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📄 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

📁 asp.net ,javascript 常用的字符操作函数
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      style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">true</SPAN><SPAN=20
      style=3D"COLOR: #000000">;<BR>}<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">else</SPAN><SPAN=20
      style=3D"COLOR: #000000"><BR>{<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;</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>IsNumber:&nbsp;=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=B0=E5=80=BC=E5=9E=8B=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=B0=E6=88=96=E8=
=B4=9F=E6=95=B0=EF=BC=8C=E8=BF=94=E5=9B=9E=E5=80=BC=E4=B8=BAtrue=E6=88=96=
false<BR>string:&nbsp;=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:&nbsp;=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:&nbsp;PPDJ<BR>sample:<BR>var&nbsp;a&nbsp;=3D=
&nbsp;=E2=80=B2123=E2=80=B2;<BR>if&nbsp;(IsNumber(a))<BR>{<BR>alert(=E2=80=
=B2a&nbsp;is&nbsp;a&nbsp;number=E2=80=B2);<BR>}<BR>if&nbsp;(IsNumber(a,=E2=
=80=B2+=E2=80=B2))<BR>{<BR>alert(a&nbsp;is&nbsp;a&nbsp;positive&nbsp;numb=
er);<BR>}<BR>if&nbsp;(IsNumber(a,=E2=80=B2-=E2=80=B2))<BR>{<BR>alert(=E2=80=
=B2a&nbsp;is&nbsp;a&nbsp;negative&nbsp;number=E2=80=B2);<BR>}<BR></SPAN><=
SPAN=20
      style=3D"COLOR: #008000">*/</SPAN><SPAN=20
      style=3D"COLOR: =
#000000"><BR><BR>function&nbsp;IsNumber(</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">string</SPAN><SPAN=20
      style=3D"COLOR: =
#000000">,sign)<BR>{<BR>var&nbsp;number;<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">if</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;(</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">string</SPAN><SPAN=20
      style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">null</SPAN><SPAN=20
      style=3D"COLOR: #000000">)&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">false</SPAN><SPAN=20
      style=3D"COLOR: #000000">;<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">if</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;((sign</SPAN><SPAN=20
      style=3D"COLOR: #000000">!=3D</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">null</SPAN><SPAN=20
      style=3D"COLOR: #000000">)&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">&amp;&amp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;(sign</SPAN><SPAN=20
      style=3D"COLOR: #000000">!=3D</SPAN><SPAN style=3D"COLOR: =
#000000">=E2=80=B2</SPAN><SPAN=20
      style=3D"COLOR: #000000">-</SPAN><SPAN=20
      style=3D"COLOR: #000000">=E2=80=B2)&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">&amp;&amp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;(sign</SPAN><SPAN=20
      style=3D"COLOR: #000000">!=3D</SPAN><SPAN style=3D"COLOR: =
#000000">=E2=80=B2</SPAN><SPAN=20
      style=3D"COLOR: #000000">+</SPAN><SPAN=20
      style=3D"COLOR: =
#000000">=E2=80=B2))<BR>{<BR>alert(=E2=80=B2IsNumber(</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">string</SPAN><SPAN=20
      style=3D"COLOR: =
#000000">,sign)=E7=9A=84=E5=8F=82=E6=95=B0=E5=87=BA=E9=94=99=EF=BC=9A&nbs=
p;sign=E4=B8=BAnull=E6=88=96</SPAN><SPAN=20
      style=3D"COLOR: #000000">"</SPAN><SPAN style=3D"COLOR: =
#000000">-</SPAN><SPAN=20
      style=3D"COLOR: #000000">"</SPAN><SPAN style=3D"COLOR: =
#000000">=E6=88=96</SPAN><SPAN=20
      style=3D"COLOR: #000000">"</SPAN><SPAN style=3D"COLOR: =
#000000">+</SPAN><SPAN=20
      style=3D"COLOR: #000000">"</SPAN><SPAN=20
      style=3D"COLOR: #000000">=E2=80=B2);<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">false</SPAN><SPAN=20
      style=3D"COLOR: #000000">;<BR>}<BR>number&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">=3D</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">new</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;Number(</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">string</SPAN><SPAN=20
      style=3D"COLOR: #000000">);<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">if</SPAN><SPAN=20
      style=3D"COLOR: =
#000000">&nbsp;(isNaN(number))<BR>{<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">false</SPAN><SPAN=20
      style=3D"COLOR: #000000">;<BR>}<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">else</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">if</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;((sign</SPAN><SPAN=20
