JavaScript Number Object 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:
Test it Now Output:
JavaScript Number Constants 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. |
JavaScript Number Methods Let's see the list of JavaScript number methods with their description.
| Methods |
Description |
| isFinite() |
It determines whether the given value is a finite number. |
| isInteger() |
It determines whether the given value is an integer. |
| parseFloat() |
It converts the given string into a floating point number. |
| parseInt() |
It converts the given string into an integer number. |
| toExponential() |
It returns the string that represents exponential notation of the given number. |
| toFixed() |
It returns the string that represents a number with exact digits after a decimal point. |
| toPrecision() |
It returns the string representing a number of specified precision. |
| toString() |
It returns the given number in the form of string. |
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