I don't know why this 'this' method doesn't work?
Question
const list = {
name: 'Harry Potter',
birthYear: 1995,
calcAge: function () {
this.age = 2002 - this.birthYear;
return this.age;
}
};
console.log(list.age);
5 answers
solution1
1 2022-05-16 19:59:12
You are storing a function, not calling it that's why it should print you undefined . To fix it you should call it with list.calcAge() .
Your code works and this.age = 2002 - this.birthYear creates the property you want, you just need to call it before using it.
const list = {
name: 'Harry Potter',
birthYear: 1995,
calcAge: function () {
this.age = 2002 - this.birthYear;
return this.age;
}
};
list.calcAge()
console.log(list.age);
solution2
1 2022-05-16 20:04:28
Call your function. list.calcAge() You can print it like this console.log(list.calcAge()) You were close though!!
solution3
1 2022-05-16 20:34:47
const list = { name: 'Harry Potter', birthYear: 1995, calcAge() { this.age = 2002 - this.birthYear; return this.age; }, }; console.log(list.calcAge());
solution4
1 2022-05-16 21:31:08
Try this. It will work.
const list = { name: 'Harry Potter', birthYear: 1995, calcAge: function () { this.age = 2002 - this.birthYear; return this.age; }, }; console.log(list.calcAge());
Try calling list.calcAge() in your console
solution5
-2 2022-05-16 20:21:28
the calcAge is function property so you must be treated as a function list.calcAge()
const list = { name: 'Harry Potter', birthYear: 1995, calcAge: function () { this.age = 2002 - this.birthYear; return this.age; } }; document.getElementById("name").innerHTML = list.name; document.getElementById("birthYear").innerHTML = list.birthYear; document.getElementById("age").innerHTML = list.calcAge();
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> </head> <body> <p id="name"></p> <p id="birthYear"></p> <p id="age"></p> </body> </html>
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