      style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">null</SPAN><SPAN=20
      style=3D"COLOR: #000000">)&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">||</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;(sign</SPAN><SPAN=20
      style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN style=3D"COLOR: =
#000000">=E2=80=B2</SPAN><SPAN=20
      style=3D"COLOR: #000000">-</SPAN><SPAN=20
      style=3D"COLOR: #000000">=E2=80=B2&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">&amp;&amp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;number</SPAN><SPAN=20
      style=3D"COLOR: #000000">&lt;</SPAN><SPAN=20
      style=3D"COLOR: #000000">0</SPAN><SPAN=20
      style=3D"COLOR: #000000">)&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">||</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;(sign</SPAN><SPAN=20
      style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN style=3D"COLOR: =
#000000">=E2=80=B2</SPAN><SPAN=20
      style=3D"COLOR: #000000">+</SPAN><SPAN=20
      style=3D"COLOR: #000000">=E2=80=B2&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">&amp;&amp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;number</SPAN><SPAN=20
      style=3D"COLOR: #000000">&gt;</SPAN><SPAN=20
      style=3D"COLOR: #000000">0</SPAN><SPAN=20
      style=3D"COLOR: #000000">))<BR>{<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">true</SPAN><SPAN=20
      style=3D"COLOR: #000000">;<BR>}<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">else</SPAN><SPAN=20
      style=3D"COLOR: #000000"><BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;</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>SpecialString:&nbsp;=E7=94=A8=E4=BA=8E=E5=88=A4=E6=96=AD=E4=
=B8=80=E4=B8=AA=E5=AD=97=E7=AC=A6=E4=B8=B2=E6=98=AF=E5=90=A6=E5=90=AB=E6=9C=
=89=E6=88=96=E4=B8=8D=E5=90=AB=E6=9C=89=E6=9F=90=E4=BA=9B=E5=AD=97=E7=AC=A6=
<BR><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>string&nbsp;=EF=BC=9A&nbsp;=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>compare&nbsp=
;=EF=BC=9A&nbsp;=E6=AF=94=E8=BE=83=E7=9A=84=E5=AD=97=E7=AC=A6=E4=B8=B2(=E5=
=9F=BA=E5=87=86=E5=AD=97=E7=AC=A6=E4=B8=B2)<BR>BelongOrNot=EF=BC=9A&nbsp;=
true=E6=88=96false=EF=BC=8C=E2=80=9Ctrue=E2=80=9D=E8=A1=A8=E7=A4=BAstring=
=E7=9A=84=E6=AF=8F=E4=B8=80=E4=B8=AA=E5=AD=97=E7=AC=A6=E9=83=BD=E5=8C=85=E5=
=90=AB=E5=9C=A8compare=E4=B8=AD=EF=BC=8C<BR>=E2=80=9Cfalse=E2=80=9D=E8=A1=
=A8=E7=A4=BAstring=E7=9A=84=E6=AF=8F=E4=B8=80=E4=B8=AA=E5=AD=97=E7=AC=A6=E9=
=83=BD=E4=B8=8D=E5=8C=85=E5=90=AB=E5=9C=A8compare=E4=B8=AD<BR><BR>Author:=
&nbsp;PPDJ<BR>sample1:<BR>var&nbsp;str&nbsp;=3D&nbsp;=E2=80=B2123G=E2=80=B2=
;<BR>if&nbsp;(SpecialString(str,=E2=80=B21234567890=E2=80=B2))<BR>{<BR>al=
ert(=E2=80=B2Yes,&nbsp;All&nbsp;the&nbsp;letter&nbsp;of&nbsp;the&nbsp;str=
ing&nbsp;in&nbsp;=E2=80=B21234567890=E2=80=B2=E2=80=B2);<BR>}<BR>else<BR>=
{<BR>alert(=E2=80=B2No,&nbsp;one&nbsp;or&nbsp;more&nbsp;letters&nbsp;of&n=
bsp;the&nbsp;string&nbsp;not&nbsp;in&nbsp;=E2=80=B21234567890=E2=80=B2=E2=
=80=B2);<BR>}<BR>=E7=BB=93=E6=9E=9C=E6=89=A7=E8=A1=8C=E7=9A=84=E6=98=AFel=
se=E9=83=A8=E5=88=86<BR>sample2:<BR>var&nbsp;password&nbsp;=3D&nbsp;=E2=80=
=B21234=E2=80=B2;<BR>if&nbsp;(!SpecialString(password,=E2=80=B2=E2=80=B2"=
@#$%=E2=80=B2,false))&nbsp;<BR>{<BR>alert(=E2=80=B2Yes,&nbsp;The&nbsp;pas=
sword&nbsp;is&nbsp;correct.=E2=80=B2);<BR>}<BR>else<BR>{<BR>alert(=E2=80=B2=
No,&nbsp;The&nbsp;password&nbsp;is&nbsp;contain&nbsp;one&nbsp;or&nbsp;mor=
e&nbsp;letters&nbsp;of&nbsp;=E2=80=B2"@#$%=E2=80=B2=E2=80=B2);<BR>}&nbsp;=
<BR>=E7=BB=93=E6=9E=9C=E6=89=A7=E8=A1=8C=E7=9A=84=E6=98=AFelse=E9=83=A8=E5=
=88=86<BR></SPAN><SPAN style=3D"COLOR: #008000">*/</SPAN><SPAN=20
      style=3D"COLOR: =
#000000"><BR>function&nbsp;SpecialString(</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">string</SPAN><SPAN=20
      style=3D"COLOR: =
#000000">,compare,BelongOrNot)<BR>{<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">if</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;((</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">string</SPAN><SPAN=20
      style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">null</SPAN><SPAN=20
