链表删除删除javascript中console.log之前的节点

// 定义链表节点
class Node {
  constructor(data) {
    this.data = data;
    this.next = null;
  }
}

// 定义链表类
class LinkedList {
  constructor() {
    this.head = null;
  }

  // 在链表末尾添加节点
  append(data) {
    const newNode = new Node(data);

    if (!this.head) {
      this.head = newNode;
    } else {
      let current = this.head;
      while (current.next) {
        current = current.next;
      }
      current.next = newNode;
    }
  }

  // 删除目标节点之前的节点
  deleteBeforeConsoleLog() {
    if (!this.head) {
      return;
    }

    let current = this.head;
    let previous = null;

    while (current && current.data !== 'console.log') {
      previous = current;
      current = current.next;
    }

    if (current && previous) {
      previous.next = current.next;
    }
  }
}

// 创建链表实例
const linkedList = new LinkedList();

// 向链表中添加节点
linkedList.append('var a = 1;');
linkedList.append('console.log(a);');
linkedList.append('var b = 2;');
linkedList.append('console.log(b);');
linkedList.append('var c = 3;');

// 删除目标节点之前的节点
linkedList.deleteBeforeConsoleLog();

// 打印链表
let current = linkedList.head;
while (current) {
  console.log(current.data);
  current = current.next;
}