Keyword '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:
123456789101112131415class 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!'); } }
Swipe to start coding
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.
Ratkaisu
Vaihda työpöytään todellista harjoitusta vartenJatka siitä, missä olet käyttämällä jotakin alla olevista vaihtoehdoistaKiitos palautteestasi!
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Completion rate improved to 7.69Keyword '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:
123456789101112131415class 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!'); } }
Swipe to start coding
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.
Ratkaisu
Vaihda työpöytään todellista harjoitusta vartenJatka siitä, missä olet käyttämällä jotakin alla olevista vaihtoehdoistaKiitos palautteestasi!
single
Awesome!
Completion rate improved to 7.69Keyword 'this'
Pyyhkäise näyttääksesi valikon
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:
123456789101112131415class 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!'); } }
Swipe to start coding
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.
Ratkaisu
Vaihda työpöytään todellista harjoitusta vartenJatka siitä, missä olet käyttämällä jotakin alla olevista vaihtoehdoistaKiitos palautteestasi!
