Referensi Nomor JavaScript
Nomor JavaScript
JavaScript hanya memiliki satu jenis angka.
Angka dapat ditulis dengan atau tanpa desimal:
Contoh
let x = 3.14; // A number with decimals
let y = 34; // A number without decimals
Bilangan ekstra besar atau ekstra kecil dapat ditulis dengan notasi ilmiah (eksponen):
Contoh
let x = 123e5; // 12300000
let y = 123e-5; // 0.00123
Untuk tutorial tentang nomor JavaScript, baca Tutorial Nomor JavaScript kami .
Metode Nomor JavaScript
Method | Description |
---|---|
isFinite() | Checks whether a value is a finite number |
isInteger() | Checks whether a value is an integer |
isNaN() | Checks whether a value is Number.NaN |
isSafeInteger() | Checks whether a value is a safe integer |
toExponential(x) | Converts a number into an exponential notation |
toFixed(x) | Formats a number with x numbers of digits after the decimal point |
toLocaleString() | Converts a number into a string, based on the locale settings |
toPrecision(x) | Formats a number to x length |
toString() | Converts a number to a string |
valueOf() | Returns the primitive value of a number |
Semua metode angka mengembalikan nilai baru. Mereka tidak mengubah variabel asli.
Properti Nomor JavaScript
Property | Description |
---|---|
constructor | Returns the function that created JavaScript's Number prototype |
MAX_VALUE | Returns the largest number possible in JavaScript |
MIN_VALUE | Returns the smallest number possible in JavaScript |
NEGATIVE_INFINITY | Represents negative infinity (returned on overflow) |
NaN | Represents a "Not-a-Number" value |
POSITIVE_INFINITY | Represents infinity (returned on overflow) |
prototype | Allows you to add properties and methods to an object |