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class_extend.js
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class_extend.js
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var util = require('util');
class Character {
constructor(x,y) {
this.x = x;
this.y = y;
this.health_ = 100;
}
damage() {
this.health_ = this.health_ - 10;
}
getHealth() {
return this.health_
}
toString() {
return "x: " + this.x + " y: " + this.y + " health: " + this.getHealth();
}
}
class Player extends Character {
constructor(x ,y ,name) {
super(x,y)
this.name = name;
}
move(dx,dy) {
this.x += dx;
this.y += dy;
}
toString() {
return "name: " + this.name + " " + super.toString();
}
}
var x = process.argv[2];
var y = process.argv[3];
var name = process.argv[4];
var character = new Character(+x, +y);
character.damage();
console.log(character.toString());
var player = new Player(+x, +y, name);
player.damage();
player.move(7, 8);
console.log(player.toString());