The JavaScript number object enables you to represent a numeric value. It may be integer or floating-point. JavaScript number object follows IEEE standard to represent the floating-point numbers.
By the help of Number() constructor, you can create number object in JavaScript. For example:
If value can't be converted to number, it returns NaN(Not a Number) that can be checked by isNaN() method.
You can direct assign a number to a variable also. For example:
See this example:
Output:
Let's see the list of JavaScript number constants with description.
| Constant | Description |
|---|---|
| MIN_VALUE | returns the largest minimum value. |
| MAX_VALUE | returns the largest maximum value. |
| POSITIVE_INFINITY | returns positive infinity, overflow value. |
| NEGATIVE_INFINITY | returns negative infinity, overflow value. |
| NaN | represents "Not a Number" value. |
Let's see the list of JavaScript number methods with description.
| Methods | Description |
|---|---|
| toExponential(x) | displays exponential value. |
| toFixed(x) | limits the number of digits after decimal value. |
| toPrecision(x) | formats the number with given number of digits. |
| toString() | converts number into string. |
| valueOf() | coverts other type of value into number. |
