Question

How to use class method overriding in TypeScript

Answer 1

class Car {
    cType: string;
        
    constructor(ctype: string) {
        this.cType = ctype;
    }
    
    run(cost:number = 0) {
        console.log(this.cType + " " + cost);
    }
}

class Lexus extends Car {
    
    constructor(ctype: string) {
        super(ctype);
    }
    
    run(cost = 91830) {
        console.log('class Lexus extends Car')
        super.run(cost);
    }
}

class Ram extends Car {
    
    constructor(ctype: string) {
        super(ctype);
    }
    
    run(cost = 58645) {
        console.log('class Ram extends Car')
        super.run(cost);
    }
}

let mObj = new Lexus("Lexus LX 2021");
let rObj = new Ram("Ram 1500 2021")

mObj.run(); 
rObj.run(); 


    
 

    
/*
    
run:
    
"class Lexus extends Car" 
"Lexus LX 2021 91830" 
"class Ram extends Car" 
"Ram 1500 2021 58645" 
   
*/

 

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