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function format (num, fixed)
{
return num.toFixed (fixed).replace (/\d{1,3}(?=(\d{3})+(\.\d*)?$)/g, '$&,');
}
console.log (format (1.566, 2));
console.info (format (1.56, 2));
console.error (format (1234.566, 2));
console.debug (format (1234567.56, 2));
console.warn (format (0, 2));
