The Number object represents numerical date, either integers or floating-point numbers. In general, you do not need to worry about Number objects because the browser automatically converts number literals to instances of the number class.
Syntax:
Creating a number object:
var val = new Number(number); |
If the argument cannot be converted into a number, it returns NaN (Not-a-Number).
Number Properties:
Here is a list of each property and its description.
Property | Description |
---|---|
MAX_VALUE | The largest possible value a number in JavaScript can have 1.7976931348623157E+308 |
MIN_VALUE | The smallest possible value a number in JavaScript can have 5E-324 |
NaN | Equal to a value that is not a number. |
NEGATIVE_INFINITY | A value that is less than MIN_VALUE. |
POSITIVE_INFINITY | A value that is greater than MAX_VALUE |
prototype | A static property of the Number object. Use the prototype property to assign new properties and methods to the Number object in the current document |
Number Methods
The Number object contains only the default methods that are part of every object's definition.
Method | Description |
---|---|
constructor() | Returns the function that created this object's instance. By default this is the Number object. |
toExponential() | Forces a number to display in exponential notation, even if the number is in the range in which JavaScript normally uses standard notation. |
toFixed() | Formats a number with a specific number of digits to the right of the decimal. |
toLocaleString() | Returns a string value version of the current number in a format that may vary according to a browser's locale settings. |
toPrecision() | Defines how many total digits (including digits to the left and right of the decimal) to display of a number. |
toString() | Returns the string representation of the number's value. |
valueOf() | Returns the number's value. |
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