6=CE=BB=D6=C3=B5=C4=D7=F3=D3=D2=C1=BD=B1=DF=A3=AC=C6=E4=D6=D0=D2=
=BB=B1=DF=CA=C7 "\w"=20
=B7=B6=CE=A7=A3=AC=C1=ED=D2=BB=B1=DF=CA=C7 =
=B7=C7"\w" =B5=C4=B7=B6=CE=A7=A1=A3<BR><BR> <A=20
=
href=3D"http://www.regexlab.com/zh/workshop.asp?pat=3D%5Cbend%5Cb&txt=
=3Dweekend,endfor,end">=BE=D9=C0=FD4=A3=BA=B1=ED=B4=EF=CA=BD=20
"<SPAN id=3Dpattern =
name=3D"pattern">\bend\b</SPAN>"=20
=D4=DA=C6=A5=C5=E4 "weekend,endfor,end"=20
=
=CA=B1</A>=A3=AC=C6=A5=C5=E4=BD=E1=B9=FB=CA=C7=A3=BA=B3=C9=B9=A6=A3=BB=C6=
=A5=C5=E4=B5=BD=B5=C4=C4=DA=C8=DD=CA=C7=A3=BA"end"=A3=BB=C6=A5=C5=E4=B5=BD=
=B5=C4=CE=BB=D6=C3=CA=C7=A3=BA=BF=AA=CA=BC=D3=DA15=A3=AC=BD=E1=CA=F8=D3=DA=
18=A1=A3</P>
<P> =
=D2=BB=D0=A9=B7=FB=BA=C5=BF=C9=D2=D4=D3=B0=CF=EC=B1=ED=B4=EF=CA=BD=C4=DA=B2=
=BF=B5=C4=D7=D3=B1=ED=B4=EF=CA=BD=D6=AE=BC=E4=B5=C4=B9=D8=CF=B5=A3=BA</P>=
<TABLE style=3D"BORDER-COLLAPSE: collapse" =
cellSpacing=3D0 cellPadding=3D3 =
bgColor=3D#f8f8f8=20
border=3D1>
<TBODY>
<TR bgColor=3D#f0f0f0>
<TD width=3D65>
<P>=B1=ED=B4=EF=CA=BD</P></TD>
<TD>
<P>=D7=F7=D3=C3</P></TD></TR>
<TR>
<TD>
<P>|</P></TD>
<TD>
=
<P>=D7=F3=D3=D2=C1=BD=B1=DF=B1=ED=B4=EF=CA=BD=D6=AE=BC=E4 "=BB=F2" =
=B9=D8=CF=B5=A3=AC=C6=A5=C5=E4=D7=F3=B1=DF=BB=F2=D5=DF=D3=D2=B1=DF</P></T=
D></TR>
<TR>
<TD>
<P>( )</P></TD>
<TD>
<P>(1). =
=D4=DA=B1=BB=D0=DE=CA=CE=C6=A5=C5=E4=B4=CE=CA=FD=B5=C4=CA=B1=BA=F2=A3=AC=C0=
=A8=BA=C5=D6=D0=B5=C4=B1=ED=B4=EF=CA=BD=BF=C9=D2=D4=D7=F7=CE=AA=D5=FB=CC=E5=
=B1=BB=D0=DE=CA=CE<BR>(2).=20
=
=C8=A1=C6=A5=C5=E4=BD=E1=B9=FB=B5=C4=CA=B1=BA=F2=A3=AC=C0=A8=BA=C5=D6=D0=B5=
=C4=B1=ED=B4=EF=CA=BD=C6=A5=C5=E4=B5=BD=B5=C4=C4=DA=C8=DD=BF=C9=D2=D4=B1=BB=
=B5=A5=B6=C0=B5=C3=B5=BD</P></TD></TR></TBODY></TABLE>
<P> <A=20
=
href=3D"http://www.regexlab.com/zh/workshop.asp?pat=3DTom%7CJack&txt=3D=
I%27m+Tom%2C+he+is+Jack">=BE=D9=C0=FD5=A3=BA=B1=ED=B4=EF=CA=BD=20
"<SPAN id=3Dpattern =
name=3D"pattern">Tom|Jack</SPAN>"=20
=D4=DA=C6=A5=C5=E4=D7=D6=B7=FB=B4=AE "I'm =
Tom, he is Jack"=20
=
=CA=B1</A>=A3=AC=C6=A5=C5=E4=BD=E1=B9=FB=CA=C7=A3=BA=B3=C9=B9=A6=A3=BB=C6=
=A5=C5=E4=B5=BD=B5=C4=C4=DA=C8=DD=CA=C7=A3=BA"Tom"=A3=BB=C6=A5=C5=E4=B5=BD=
=B5=C4=CE=BB=D6=C3=CA=C7=A3=BA=BF=AA=CA=BC=D3=DA4=A3=AC=BD=E1=CA=F8=D3=DA=
7=A1=A3=C6=A5=C5=E4=CF=C2=D2=BB=B8=F6=CA=B1=A3=AC=C6=A5=C5=E4=BD=E1=B9=FB=
=CA=C7=A3=BA=B3=C9=B9=A6=A3=BB=C6=A5=C5=E4=B5=BD=B5=C4=C4=DA=C8=DD=CA=C7=A3=
=BA"Jack"=A3=BB=C6=A5=C5=E4=B5=BD=B5=C4=CE=BB=D6=C3=CA=B1=A3=BA=BF=AA=CA=BC=
=D3=DA15=A3=AC=BD=E1=CA=F8=D3=DA19=A1=A3<BR><BR> =20
<A=20
=
href=3D"http://www.regexlab.com/zh/workshop.asp?pat=3D%28go%5Cs*%29%2B&am=
p;txt=3⌨️ 快捷键说明
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