I try to call parent method but I get error:

Error: call super outside of class constructor

My example :

class xo{
    cool(x){
        console.log(`parent init${x}`)
    }
}
class boo extends xo{
    cool(val){
        super(val);
        console.log(`child init${x}`)
    }
}

x = new boo;

I try to call parent method but I get error:

Error: call super outside of class constructor

My example :

class xo{
    cool(x){
        console.log(`parent init${x}`)
    }
}
class boo extends xo{
    cool(val){
        super(val);
        console.log(`child init${x}`)
    }
}

x = new boo;

• javascript
• ecmascript-6

2 Answers 2

You call not the parent method, but parent constructor which is not valid call outside of the constructor. You need to use super.cool(val); instead of super(val);

class xo{

    cool(x) {
        console.log(`parent init${x}`)
    }

}

class boo extends xo {

    cool(val) {
        super.cool(val);
        console.log(`child init${x}`)
    }

}

x = new boo();

Use super.cool(val) instead to call the cool method on the super class. super() invokes the super class' constructor.