trying out javascript class

jsClass.js

class TNode {

	constructor (value) {
		this.value = value;
		this.left = null;
		this.right = null;
	}

	print (level=0) {

		let c = level * 2;
		while(c > 0) {
			process.stdout.write('- ');
			c--;
		}
		process.stdout.write(`${this.value} \n`);

		if (this.left) {
			this.left.print(level + 1);
		}

		if (this.right) {
			this.right.print(level + 1);
		}
	}

}

let root = new TNode(0);
let l1 = new TNode(10);
let r1 = new TNode(100);
root.left = l1;
root.right = r1;


let l2 = new TNode(11);
let r2 = new TNode(12);
l1.left = l2;
l1.right = r2;

l2.left = new TNode(20);

r2.left = new TNode(30);
r2.right = new TNode(31);

let l3 = new TNode(101);
let r3 = new TNode(102);
r1.left = l3;
r1.right = r3;

root.print();


// 0 
// - - 10 
// - - - - 11 
// - - - - - - 20 
// - - - - 12 
// - - - - - - 30 
// - - - - - - 31 
// - - 100 
// - - - - 101 
// - - - - 102 
// [Finished in 0.1s]