📄 用javascript判断日期、数字、整数和特殊字符_javascript实例教程_javascrip12t_网页设计.mht
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(temp=3D=3D´string´) <BR>{ <BR>return=20
eval(´SpecialString(´+str+´)´); <BR>} <BR>else =
if (temp=3D=3D´date´) <BR>{=20
<BR>return eval(´IsDate(´+str+´)´); <BR>} =
<BR>else <BR>{=20
<BR>alert(´"´+temp+´"=C0=E0=D0=CD=D4=DA=CF=D6=D4=DA=B0=E6=
=B1=BE=D6=D0=CE=B4=CC=E1=B9=A9´); <BR>return false; <BR>} <BR>} =
<BR><BR>/**=20
<BR>IsInteger: =
=D3=C3=D3=DA=C5=D0=B6=CF=D2=BB=B8=F6=CA=FD=D7=D6=D0=CD=D7=D6=B7=FB=B4=AE=CA=
=C7=B7=F1=CE=AA=D5=FB=D0=CE=A3=AC =
<BR>=BB=B9=BF=C9=C5=D0=B6=CF=CA=C7=B7=F1=CA=C7=D5=FD=D5=FB=CA=FD=BB=F2=B8=
=BA=D5=FB=CA=FD=A3=AC=B7=B5=BB=D8=D6=B5=CE=AAtrue=BB=F2false <BR>string: =
=D0=E8=D2=AA=C5=D0=B6=CF=B5=C4=D7=D6=B7=FB=B4=AE <BR>sign: =
=C8=F4=D2=AA=C5=D0=B6=CF=CA=C7=D5=FD=B8=BA=CA=FD=CA=C7=CA=B9=D3=C3=A3=AC=CA=
=C7=D5=FD=D3=C3´+´=A3=AC=B8=BA´-´=A3=AC=B2=BB=D3=C3=
=D4=F2=B1=ED=CA=BE=B2=BB=D7=F7=C5=D0=B6=CF <BR>Author: PPDJ=20
<BR>sample: <BR>var a =3D ´123´; <BR>if (IsInteger(a)) <BR>{ =
<BR>alert(´a is a=20
integer´); <BR>} <BR>if (IsInteger(a,´+´)) <BR>{ =
<BR>alert(a is a positive=20
integer); <BR>} <BR>if (IsInteger(a,´-´)) <BR>{ =
<BR>alert(´a is a negative=20
integer´); <BR>} <BR>*/ <BR><BR>function IsInteger(string ,sign) =
<BR>{ <BR>var=20
integer; <BR>if ((sign!=3Dnull) && (sign!=3D´-´) =
&& (sign!=3D´+´))=20
<BR>{ =
<BR>alert(´IsInter(string,sign)=B5=C4=B2=CE=CA=FD=B3=F6=B4=ED=A3=BA=
sign=CE=AAnull=BB=F2"-"=BB=F2"+"´); <BR>return=20
false; <BR>} <BR>integer =3D parseInt(string); <BR>if (isNaN(integer)) =
<BR>{=20
<BR>return false; <BR>} <BR>else if =
(integer.toString().length=3D=3Dstring.length)=20
<BR>{ <BR>if ((sign=3D=3Dnull) || (sign=3D=3D´-´ && =
integer<0) || (sign=3D=3D´+´=20
&& integer>0)) <BR>{ <BR>return true; <BR>} <BR>else =
<BR>return=20
false; <BR>} <BR>else <BR>return false; <BR>} <BR><BR>/** <BR>IsDate:=20
=D3=C3=D3=DA=C5=D0=B6=CF=D2=BB=B8=F6=D7=D6=B7=FB=B4=AE=CA=C7=B7=F1=CA=C7=C8=
=D5=C6=DA=B8=F1=CA=BD=B5=C4=D7=D6=B7=FB=B4=AE =
<BR><BR>=B7=B5=BB=D8=D6=B5=A3=BA <BR>true=BB=F2false =
<BR><BR>=B2=CE=CA=FD=A3=BA <BR>DateString=A3=BA=20
=D0=E8=D2=AA=C5=D0=B6=CF=B5=C4=D7=D6=B7=FB=B4=AE <BR>Dilimeter =A3=BA =
=C8=D5=C6=DA=B5=C4=B7=D6=B8=F4=B7=FB=A3=AC=C8=B1=CA=A1=D6=B5=CE=AA´=
-´ <BR><BR>Author: PPDJ <BR>sample: <BR>var=20
date =3D ´1999-1-2´; <BR>if (IsDate(date)) <BR>{ =
<BR>alert(´You see, the default=20
separator is "-"); <BR>} <BR>date =3D ´1999/1/2"; <BR>if =
(IsDate(date,´/´)) <BR>{=20
<BR>alert(´The date´s separator is "/"); <BR>} <BR>*/ =
<BR><BR>function=20
IsDate(DateString , Dilimeter) <BR>{ <BR>if (DateString=3D=3Dnull) =
return false;=20
<BR>if (Dilimeter=3D=3D´´ || Dilimeter=3D=3Dnull) =
<BR>Dilimeter =3D ´-´; <BR>var tempy=3D´´;=20
<BR>var tempm=3D´´; <BR>var tempd=3D´´; <BR>var =
tempArray; <BR>if=20
(DateString.length<8 && DateString.length>10) <BR>return =
false;=20
<BR>tempArray =3D DateString.split(Dilimeter); <BR>if =
(tempArray.length!=3D3)=20
<BR>return false; <BR>if (tempArray[0].length=3D=3D4) <BR>
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