I'm learning the Codecademy Advanced JavaScript course, I'm learning about classes.
In their code, I feel this.variable and this._variable have no different but they require to write this.variable even though 2 options return the same output.
Can you please explain the differences if you understand this?
These are some examples of code
class Dog {
constructor(name) {
this._name = name
}
}
Is it different from:
class Dog {
constructor(name) {
this.name = name
}
}
**
1.Names can contain letters, digits, underscores, and dollar signs. 2.Names must begin with a letter Names can also begin with $ and _ 3.Names are case sensitive(y and Y are different variables)
**
Define variables preceded by an underscore is just a convention to mark them as private, but javascript doesn't support encapsulation so this is only for helping the developer identify private variables.
In this post you have a similar question: Is the underscore prefix for property and method names merely a convention?