JavaScript Number prototype Property

　JavaScript Number Object

prototypeProperties can add properties and methods to your Number object.

Note:Prototype is a global property that is available for almost all objects (numbers, arrays, strings, and dates, etc.).

Syntax:

Number.prototype.name = value

Create a new number method that returns the double precision value of the number:

Number.prototype.getTwice = function() {
return (this.valueOf()　*　2);
};

Use the new method for numbers:

var a =　25;
var b = a.getTwice();//　Invoke a new method

Test and see‹/›

Browser Compatibility

All browsers fully support the prototype property:

　JavaScript Number Object