前端基础数据结构和算法---链表

创建链表

    function LinkedList() {
        let Node = function(element) {
            this.element = element;
            this.next = null;
        };
        
        let length = 0;
        let head = null;
        
        this.append = function(element){};
        this.insert = function(position,element){};
        
        this.removeAt = function(position){};
        this.remove = function(element){};
        this.indexOf = function(element){};
        this.isEmpty = function(){};
        this.size = function(){};
        this.getHead = function(){};
        this.toString = function(){};
    }