function addCommas(money){
var re=/\d{3}/g
return money.replace(re,x=>x+",")
}
console.log( addCommas("$123456789") )
Ответ:
$123,456,789,
JavaScript test | #JavaScript
JA JavaScript test @js_test · 9.72K subscribers
function addCommas(money){
var re=/\d{3}/g
return money.replace(re,x=>x+",")
}
console.log( addCommas("$123456789") )