📄 用javascript判断日期、数字、整数和特殊字符 - 东猫北熊的技术积累 - 博客园.mht
字号:
=E5=8F=AF=E5=88=A4=E6=96=AD=E6=AD=A3=E6=95=B4=E5=9E=8B=E5=92=8C=E8=B4=9F=E6=
=95=B4=E5=9E=8B<BR>number =EF=BC=9A=E6=95=B0=E5=80=BC=E5=9E=8B=EF=BC=
=8C=E5=90=8C=E6=A0=B7=E5=8F=AF=E5=88=A4=E6=96=AD=E6=AD=A3=E8=B4=9F<BR>dat=
e =EF=BC=9A=E6=97=A5=E6=9C=9F=E5=9E=8B=EF=BC=8C=E5=8F=AF=E6=94=AF=E6=
=8C=81=E4=BB=A5=E8=87=AA=E5=AE=9A=E4=B9=89=E5=88=86=E9=9A=94=E7=AC=A6=E7=9A=
=84=E6=97=A5=E6=9C=9F=E6=A0=BC=E5=BC=8F=EF=BC=8C=E7=BC=BA=E7=9C=81=E6=98=AF=
=E4=BB=A5=E2=80=B2-=E2=80=B2=E4=B8=BA=E5=88=86=E9=9A=94=E7=AC=A6<BR>strin=
g =EF=BC=9A=E5=88=A4=E6=96=AD=E4=B8=80=E4=B8=AA=E5=AD=97=E7=AC=A6=E4=
=B8=B2=E5=8C=85=E6=8B=AC=E6=88=96=E4=B8=8D=E5=8C=85=E6=8B=AC=E6=9F=90=E4=BA=
=9B=E5=AD=97=E7=AC=A6<BR>=E8=BF=94=E5=9B=9E=E5=80=BC=EF=BC=9A<BR>true=E6=88=
=96false<BR><BR>=E5=8F=82=E6=95=B0=EF=BC=9A<BR>ObjStr =EF=BC=9A=E5=AF=
=B9=E8=B1=A1=E6=A0=87=E8=AF=86=E7=AC=A6=E2=80=94=E2=80=94=E5=AF=B9=E8=B1=A1=
=E5=90=8D=EF=BC=9B<BR>ObjType=EF=BC=9A=E5=AF=B9=E8=B1=A1=E7=B1=BB=E5=9E=8B=
(=E2=80=B2integer=E2=80=B2,=E2=80=B2number=E2=80=B2,=E2=80=B2date=E2=80=B2=
,=E2=80=B2string=E2=80=B2=E4=B9=8B=E4=B8=80)<BR><BR>=E5=85=B6=E4=BB=96=E8=
=AF=B4=E6=98=8E=EF=BC=9A<BR>=E5=BD=93=E5=AF=B9=E8=B1=A1=E5=80=BC=E4=B8=BA=
=E7=A9=BA=E6=97=B6=EF=BC=8C=E5=88=99=E8=BF=94=E5=9B=9E=E9=94=99=E8=AF=AF=E3=
=80=82<BR><BR>Author:PPDJ <BR><BR>=E4=BE=8B=E5=AD=90=EF=BC=9A<BR>exa=
mple 1:=E8=A6=81=E6=B1=82=E6=A3=80=E9=AA=8C=E8=BE=93=E5=85=A5=E6=A1=86=
text1=E7=9A=84=E8=BE=93=E5=85=A5=E6=95=B0=E6=8D=AE=E6=98=AF=E5=90=A6=E6=98=
=AF=E2=80=9C=E6=95=B4=E5=9E=8B=E2=80=9D=E6=95=B0=E6=8D=AE=EF=BC=8C=E8=8B=A5=
=E4=B8=8D=E6=98=AF=EF=BC=8C=E5=88=99=E6=8F=90=E7=A4=BA<BR>if (!Logic=
alValue(=E2=80=B2text1=E2=80=B2,=E2=80=B2integer=E2=80=B2)) alert(=E2=
=80=B2Error: Your must input a integer numb=
er=E2=80=B2);<BR>example 2:=E8=A6=81=E6=B1=82=E6=A3=80=E9=AA=8C=E8=BE=
=93=E5=85=A5=E6=A1=86text1=E7=9A=84=E8=BE=93=E5=85=A5=E6=95=B0=E6=8D=AE=E6=
=98=AF=E5=90=A6=E6=98=AF=E2=80=9C=E6=AD=A3=E6=95=B4=E5=9E=8B=E2=80=9D=E6=95=
=B0=E6=8D=AE=EF=BC=8C=E8=8B=A5=E4=B8=8D=E6=98=AF=EF=BC=8C=E5=88=99=E6=8F=90=
=E7=A4=BA <BR>if (!LogicalValue(=E2=80=B2text1=E2=80=B2,=E2=80=B2=
integer=E2=80=B2,=E2=80=B2+=E2=80=B2)) alert(=E2=80=B2Error: Yo=
ur must input a positive integer number=E2=80=
=B2);<BR>example 3:=E8=A6=81=E6=B1=82=E6=A3=80=E9=AA=8C=E8=BE=93=E5=85=
=A5=E6=A1=86text1=E7=9A=84=E8=BE=93=E5=85=A5=E6=95=B0=E6=8D=AE=E6=98=AF=E5=
