JavaScript Array prototype property

　JavaScript Array Object

PrototypeProperties allow you to add properties and methods to the Array() object.

Note:The prototype is a global property that is available for almost all objects (numbers, booleans, strings, dates, etc.).

Syntax:

Array.prototype.name = value

This example creates a new array method that converts array values to uppercase letters:

Array.prototype.upper = function() {
for (var i = 0; i < this.length; i++) {
　　　　this[i] = this[i].toUpperCase();
}
};

Then create an array and call the upper() method:

var fruits = ['Banana', 'Mango', 'Apple'];
fruits.upper();

Test and See‹/›

Browser Compatibility

All browsers fully support the prototype property:

More Examples

The following example uses the prototype property to add properties to the fruits object:

Array.prototype.creator = 'ME';

　JavaScript Array Object