JavaScript Array Prototype Property
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JavaScript Array Prototype Property
The JavaScript array prototype property allows you to add new properties and methods to the Array() object.
Note: Prototype is a global object constructor which is available for all JavaScript objects.
In the following example, we will create a new method toAlternateCase() to alternate the case of the elements in an array.
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<script>
Array.prototype.toAlternateCase = function() {
for(i=0; i<this.length; i++){
// Get one Element, say, "Aston Martin"
var oneElement = this[i];
var temp = "";
// Convertion takes place here
for(j=0; j<oneElement.length; j++){
if(j % 2 == 0)
temp += oneElement[j].replace(oneElement[j], oneElement[j].toUpperCase());
else
temp += oneElement[j].replace(oneElement[j], oneElement[j].toLowerCase());
}
// Replace Actual string with Converted string
this[i]= temp;
}
};
var myCar = ["Aston Martin", "Jaguar", "Maserati"];
myCar.toAlternateCase();
document.write(myCar[0]);
</script>
</body>
</html>
Syntax
Array.prototype.anyName = function() {
// code
}
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