JavaScript Number Reference
JavaScript Numbers are always stored in double-precision 64-bit binary format IEEE 754. The types of number literals You can use decimal, binary, octal, and hexadecimal.
Syntax:
Number(object)
Javascript
function func() { // Original string let a = true; let value = Number(a); console.log(value);}func(); |
Output
1
The complete list of JavaScript Numbers is listed below:
JavaScript Number Constructor: In JavaScript, a constructor gets called when an object is created using the new keyword.
| Constructor | Description | Example |
|---|---|---|
| Number() | Returns the number format for any type of javascript variable. |
JavaScript Number Properties: A JavaScript property is a member of an object that associates a key with a value. There are two types of Number properties in JavaScript.
- Static Property: A static property is a property that has the same value for the entire class.
| Static Properties | Description | Example |
|---|---|---|
| EPSILON | Shows the difference between 1 and the smallest floating point number which is greater than 1. | |
| MAX_SAFE_INTEGER | Represents the maximum safe integer. | |
| MAX_VALUE | Represent maximum numeric values. | |
| MIN_SAFE_INTEGER | Represents the minimum safe integer. | |
| MIN_VALUE | Represent minimum numeric values. | |
| NaN | Represents a value that is not a valid number. | |
| NEGATIVE_INFINITY | Represents the largest negative value i.e negative infinity. | |
| POSITIVE_INFINITY | Represents the largest positive value i.e positive infinity. |
- Instance Property: An instance property is a property that has a new copy for every new instance of the class.
| Instance Properties | Description | Example |
|---|---|---|
| constructor | Return the number constructor function for the object. |
JavaScript Number Methods: JavaScript methods are the actions that can be performed on objects. There are types of Number methods in JavaScript.
- Static Method: If the method is called using the Number class itself then it is called a static method.
| Static Methods | Description | Example |
|---|---|---|
| isNaN() | Determine whether the passed value is NaN(Not a Number) and is of the type “Number”. | |
| isFinite() | Check whether the passed value is a finite number or not. | |
| isInteger() | Returns true if the passed value is an integer, otherwise false. | |
| isSafeInteger() | Check the provided value is a number that is a safe integer. | |
| parseFloat() | Accept the string and convert it into a floating-point number. | |
| parseInt() | Manipulate numbers whether it is negative or positive. |
- Instance Method: If the method is called on an instance of a number then it is called an instance method.
| Instance Methods | Description | Example |
|---|---|---|
| toExponential() | Returns a string representing the Number object in exponential notation. | |
| toFixed() | Format a number using fixed-point notation. | |
| toLocaleString() | Converts a number into a string, using a local language format. | |
| toPrecision() | Format a number to a specific precision or length. | |
| toString() | Return a string representing the specified Number object. | |
| valueOf() | Return the primitive value of a number. |
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