JavaScript object-oriented class inheritance case explanation

1. Object-oriented class inheritance

In the above chapters, we have seen that JavaScript's object model is based on prototype implementation. Its characteristic is simplicity, but its disadvantage is that it is more difficult to understand than the traditional class-instance model. The biggest disadvantage is that the implementation of inheritance requires writing a lot of code and correctly implementing the prototype chain.

Is there a simpler way to write it? have!

Let's first review how to implement Student using functions:

    function Student(name) {
        this.name = name;
    }

    // Now we need to add a method to this Student Student.prototype.hello = function () {
        alert('Hello, ' + this.name + '!');
    }
    
    Student.prototype.hello.apply(new Student("Xiao Ming")); 

If we use the new class keyword to write Student, we can write it like this:

Finally, create a Student object with the same code as in the previous section:

Class inheritance

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