=90=A6=E6=98=AF=E2=80=9C=E8=B4=9F=E6=95=B4=E5=9E=8B=E2=80=9D=E6=95=B0=E6=8D=
=AE=EF=BC=8C=E8=8B=A5=E4=B8=8D=E6=98=AF=EF=BC=8C=E5=88=99=E6=8F=90=E7=A4=BA=
<BR>if (!LogicalValue(=E2=80=B2text1=E2=80=B2,=E2=80=B2integer=
=E2=80=B2,=E2=80=B2-=E2=80=B2)) alert(=E2=80=B2Error: Your =
;must input a negative integer number=E2=80=B2);=
<BR>exmaple 4:=E8=A6=81=E6=B1=82=E6=A3=80=E9=AA=8C=E8=BE=93=E5=85=A5=
=E6=A1=86text1=E7=9A=84=E8=BE=93=E5=85=A5=E6=95=B0=E6=8D=AE=E6=98=AF=E5=90=
=A6=E6=98=AF=E6=95=B0=E5=80=BC=EF=BC=8C=E8=8B=A5=E4=B8=8D=E6=98=AF=EF=BC=8C=
=E5=88=99=E6=8F=90=E7=A4=BA <BR>if (!LogicalValue(=E2=80=B2text=
1=E2=80=B2,=E2=80=B2number=E2=80=B2)) alert(=E2=80=B2Error: You=
r must input a number=E2=80=B2);<BR>exmaple 5:=E8=
=A6=81=E6=B1=82=E6=A3=80=E9=AA=8C=E8=BE=93=E5=85=A5=E6=A1=86text1=E7=9A=84=
=E8=BE=93=E5=85=A5=E6=95=B0=E6=8D=AE=E6=98=AF=E5=90=A6=E6=98=AF=E2=80=9C=E6=
=AD=A3=E2=80=9D=E6=95=B0=E5=80=BC=EF=BC=8C=E8=8B=A5=E4=B8=8D=E6=98=AF=EF=BC=
=8C=E5=88=99=E6=8F=90=E7=A4=BA <BR>if (!LogicalValue(=E2=80=B2t=
ext1=E2=80=B2,=E2=80=B2number=E2=80=B2,=E2=80=B2+=E2=80=B2)) alert(=E2=
=80=B2Error: Your must input a number=E2=80=B2);=
<BR>exmaple 6:=E8=A6=81=E6=B1=82=E6=A3=80=E9=AA=8C=E8=BE=93=E5=85=A5=
=E6=A1=86text1=E7=9A=84=E8=BE=93=E5=85=A5=E6=95=B0=E6=8D=AE=E6=98=AF=E5=90=
=A6=E6=98=AF=E2=80=9C=E8=B4=9F=E2=80=9D=E6=95=B0=E5=80=BC=EF=BC=8C=E8=8B=A5=
=E4=B8=8D=E6=98=AF=EF=BC=8C=E5=88=99=E6=8F=90=E7=A4=BA <BR>if (=
!LogicalValue(=E2=80=B2text1=E2=80=B2,=E2=80=B2number=E2=80=B2,=E2=80=B2-=
=E2=80=B2)) alert(=E2=80=B2Error: Your must input&nbs=
p;a number=E2=80=B2);<BR>example 7:=E8=A6=81=E6=B1=82=E6=A3=80=E9=
=AA=8C=E8=BE=93=E5=85=A5=E6=A1=86text1=E7=9A=84=E8=BE=93=E5=85=A5=E6=95=B0=
=E6=8D=AE=E6=98=AF=E5=90=A6=E6=98=AF=E6=97=A5=E6=9C=9F=E5=9E=8B=EF=BC=8C=E8=
=8B=A5=E4=B8=8D=E6=98=AF=EF=BC=8C=E5=88=99=E6=8F=90=E7=A4=BA<BR>if (=
!LogicalValue(=E2=80=B2text1=E2=80=B2,=E2=80=B2date=E2=80=B2)) alert=
(=E2=80=B2Error: Your must input a logical =
date value=E2=80=B2);<BR>=E8=8B=A5=E5=AE=83=E7=9A=84=E5=88=86=E9=9A=94=
=E7=AC=A6=E4=B8=BAA=EF=BC=8C=E2=80=9CA=E2=80=9D=E6=98=AF=E4=B8=80=E4=B8=AA=
=E5=8F=98=E9=87=8F=EF=BC=8C=E5=A6=82=E5=B8=B8=E7=94=A8=E7=9A=84=E2=80=B2-=
=E2=80=B2=E5=92=8C=E2=80=B2/=E2=80=B2=EF=BC=8C=E5=88=99=E7=94=A8=E5=A6=82=
=E4=B8=8B=E8=AF=AD=E6=B3=95<BR>if (!LogicalValue(=E2=80=B2text1=E2=80=
=B2,=E2=80=B2date=E2=80=B2,A)) alert(=E2=80=B2Error: Your =
must input a logical date value=E2=80=B2);<BR>=E6=
