function prototype javascript
/*Prototype is used to add properties/methods to a
constructor function as in example below */
function ConstructorFunction(name){
this.name = name //referencing to current executing object
}
ConstructorFunction.prototype.age = 18
let objectName = new ConstructorFunction("Bob")
console.log(objectName.age) //18
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4.25
4
function Person(name) {
this.name = name;
}
Person.prototype.getName = function() {
return this.name;
}
var person = new Person("John Doe");
person.getName() //"John Doe"
Thank you!
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5
function Person(first, last, age, eye) {
this.firstName = first;
this.lastName = last;
this.age = age;
this.eyeColor = eye;
}
Person.prototype.nationality = "English";
var myFather = new Person("John", "Doe", 50, "blue");
console.log("The nationality of my father is " + myFather.nationality)
Thank you!
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3
// function prototype
void add(int, int);
int main() {
// calling the function before declaration.
add(5, 3);
return 0;
}
// function definition
void add(int a, int b) {
cout << (a + b);
}
Thank you!
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/* Answer to: "javascript prototype explained" */
/*
The prototype object is special type of enumerable object to
which additional properties can be attached to it which will be
shared across all the instances of it's constructor function.
So, use prototype property of a function in the above example
in order to have age properties across all the objects as
shown below:
*/
function Student() {
this.name = 'John';
this.gender = 'M';
}
Student.prototype.age = 15;
var studObj1 = new Student();
alert(studObj1.age); // 15
var studObj2 = new Student();
alert(studObj2.age); // 15
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4
0
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