这是一个将数字转换为欧洲(1.000,00 - 默认)或美国(1,000.00)样式的函数:
function sep1000(somenum,usa){
var dec = String(somenum).split(/[.,]/)
,sep = usa ? ',' : '.'
,decsep = usa ? '.' : ',';
return dec[0]
.split('')
.reverse()
.reduce(function(prev,now,i){
return i%3 === 0 ? prev+sep+now : prev+now;}
)
.split('')
.reverse()
.join('') +
(dec[1] ? decsep+dec[1] :'')
;
}
选择:
function sep1000(somenum,usa){
var dec = String(somenum).split(/[.,]/)
,sep = usa ? ',' : '.'
,decsep = usa ? '.' : ',';
return xsep(dec[0],sep) + (dec[1] ? decsep+dec[1] :'');
function xsep(num,sep) {
var n = String(num).split('')
,i = -3;
while (n.length + i > 0) {
n.splice(i, 0, sep);
i -= 4;
}
return n.join('');
}
}
//usage for both functions
alert(sep1000(10002343123.034)); //=> 10.002.343.123,034
alert(sep1000(10002343123.034,true)); //=> 10,002,343,123.034
[根据评论编辑]如果要分隔100,只需更改i -= 4;
为i -= 3;
function sep100(somenum,usa){
var dec = String(somenum).split(/[.,]/)
,sep = usa ? ',' : '.'
,decsep = usa ? '.' : ',';
return xsep(dec[0],sep) + (dec[1] ? decsep+dec[1] :'');
function xsep(num,sep) {
var n = String(num).split('')
,i = -3;
while (n.length + i > 0) {
n.splice(i, 0, sep);
i -= 3; //<== here
}
return n.join('');
}
}