how to use java script classes in java script with example

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java script classes with example

how to use java script classes in java script with example

Examples
<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Classes</h1>
<p>Creating two car objects from a car class:</p>
<p id="demo"></p>
<script>
class Car {
constructor(name, year) {
this.name = name;
this.year = year;
}
}
const myCar1 = new Car("Ford", 2014);
const myCar2 = new Car("Audi", 2019);
document.getElementById("demo").innerHTML =
myCar1.name + " " + myCar2.name;
</script>
</body>
</html>

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Class Methods</h1>
<p>How to define and use a Class method.</p>
<p id="demo"></p>
<script>
class Car {
constructor(name, year) {
this.name = name;
this.year = year;
}
age() {
const date = new Date();
return date.getFullYear() - this.year;
}
}
const myCar = new Car("Ford", 2014);
document.getElementById("demo").innerHTML =
"My car is " + myCar.age() + " years old.";
</script>
</body>
</html>

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Class Method</h1>
<p>Pass a parameter into the "age()" method.</p>
<p id="demo"></p>
<script>
class Car {
constructor(name, year) {
this.name = name;
this.year = year; }
age(x) {
return x - this.year;
}
}
const date = new Date();
let year = date.getFullYear();
const myCar = new Car("Ford", 2014);
document.getElementById("demo").innerHTML=
"My car is " + myCar.age(year) + " years old.";
</script>
</body>
</html>

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This document provides an overview of object-oriented programming concepts in JavaScript. It discusses that JavaScript is an object-oriented language that uses prototypes instead of classes. It explains JavaScript's core data types including strings, numbers, Booleans, and objects. It also covers creating custom objects with prototypes, defining methods and properties, public and private members, and inheritance using closures and prototyping. Memory management with closures and the module pattern are also summarized.

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how to use java script classes in java script with example

1. Java Script Classes By Manthan khopkar

17. Examples <!DOCTYPE html> <html> <body> <h1>JavaScript Classes</h1> <p>Creating two car objects from a car class:</p> <p id="demo"></p> <script> class Car { constructor(name, year) { this.name = name; this.year = year; } } const myCar1 = new Car("Ford", 2014); const myCar2 = new Car("Audi", 2019); document.getElementById("demo").innerHTML = myCar1.name + " " + myCar2.name; </script> </body> </html>

18. <!DOCTYPE html> <html> <body> <h1>JavaScript Class Methods</h1> <p>How to define and use a Class method.</p> <p id="demo"></p> <script> class Car { constructor(name, year) { this.name = name; this.year = year; } age() { const date = new Date(); return date.getFullYear() - this.year; } } const myCar = new Car("Ford", 2014); document.getElementById("demo").innerHTML = "My car is " + myCar.age() + " years old."; </script> </body> </html>

19. <!DOCTYPE html> <html> <body> <h1>JavaScript Class Method</h1> <p>Pass a parameter into the "age()" method.</p> <p id="demo"></p> <script> class Car { constructor(name, year) { this.name = name; this.year = year; } age(x) { return x - this.year; } } const date = new Date(); let year = date.getFullYear(); const myCar = new Car("Ford", 2014); document.getElementById("demo").innerHTML= "My car is " + myCar.age(year) + " years old."; </script> </body> </html>

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