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Adam, the developer answered on January 19, 2022 Popularity 8/10 Helpfulness 1/10

answer js class extends

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js class extends

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<!DOCTYPE html>
<html>
<body>

<h2>JavaScript Class Inheritance</h2>

<p>Use the "extends" keyword to inherit all methods from another class.</p>
<p>Use the "super" method to call the parent's constructor function.</p>

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

<script>
class Car {
  constructor(brand) {
    this.carname = brand;
  }
  present() {
    return 'I have a ' + this.carname;
  }
}

class Model extends Car {
  constructor(brand, mod) {
    super(brand);
    this.model = mod;
  }
  show() {
    return this.present() + ', it is a ' + this.model;
  }
}

mycar = new Model("Ford", "Mustang");
document.getElementById("demo").innerHTML = mycar.show();
</script>

</body>
</html>

Popularity 8/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: class extends javascript

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Contributed on Feb 14 2023

Adam, the developer

0 Answers Avg Quality 2/10

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javascript class extends

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class Parent {
	constructor(name){
      this.name = name;
    }
}

class Child extends Parent {
  	constructor(name, school){
    	super(name); // Super must be called before setting child options
      	this.school = school;
    }
}

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: class clas

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Contributed on Jan 19 2022

I_Like_Cats__

0 Answers Avg Quality 2/10

JavaScript Demo: Classes Extends

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class DateFormatter extends Date {

  getFormattedDate() {
    const months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
      'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
    return `${this.getDate()}-${months[this.getMonth()]}-${this.getFullYear()}`;
  }

}

console.log(new DateFormatter('August 19, 1975 23:15:30').getFormattedDate());
// Expected output: "19-Aug-1975"

Popularity 8/10 Helpfulness 1/10 Language javascript

Source: developer.mozilla.org

Tags: extends javascript javas

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Contributed on Mar 12 2023

Imran Khan

0 Answers Avg Quality 2/10

js class extends

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javascript class extends

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