js给数字用豆号分节

自己写的js给数字豆号分节,来提高自己

转自：http://www.ok22.org/art_detail.aspx?id=56 （可直接运行）

 

<
html
>
<
body
>
<
table
 
border
=
"1"
 
cellspacing
=
"5"
 
id
=
"sp"
>
<
tr
>
<
td
>
12345436267.89
</
td
>
<
td
>
3402.89
</
td
>
<
td
>
3402
</
td
>
</
tr
>
</
table
>
<
script
>
function formatNumber(num){
if(!/^(\+|-)?(\d+)(\.\d+)?$/.test(num)){return num;}
var a
 = 
RegExp
.$1, 
b
 = 
RegExp
.$2, 
c
 = 
RegExp
.$3;
var re
 = 
new
 RegExp().compile("(\\d)(\\d{3})(,|$)");
while(re.test(b)) b
b
 = b.replace(re,"$1,$2$3");
return a +""+ b +""+ c;
}
function spl(){
var tdvalue
=
document
.getElementById("sp").getElementsByTagName("td");
var std
=
""
;
var rstr
=
""
;
for(j
=
0
;j
<
tdvalue.length
;j++)
{ std
=
""
;
std
=
tdvalue
[j];
rstr
=
formatNumber
(std.innerHTML);
std.innerHTML
=
rstr
}
}
spl();
</
script
>
</
body
>
</
html
>