=88=96=E5=BD=93=E5=88=86=E9=9A=94=E7=AC=A6=E4=B8=BA=E2=80=B2/=E2=80=B2=E6=
=97=B6<BR>if (!LogicalValue(=E2=80=B2text1=E2=80=B2,=E2=80=B2date=E2=
=80=B2,=E2=80=B2/=E2=80=B2)) alert(=E2=80=B2Error: Your mu=
st input a logical date value=E2=80=B2);<BR>=E5=BD=
=93=E5=88=86=E9=9A=94=E7=AC=A6=E4=B8=BA=E2=80=B2-=E2=80=B2=E6=97=B6=EF=BC=
=8C=E5=8F=AF=E4=B8=8D=E8=A6=81=E5=8F=82=E6=95=B0=E2=80=B2-=E2=80=B2=EF=BC=
=8C=E5=8F=AF=E5=B8=A6=E4=B8=8A<BR>example 8:=E8=A6=81=E6=B1=82=E6=A3=
=80=E9=AA=8C=E8=BE=93=E5=85=A5=E6=A1=86text1=E7=9A=84=E8=BE=93=E5=85=A5=E8=
=A1=A8=E7=A4=BA=E9=A2=9C=E8=89=B2=E7=9A=84=E5=AD=97=E7=AC=A6=E4=B8=B2=E6=98=
=AF=E5=90=A6=E5=90=88=E7=90=86=EF=BC=8C=E8=8B=A5=E4=B8=8D=E5=90=88=E7=90=86=
=EF=BC=8C=E5=88=99=E6=8F=90=E7=A4=BA<BR>if (!LogicalValue(=E2=80=B2t=
ext1=E2=80=B2,=E2=80=B2string=E2=80=B2,=E2=80=B20123456789ABCDEFabcdef=E2=
=80=B2)) alert(=E2=80=B2Error: Your must input a=
logical color value=E2=80=B2);<BR>example 9:=E8=A6=81=
=E6=B1=82=E6=A3=80=E9=AA=8C=E8=BE=93=E5=85=A5=E6=A1=86text1=E7=9A=84=E8=BE=
=93=E5=85=A5=E8=A1=A8=E7=A4=BA=E5=AF=86=E7=A0=81=E7=9A=84=E5=AD=97=E7=AC=A6=
=E4=B8=B2=E6=98=AF=E5=90=A6=E4=B8=8D=E5=90=AB=E2=80=9C=E2=80=B2"@#$%&=
^*=E2=80=9D=E8=BF=99=E4=BA=9B=E5=AD=97=E7=AC=A6=EF=BC=8C=E8=8B=A5=E5=90=AB=
=E6=9C=89=EF=BC=8C=E5=88=99=E6=8F=90=E7=A4=BA<BR>if (!LogicalValue(=E2=
=80=B2text1=E2=80=B2,=E2=80=B2string=E2=80=B2,=E2=80=B2=E2=80=B2"@#$%&=
;^*=E2=80=B2,false)) alert(=E2=80=B2Error: Your password&n=
bsp;can not contain =E2=80=B2"@#$%&^*=E2=80=B2);<BR>=E5=
=85=B6=E4=B8=ADfalse=E8=A1=A8=E7=A4=BA=E4=B8=8D=E5=8C=85=E5=90=AB=E6=9C=89=
=E6=9F=90=E4=BA=9B=E5=AD=97=E7=AC=A6=EF=BC=8Ctrue=E8=A1=A8=E7=A4=BA=E5=BF=
=85=E9=A1=BB=E6=98=AF=E5=93=AA=E4=BA=9B=E5=AD=97=E7=AC=A6=EF=BC=8C=E7=BC=BA=
=E7=9C=81=E5=80=BC=E4=B8=BAtrue<BR></SPAN><SPAN=20
style=3D"COLOR: #008000">*/</SPAN><SPAN=20
style=3D"COLOR: =
#000000"><BR>function LogicalValue(ObjStr,ObjType)<BR>{<BR>var =
str</SPAN><SPAN=20
style=3D"COLOR: #000000">=3D</SPAN><SPAN=20
style=3D"COLOR: #000000">=E2=80=B2=E2=80=B2;<BR></SPAN><SPAN=20
style=3D"COLOR: #0000ff">if</SPAN><SPAN=20
style=3D"COLOR: #000000"> ((ObjStr</SPAN><SPAN=20
style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN=20
style=3D"COLOR: #0000ff">null</SPAN><SPAN=20
style=3D"COLOR: #000000">) </SPAN><SPAN=20
style=3D"COLOR: #000000">||</SPAN><SPAN=20
style=3D"COLOR: #000000"> (ObjStr</SPAN><SPAN=20
style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN=20
