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Object-Oriented Programming in JavaScript
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Object-Oriented Programming in JavaScript

Object-Oriented Programming in JavaScript

1. Classes & Objects
ClassesClass AttributesClass MethodsObjects' Creating Keyword 'this'Constructor
2. Encapsulation
Private ModifierGet and Set
3. Static
Static AttributesStatic Functions
4. Inheritance
What is an InheritanceConstructor InheritanceOverriding

bookKeyword 'this'

You can refer to the attributes not only outside the class but inside, too, for example, inside methods. To do that, use this keyword. this is like a name of object, but it means the current object, i. e. it refers to the global object.

Let's change current age of the student each time we call happyBirthday() function, and print it:


              
123456789101112131415

            
class Student{
  name = 'June';
  university = 'MIT';
  age = 18;
  gpa;
  sleep(){
    console.log('I am sleeping right now!')
  }
  happyBirthday(){
    this.age += 1;
    console.log('Today is my birthday! I am', this.age, 'yrs old!');
  }
}
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Tarefa

Modify happyBirthday() function: output info about new age and about name of the student. After that, create an object of class Student, and call this method three times to see what happens with age.

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Seção 1. Capítulo 5
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bookKeyword 'this'

You can refer to the attributes not only outside the class but inside, too, for example, inside methods. To do that, use this keyword. this is like a name of object, but it means the current object, i. e. it refers to the global object.

Let's change current age of the student each time we call happyBirthday() function, and print it:


              
123456789101112131415

            
class Student{
  name = 'June';
  university = 'MIT';
  age = 18;
  gpa;
  sleep(){
    console.log('I am sleeping right now!')
  }
  happyBirthday(){
    this.age += 1;
    console.log('Today is my birthday! I am', this.age, 'yrs old!');
  }
}
copy

Tarefa

Modify happyBirthday() function: output info about new age and about name of the student. After that, create an object of class Student, and call this method three times to see what happens with age.

Switch to desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 1. Capítulo 5
toggle bottom row

bookKeyword 'this'

You can refer to the attributes not only outside the class but inside, too, for example, inside methods. To do that, use this keyword. this is like a name of object, but it means the current object, i. e. it refers to the global object.

Let's change current age of the student each time we call happyBirthday() function, and print it:


              
123456789101112131415

            
class Student{
  name = 'June';
  university = 'MIT';
  age = 18;
  gpa;
  sleep(){
    console.log('I am sleeping right now!')
  }
  happyBirthday(){
    this.age += 1;
    console.log('Today is my birthday! I am', this.age, 'yrs old!');
  }
}
copy

Tarefa

Modify happyBirthday() function: output info about new age and about name of the student. After that, create an object of class Student, and call this method three times to see what happens with age.

Switch to desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

You can refer to the attributes not only outside the class but inside, too, for example, inside methods. To do that, use this keyword. this is like a name of object, but it means the current object, i. e. it refers to the global object.

Let's change current age of the student each time we call happyBirthday() function, and print it:


              
123456789101112131415

            
class Student{
  name = 'June';
  university = 'MIT';
  age = 18;
  gpa;
  sleep(){
    console.log('I am sleeping right now!')
  }
  happyBirthday(){
    this.age += 1;
    console.log('Today is my birthday! I am', this.age, 'yrs old!');
  }
}
copy

Tarefa

Modify happyBirthday() function: output info about new age and about name of the student. After that, create an object of class Student, and call this method three times to see what happens with age.

Switch to desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
Seção 1. Capítulo 5
Switch to desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
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