JAVASCRIPT

convert number to comma separated format javascript

// Convert a number to a string with commas
function numberWithCommas(x) {
    return x.toString().replace(/B(?=(d{3})+(?!d))/g, ",");
}

// Convert a number to a string with commas taking into account decimal point
function numberWithCommasDecimal(x) {
    return x.toString().replace(/B(?<!.d*)(?=(d{3})+(?!d))/g, ",");
}