style=3D"COLOR: #000000">=E2=80=B2=E2=80=B2) </SPAN><SPAN=20
style=3D"COLOR: #000000">||</SPAN><SPAN=20
style=3D"COLOR: #000000"> ObjType</SPAN><SPAN=20
style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN=20
style=3D"COLOR: #0000ff">null</SPAN><SPAN=20
style=3D"COLOR: =
#000000">)<BR>{<BR>alert(=E2=80=B2=E5=87=BD=E6=95=B0LogicalValue=E7=BC=BA=
=E5=B0=91=E5=8F=82=E6=95=B0=E2=80=B2);<BR></SPAN><SPAN=20
style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
style=3D"COLOR: #000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">false</SPAN><SPAN=20
style=3D"COLOR: #000000">;<BR>}<BR>var obj </SPAN><SPAN=20
style=3D"COLOR: #000000">=3D</SPAN><SPAN=20
style=3D"COLOR: =
#000000"> document.all(ObjStr);<BR></SPAN><SPAN=20
style=3D"COLOR: #0000ff">if</SPAN><SPAN=20
style=3D"COLOR: #000000"> (obj.value</SPAN><SPAN=20
style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN=20
style=3D"COLOR: #000000">=E2=80=B2=E2=80=B2) </SPAN><SPAN=20
style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
style=3D"COLOR: #000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">false</SPAN><SPAN=20
style=3D"COLOR: #000000">;<BR></SPAN><SPAN=20
style=3D"COLOR: #0000ff">for</SPAN><SPAN=20
style=3D"COLOR: #000000"> (var i</SPAN><SPAN=20
style=3D"COLOR: #000000">=3D</SPAN><SPAN style=3D"COLOR: =
#000000">2</SPAN><SPAN=20
style=3D"COLOR: #000000">;i{ <BR></SPAN><SPAN=20
style=3D"COLOR: #0000ff">if</SPAN><SPAN=20
style=3D"COLOR: #000000"> (str</SPAN><SPAN=20
style=3D"COLOR: #000000">!=3D</SPAN><SPAN=20
style=3D"COLOR: =
#000000">=E2=80=B2=E2=80=B2)<BR>str </SPAN><SPAN=20
style=3D"COLOR: #000000">+=3D</SPAN><SPAN=20
style=3D"COLOR: =
#000000"> =E2=80=B2,=E2=80=B2;<BR>str </SPAN><SPAN=20
style=3D"COLOR: #000000">+=3D</SPAN><SPAN=20
style=3D"COLOR: =
#000000"> =E2=80=B2arguments[=E2=80=B2</SPAN><SPAN=20
style=3D"COLOR: #000000">+</SPAN><SPAN style=3D"COLOR: =
#000000">i</SPAN><SPAN=20
style=3D"COLOR: #000000">+</SPAN><SPAN=20
style=3D"COLOR: =
#000000">=E2=80=B2]=E2=80=B2;<BR>}<BR>str</SPAN><SPAN=20
style=3D"COLOR: #000000">=3D</SPAN><SPAN=20
style=3D"COLOR: #000000">(str</SPAN><SPAN=20
style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN=20
style=3D"COLOR: #000000">=E2=80=B2=E2=80=B2</SPAN><SPAN =
style=3D"COLOR: #000000">?</SPAN><SPAN=20
style=3D"COLOR: =
#000000">=E2=80=B2obj.value=E2=80=B2:=E2=80=B2obj.value,=E2=80=B2</SPAN><=
SPAN=20
style=3D"COLOR: #000000">+</SPAN><SPAN=20
