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Start your free trialChristopher Clemmons
3,476 PointsWhat is _mayor referring to?
I am having an issue understanding what _mayor is referring to. The parameter or the actual setter?
class Student {
constructor(gpa, credits){
this.gpa = gpa;
this.credits = credits;
}
stringGPA() {
return this.gpa.toString();
}
get level() {
if (this.credits > 90 ) {
return 'Senior';
} else if (this.credits > 60) {
return 'Junior';
} else if (this.credits > 30) {
return 'Sophomore';
} else {
return 'Freshman';
}
}
set major(major){
if(this.level === "Senior" || this.level === "Junior"){
this._major = major;
} else { return this._mayor = 'None'; }
}
}
var student = new Student(3.9, 60);
1 Answer
Simon Coates
8,377 PointsI think, using the 'this' keyword means you're operating on the copy stored on the object. It's not the parameter and it's not the setter, it's a backing field. But if should be '_major' not '_mayor'. Here's another example of a getter and setter.
class User {
constructor(name) {
// invokes the setter
this.name = name;
}
get name() {
return this._name;
}
set name(value) {
if (value.length < 4) {
alert("Name is too short.");
return;
}
this._name = value;
}
}
let user = new User("John");
alert(user.name); // John
user._name; //outputs "John"
In this instance, you're meant to interact with the getter and setter, but it demos that there's a field behind the getters and setters.