New properties and methods can be added to an `Array()` object using the property constructor. Whenever a property is constructed, arrays are given the property and its value as default. When a method is constructed, all arrays will have access to this method. 

# Syntax
```
Array.prototype.name = value
```

# Code

Take a look at the code below:

<!DOCTYPE html>
<html>
<body>

Given an array of chocolates 
["hErSheYs", "MaRS", "Twix"] 

The letters are messy No?

Let's convert these array values to lowercase characters.
<button onclick="myFunction()">Convert</button>



</body>
</html>

Array.prototype.myLcase = function() {
 var i;
 for (i = 0; i < this.length; i++) {
 this[i] = this[i].toLowerCase();
 }
};

function myFunction() {
 var choc = ["hErSheYs", "MaRS", "Twix"];
 choc.myLcase();
 document.getElementById("demo").innerHTML = choc;
}

codemirror

What is Array prototype?

New properties and methods can be added to Array objects using Array.prototype.