      style=3D"COLOR: #000000">)&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">||</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;(compare</SPAN><SPAN=20
      style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">null</SPAN><SPAN=20
      style=3D"COLOR: #000000">)&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">||</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;((BelongOrNot</SPAN><SPAN=20
      style=3D"COLOR: #000000">!=3D</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">null</SPAN><SPAN=20
      style=3D"COLOR: #000000">)&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">&amp;&amp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;(BelongOrNot</SPAN><SPAN=20
      style=3D"COLOR: #000000">!=3D</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">true</SPAN><SPAN=20
      style=3D"COLOR: #000000">)&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">&amp;&amp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;(BelongOrNot</SPAN><SPAN=20
      style=3D"COLOR: #000000">!=3D</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">false</SPAN><SPAN=20
      style=3D"COLOR: =
#000000">)))<BR>{<BR>alert(=E2=80=B2function&nbsp;SpecialString(</SPAN><S=
PAN=20
      style=3D"COLOR: #0000ff">string</SPAN><SPAN=20
      style=3D"COLOR: =
#000000">,compare,BelongOrNot)=E5=8F=82=E6=95=B0=E9=94=99=E8=AF=AF=E2=80=B2=
);<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">false</SPAN><SPAN=20
      style=3D"COLOR: #000000">;<BR>}<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">if</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;(BelongOrNot</SPAN><SPAN=20
      style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">null</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">||</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;BelongOrNot</SPAN><SPAN=20
      style=3D"COLOR: #000000">=3D=3D</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">true</SPAN><SPAN=20
      style=3D"COLOR: #000000">)<BR>{<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">for</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;(var&nbsp;i</SPAN><SPAN=20
      style=3D"COLOR: #000000">=3D</SPAN><SPAN style=3D"COLOR: =
#000000">0</SPAN><SPAN=20
      style=3D"COLOR: #000000">;i{<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">if</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;(compare.indexOf(</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">string</SPAN><SPAN=20
      style=3D"COLOR: #000000">.charAt(i))</SPAN><SPAN=20
      style=3D"COLOR: #000000">=3D=3D-</SPAN><SPAN=20
      style=3D"COLOR: #000000">1</SPAN><SPAN=20
      style=3D"COLOR: #000000">)<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">false</SPAN><SPAN=20
      style=3D"COLOR: #000000"><BR>}<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">true</SPAN><SPAN=20
      style=3D"COLOR: #000000">;<BR>}<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">else</SPAN><SPAN=20
      style=3D"COLOR: #000000"><BR>{<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">for</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;(var&nbsp;i</SPAN><SPAN=20
      style=3D"COLOR: #000000">=3D</SPAN><SPAN style=3D"COLOR: =
#000000">0</SPAN><SPAN=20
      style=3D"COLOR: #000000">;i{<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">if</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;(compare.indexOf(</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">string</SPAN><SPAN=20
      style=3D"COLOR: #000000">.charAt(i))</SPAN><SPAN=20
      style=3D"COLOR: #000000">!=3D-</SPAN><SPAN=20
      style=3D"COLOR: #000000">1</SPAN><SPAN=20
      style=3D"COLOR: #000000">)<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">false</SPAN><SPAN=20
      style=3D"COLOR: #000000"><BR>}<BR></SPAN><SPAN=20
      style=3D"COLOR: #0000ff">return</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #0000ff">true</SPAN><SPAN=20
      style=3D"COLOR: #000000">;<BR>}<BR>}<BR><BR><BR></SPAN><SPAN=20
      style=3D"COLOR: #008000">//</SPAN><SPAN=20
      style=3D"COLOR: #008000">--&gt;</SPAN><SPAN=20
      style=3D"COLOR: #008000"><BR></SPAN><SPAN=20
      style=3D"COLOR: #000000">&lt;</SPAN><SPAN=20
      style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
      style=3D"COLOR: #000000">/</SPAN><SPAN=20
      style=3D"COLOR: #000000">script</SPAN><SPAN=20
12345

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