Array prototype Constructor - Javascript Array

Javascript examples for Array:prototype Constructor

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Description

The prototype constructor can add new properties and methods to the Array() object.

Array.prototype refers to the Array() object itself.

Syntax

The following code shows how to Make a new array method that transforms array values into upper case:

Demo Code

ResultView the demo in separate window 

<!DOCTYPE html>
<html>
<body>

<button onclick="myFunction()">Test</button>

<p id="demo"></p>

<script>
Array.prototype.myUcase = function() {
    var i;
    for (i = 0; i < this.length; i++) {
        this[i] = this[i].toUpperCase();
    }/*from  w w w  .j ava  2  s .  com*/
};

function myFunction() {
    var fruits = ["a","b","c","d","e"];
    fruits.myUcase();
    document.getElementById("demo").innerHTML = fruits;
}
</script>

</body>
</html>

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