style=3D"COLOR: #000000">str);<BR>var temp</SPAN><SPAN=20
style=3D"COLOR: #000000">=3D</SPAN><SPAN=20
style=3D"COLOR: #000000">ObjType.toLowerCase();<BR></SPAN><SPAN=20
style=3D"COLOR: #0000ff">if</SPAN><SPAN=20
style=3D"COLOR: #000000"> (temp</SPAN><SPAN=20
style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN=20
style=3D"COLOR: =
#000000">=E2=80=B2integer=E2=80=B2)<BR>{<BR></SPAN><SPAN=20
style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
style=3D"COLOR: =
#000000"> eval(=E2=80=B2IsInteger(=E2=80=B2</SPAN><SPAN=20
style=3D"COLOR: #000000">+</SPAN><SPAN=20
style=3D"COLOR: #000000">str</SPAN><SPAN=20
style=3D"COLOR: #000000">+</SPAN><SPAN=20
style=3D"COLOR: =
#000000">=E2=80=B2)=E2=80=B2);<BR>}<BR></SPAN><SPAN=20
style=3D"COLOR: #0000ff">else</SPAN><SPAN=20
style=3D"COLOR: #000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">if</SPAN><SPAN=20
style=3D"COLOR: #000000"> (temp</SPAN><SPAN=20
style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN=20
style=3D"COLOR: =
#000000">=E2=80=B2number=E2=80=B2)<BR>{<BR></SPAN><SPAN=20
style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
style=3D"COLOR: =
#000000"> eval(=E2=80=B2IsNumber(=E2=80=B2</SPAN><SPAN=20
style=3D"COLOR: #000000">+</SPAN><SPAN=20
style=3D"COLOR: #000000">str</SPAN><SPAN=20
style=3D"COLOR: #000000">+</SPAN><SPAN=20
style=3D"COLOR: =
#000000">=E2=80=B2)=E2=80=B2);<BR>}<BR></SPAN><SPAN=20
style=3D"COLOR: #0000ff">else</SPAN><SPAN=20
style=3D"COLOR: #000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">if</SPAN><SPAN=20
style=3D"COLOR: #000000"> (temp</SPAN><SPAN=20
style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN style=3D"COLOR: =
#000000">=E2=80=B2</SPAN><SPAN=20
style=3D"COLOR: #0000ff">string</SPAN><SPAN=20
style=3D"COLOR: #000000">=E2=80=B2)<BR>{<BR></SPAN><SPAN=20
style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
style=3D"COLOR: =
#000000"> eval(=E2=80=B2SpecialString(=E2=80=B2</SPAN><SPAN=20
style=3D"COLOR: #000000">+</SPAN><SPAN=20
style=3D"COLOR: #000000">str</SPAN><SPAN=20
style=3D"COLOR: #000000">+</SPAN><SPAN=20
style=3D"COLOR: =
#000000">=E2=80=B2)=E2=80=B2);<BR>}<BR></SPAN><SPAN=20
style=3D"COLOR: #0000ff">else</SPAN><SPAN=20
style=3D"COLOR: #000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">if</SPAN><SPAN=20
style=3D"COLOR: #000000"> (temp</SPAN><SPAN=20
style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN=20
style=3D"COLOR: =
