LinkedList Javascript

linkedList.js

function LinkedList() {
    this.list = null;
    this.length = 0;
}

LinkedList.prototype.add = function(value) {
    if( this.list === null ) {
        this.list = this._node(value);  
    }
    else {
        var currentNode = this.list;

        while(currentNode.next !== null) {
            currentNode = currentNode.next;
        }

        currentNode.next = this._node(value);
    }

    this.length++;

    return this;
}

LinkedList.prototype._node = function(value) {
    return {
        value: value,
        next: null
    }
}

LinkedList.prototype.toString = function(node) {
    if(!node) {
        node = this.list;
    }
    
    console.log(node.value);

    if(node.next !== null) {
        this.toString(node.next);
    }
}


var ll = new LinkedList();
ll.add(10).add(20).add(30).add('hola').toString();