Numeric constants in JavaScript are interpreted as hexadecimal if they are prefixed by 0x.
Example
| let x = 0xFF; |
| Avoid writing numbers with a leading zero, such as 07. Certain versions of JavaScript may interpret numbers as octal if they are formatted in this manner. |
By default, JavaScript presents numbers as base 10 decimals.
However, you can utilize the toString() method to output numbers ranging from base 2 to base 36.
Hexadecimal is base 16, decimal is base 10, octal is base 8, and binary is base 2.
Example
| let myNumber = 32; myNumber.toString(32); myNumber.toString(16); myNumber.toString(12); myNumber.toString(10); myNumber.toString(8); myNumber.toString(2); |
Typically, JavaScript numbers are primitive values generated from literals.
| let x = 123; |
Numbers in JavaScript are usually primitive values created from literals, but they can also be defined as objects using the “new” keyword.
| let y = new Number(123); |
Example
| let x = 123; let y = new Number(123); |
| Avoid creating Number objects as they can complicate your code and slow down execution speed. Additionally, Number objects may produce unexpected results. |
When employing the == operator, x and y are considered equal.
| let x = 500; let y = new Number(500); |
When utilizing the === operator, x and y are not considered equal.
| let x = 500; let y = new Number(500); |
| Take note of the distinction between (x==y) and (x===y). |
(x == y) true or false?
| let x = new Number(500); let y = new Number(500); |
(x === y) true or false?
| let x = new Number(500); let y = new Number(500); |
| When comparing two JavaScript objects, the result will always be false. |