js给数目字用豆号分节 _JavaScript

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代码运行

< 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 > ?