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I don’t understand how and from where are we able to access name & department properties when in class we have used _name & _department as property names.
Please help me understand if i have any concept gap in between. TIA
Hello, just wondering why console.log(surgeonCurry._remainingVacationDays) doesn’t print 20 instead of 17, since in the preceding step we took 3 days off of the .remainingVacationDays (the getter)? I thought using a getter was supposed to be a way of preserving the original Object?
No, that is not what getters are for. Getters allow us to change the behavior of a property. For example, a property could have an array value, but we could use getter to return a string instead.
I added some setters to the code for this section and for some reason now when the takeVacationDays method does not seem to change the value of _remainingVacationDays:
class Surgeon {
constructor(name, department) {
this._name = name;
this._department = department;
this._remainingVacationDays = 20;
}
get name(){
if (typeof this._name === "string"){
return this._name;
} else{
console.log("Error: could not retrieve name")
}
}
set name (newName){
if (typeof newName === "string"){
this._name = newName;
}else{
console.log("Error: new name must be a string");
}
}
get department(){
if (typeof this._department === "string"){
return this._department;
} else{
console.log("Error: could not retrieve department")
}
}
set department (newDepartment){
if (typeof newDepartment === "string"){
this._department = newDepartment;
}else{
console.log("Error: new department must be a string");
}
}
get remainingVacationDays(){
if (typeof this._remainingVacationDays === "number"){
return this._remainingVacationDays;
} else{
console.log("Error: could not retrieve number of remaining vacation days")
}
}
set remainingVacationDays (newNumber){
if (typeof newNumber === "number"){
this._name = newNumber;
}else{
console.log("Error: new number of vacation days must be a number");
}
}
takeVacationDays(daysOff){
if (typeof daysOff === "number"){
this.remainingVacationDays = this.remainingVacationDays - daysOff;
}else{
console.log("Error: number of days off must be a number");
}
}
}
const surgeonCurry = new Surgeon('Curry', 'Cardiovascular');
const surgeonDurant = new Surgeon('Durant', 'Orthopedics');
console.log(surgeonCurry.name)
surgeonCurry.takeVacationDays(3)
console.log(surgeonCurry.remainingVacationDays)
this looks fine. (you can log if you want). So where does this take us? assignment will trigger the setter:
set remainingVacationDays (newNumber){
if (typeof newNumber === "number"){
this._name = newNumber;
}else{
console.log("Error: new number of vacation days must be a number");
}
}
it seems the setter doesn’t update the right property
Can anyone explain this?
Like we haven’t declared the properties anywhere in the class and what’s the point of adding _ in front of the property name anyway?
Can’t we use the normal variables for properties?
This is very confusing.
Someone please help .
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