试试这个:
function ConvertNumber(number, decimals, dec_point, thousands_sep) {
number = (number + '').replace(/[^0-9+\-Ee.]/g, '');
var n = !isFinite(+number) ? 0 : +number,
prec = !isFinite(+decimals) ? 0 : Math.abs(decimals),
sep = (typeof thousands_sep === 'undefined') ? ',' : thousands_sep,
dec = (typeof dec_point === 'undefined') ? '.' : dec_point,
s = '',
toFixedFix = function (n, prec) {
var k = Math.pow(10, prec);
return '' + Math.round(n * k) / k;
};
s = (prec ? toFixedFix(n, prec) : '' + Math.round(n)).split('.');
if (s[0].length > 3) {
s[0] = s[0].replace(/\B(?=(?:\d{3})+(?!\d))/g, sep);
}
if ((s[1] || '').length < prec) {
s[1] = s[1] || '';
s[1] += new Array(prec - s[1].length + 1).join('0');
}
return s.join(dec);
}
例子:
example 1: ConvertNumber(1234.5678, 2, '.', ',');
returns 1: '1,234.57'
example 2: ConvertNumber(1000);
returns 2: '1,000'
example 3: ConvertNumber(1000.55, 1);
returns 3: '1,000.6'
example 4: ConvertNumber(67000, 5, ',', '.');
returns 4: '67.000,00000'
example 5: ConvertNumber('1.20', 4);
returns 5: '1.2000'