The toString() method returns a string representing the specified Number object.
Number.prototype.toString()
Try it
Syntax
toString() toString(radix)
Parameters
-
radixOptional -
An integer in the range
2through36specifying the base to use for representing numeric values.
Return value
A string representing the specified Number object.
Exceptions
-
RangeError -
If
toString()is given aradixless than2or greater than36, aRangeErroris thrown.
Description
The Number object overrides the toString() method of the Object object. (It does not inherit Object.prototype.toString()). For Number objects, the toString() method returns a string representation of the object in the specified radix.
The toString() method parses its first argument, and attempts to return a string representation in the specified radix (base). For radices above 10, the letters of the alphabet indicate numerals greater than 9. For example, for hexadecimal numbers (base 16), a through f are used.
If the radix is not specified, the preferred radix is assumed to be 10.
If the numObj is negative, the sign is preserved. This is the case even if the radix is 2; the string returned is the positive binary representation of the numObj preceded by a - sign, not the two's complement of the numObj.
If the numObj is not a whole number, the 'dot' sign is used to separate the decimal places.
Examples
Using toString
let count = 10 console.log(count.toString()) // displays '10' console.log((17).toString()) // displays '17' console.log((17.2).toString()) // displays '17.2' let x = 6 console.log(x.toString(2)) // displays '110' console.log((254).toString(16)) // displays 'fe' console.log((-10).toString(2)) // displays '-1010' console.log((-0xff).toString(2)) // displays '-11111111'
Specifications
Browser compatibility
| Desktop | Mobile | Server | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
toString |
1
|
12
|
1
|
3
|
4
|
1
|
1
|
18
|
4
|
10.1
|
1
|
1.0
|
1.0
|
0.10.0
|
See also
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/toString