#000000">=E2=80=B2date=E2=80=B2)<BR>{<BR></SPAN><SPAN=20
style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
style=3D"COLOR: =
#000000"> eval(=E2=80=B2IsDate(=E2=80=B2</SPAN><SPAN=20
style=3D"COLOR: #000000">+</SPAN><SPAN=20
style=3D"COLOR: #000000">str</SPAN><SPAN=20
style=3D"COLOR: #000000">+</SPAN><SPAN=20
style=3D"COLOR: =
#000000">=E2=80=B2)=E2=80=B2);<BR>}<BR></SPAN><SPAN=20
style=3D"COLOR: #0000ff">else</SPAN><SPAN=20
style=3D"COLOR: #000000"><BR>{<BR>alert(=E2=80=B2</SPAN><SPAN=20
style=3D"COLOR: #000000">"</SPAN><SPAN=20
style=3D"COLOR: #000000">=E2=80=B2+temp+=E2=80=B2</SPAN><SPAN=20
style=3D"COLOR: #000000">"</SPAN><SPAN=20
style=3D"COLOR: =
#000000">=E7=B1=BB=E5=9E=8B=E5=9C=A8=E7=8E=B0=E5=9C=A8=E7=89=88=E6=9C=AC=E4=
=B8=AD=E6=9C=AA=E6=8F=90=E4=BE=9B=E2=80=B2);<BR></SPAN><SPAN=20
style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
style=3D"COLOR: #000000"> </SPAN><SPAN=20
style=3D"COLOR: #0000ff">false</SPAN><SPAN=20
style=3D"COLOR: #000000">;<BR>}<BR>}<BR><BR></SPAN><SPAN=20
style=3D"COLOR: #008000">/*</SPAN><SPAN=20
style=3D"COLOR: =
#008000">*<BR>IsInteger: =E7=94=A8=E4=BA=8E=E5=88=A4=E6=96=AD=E4=B8=80=
=E4=B8=AA=E6=95=B0=E5=AD=97=E5=9E=8B=E5=AD=97=E7=AC=A6=E4=B8=B2=E6=98=AF=E5=
=90=A6=E4=B8=BA=E6=95=B4=E5=BD=A2=EF=BC=8C<BR>=E8=BF=98=E5=8F=AF=E5=88=A4=
=E6=96=AD=E6=98=AF=E5=90=A6=E6=98=AF=E6=AD=A3=E6=95=B4=E6=95=B0=E6=88=96=E8=
=B4=9F=E6=95=B4=E6=95=B0=EF=BC=8C=E8=BF=94=E5=9B=9E=E5=80=BC=E4=B8=BAtrue=
=E6=88=96false<BR>string: =E9=9C=80=E8=A6=81=E5=88=A4=E6=96=AD=E7=9A=
=84=E5=AD=97=E7=AC=A6=E4=B8=B2<BR>sign: =E8=8B=A5=E8=A6=81=E5=88=A4=E6=
=96=AD=E6=98=AF=E6=AD=A3=E8=B4=9F=E6=95=B0=E6=98=AF=E4=BD=BF=E7=94=A8=EF=BC=
=8C=E6=98=AF=E6=AD=A3=E7=94=A8=E2=80=B2+=E2=80=B2=EF=BC=8C=E8=B4=9F=E2=80=
=B2-=E2=80=B2=EF=BC=8C=E4=B8=8D=E7=94=A8=E5=88=99=E8=A1=A8=E7=A4=BA=E4=B8=
=8D=E4=BD=9C=E5=88=A4=E6=96=AD<BR>Author: PPDJ<BR>sample:<BR>var&nbs=
p;a =3D =E2=80=B2123=E2=80=B2;<BR>if (IsInteger(a))<BR>{<B=
R>alert(=E2=80=B2a is a integer=E2=80=B2);<BR>}<BR>if =
;(IsInteger(a,=E2=80=B2+=E2=80=B2))<BR>{<BR>alert(a is a p=
ositive integer);<BR>}<BR>if (IsInteger(a,=E2=80=B2-=E2=80=B2))=
<BR>{<BR>alert(=E2=80=B2a is a negative integer=E2=80=
=B2);<BR>}<BR></SPAN><SPAN=20
style=3D"COLOR: #008000">*/</SPAN><SPAN=20
style=3D"COLOR: =
#000000"><BR><BR>function IsInteger(</SPAN><SPAN=20
style=3D"COLOR: #0000ff">string</SPAN><SPAN=20
style=3D"COLOR: =
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