Baseline Widely available
Number.NaN
ìì±ì Not-A-Number(ì«ìê° ìë)를 ëíë
ëë¤. NaN
ê³¼ ê°ìµëë¤.
function clean(x) {
// eslint-disable-next-line use-isnan
if (x === Number.NaN) {
// Can never be true
return null;
}
if (isNaN(x)) {
return 0;
}
}
console.log(clean(Number.NaN));
// Expected output: 0
ì ì ìì±ì´ë¯ë¡ ì ê·¼í기 ìí´ Number
ê°ì²´ë¥¼ ìì±í íìë ììµëë¤. (Number.NaN
ì¬ì©)
function sanitise(x) {
if (isNaN(x)) {
return Number.NaN;
}
return x;
}
NaNì ëí í
ì¤í¸
NaN
íì´ì§ìì NaNì ëí í
ì¤í¸ 를 ì°¸ê³ íì¸ì.
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