javascript 这个Js工具条菜单有什么问题吗

子菜单将不显示/打开在侧边栏我试图改变侧边栏子菜单onclick功能，以包括
1.而不是菜单箭头。这不起作用。我也不知道很多javascripting，但我计划学习。我需要找出这个问题的解决方案。为什么函数不起作用？css代码是.show而不是单独的li类名与单独的函数也有问题吗？我需要做一个更好的函数来切换侧边栏中的子菜单，如果是这样的话，正确的方法是什么？

// search-box open close js code
let navbar = document.querySelector(".navbar");
let searchBox = document.querySelector(".search-box .bx-search");
// let searchBoxCancel = document.querySelector(".search-box .bx-x");

searchBox.addEventListener("click", () => {
  navbar.classList.toggle("showInput");
  if (navbar.classList.contains("showInput")) {
    searchBox.classList.replace("bx-search", "bx-x");
  } else {
    searchBox.classList.replace("bx-x", "bx-search");
  }
});

// sidebar open close js code
let navLinks = document.querySelector(".nav-links");
let menuOpenBtn = document.querySelector(".navbar .bx-menu");
let menuCloseBtn = document.querySelector(".nav-links .bx-x");
menuOpenBtn.onclick = function() {
  navLinks.style.left = "0";
}

/* Googlefont Poppins CDN Link */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@200;300;400;500;600;700&display=swap');
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  min-height: 100vh;
}

nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  height: 70px;
  background: #3E8DA8;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  z-index: 99;
}

nav .navbar {
  height: 100%;
  max-width: 1250px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: auto;
  /* background: red; */
  padding: 0 50px;
}

.navbar .logo a {
  font-size: 30px;
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

nav .navbar .nav-links {
  line-height: 70px;
  height: 100%;
}

nav .navbar .links {
  display: flex;
}

nav .navbar .links li {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  padding: 0 14px;
}

nav .navbar .links li a {
  height: 100%;
  text-decoration: none;
  white-space: nowrap;
  color: #fff;
  font-size: 15px;
  font-weight: 500;
}

.links li:hover .htmlcss-arrow,
.links li:hover .js-arrow {
  transform: rotate(180deg);
}

nav .navbar .links li .arrow {
  /* background: red; */
  height: 100%;
  width: 22px;
  line-height: 70px;
  text-align: center;
  display: inline-block;
  color: #fff;
  transition: all 0.3s ease;
}

nav .navbar .links li .sub-menu {
  position: absolute;
  top: 70px;
  left: 0;
  line-height: 40px;
  background: #3E8DA8;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  border-radius: 0 0 4px 4px;
  display: none;
  z-index: 2;
}

nav .navbar .links li:hover .htmlCss-sub-menu,
nav .navbar .links li:hover .js-sub-menu {
  display: block;
}

.navbar .links li .sub-menu li {
  padding: 0 22px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar .links li .sub-menu a {
  color: #fff;
  font-size: 15px;
  font-weight: 500;
}

.navbar .links li .sub-menu .more-arrow {
  line-height: 40px;
}

.navbar .links li .htmlCss-more-sub-menu {
  /* line-height: 40px; */
}

.navbar .links li .sub-menu .more-sub-menu {
  position: absolute;
  top: 0;
  left: 100%;
  border-radius: 0 4px 4px 4px;
  z-index: 1;
  display: none;
}

.links li .sub-menu .more:hover .more-sub-menu {
  display: block;
}

.navbar .search-box {
  position: relative;
  height: 40px;
  width: 40px;
}

.navbar .search-box i {
  position: absolute;
  height: 100%;
  width: 100%;
  line-height: 40px;
  text-align: center;
  font-size: 22px;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.navbar .search-box .input-box {
  position: absolute;
  right: calc(100% - 40px);
  top: 80px;
  height: 60px;
  width: 300px;
  background: #3E8DA8;
  border-radius: 6px;
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s ease;
}

.navbar.showInput .search-box .input-box {
  top: 65px;
  opacity: 1;
  pointer-events: auto;
  background: #3E8DA8;
}

.search-box .input-box::before {
  content: '';
  position: absolute;
  height: 20px;
  width: 20px;
  background: #3E8DA8;
  right: 10px;
  top: -6px;
  transform: rotate(45deg);
}

.search-box .input-box input {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 4px;
  transform: translate(-50%, -50%);
  height: 35px;
  width: 280px;
  outline: none;
  padding: 0 15px;
  font-size: 16px;
  border: none;
}

.navbar .nav-links .sidebar-logo {
  display: none;
}

.navbar .bx-menu {
  display: none;
}

@media (max-width:920px) {
  nav .navbar {
    max-width: 100%;
    padding: 0 25px;
  }
  nav .navbar .logo a {
    font-size: 27px;
  }
  nav .navbar .links li {
    padding: 0 10px;
    white-space: nowrap;
  }
  nav .navbar .links li a {
    font-size: 15px;
  }
}

@media (max-width:800px) {
  nav {
    /* position: relative; */
  }
  .navbar .bx-menu {
    display: block;
  }
  nav .navbar .nav-links {
    position: fixed;
    top: 0;
    left: -100%;
    display: block;
    max-width: 270px;
    width: 100%;
    background: #3E8DA8;
    line-height: 40px;
    padding: 20px;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
    transition: all 0.5s ease;
    z-index: 1000;
  }
  .navbar .nav-links .sidebar-logo {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .sidebar-logo .logo-name {
    font-size: 25px;
    color: #fff;
  }
  .sidebar-logo i,
  .navbar .bx-menu {
    font-size: 25px;
    color: #fff;
  }
  nav .navbar .links {
    display: block;
    margin-top: 20px;
  }
  nav .navbar .links li .arrow {
    line-height: 40px;
  }
  nav .navbar .links li {
    display: block;
  }
  nav .navbar .links li .sub-menu {
    position: relative;
    top: 0;
    box-shadow: none;
    display: none;
  }
  nav .navbar .links li .sub-menu li {
    border-bottom: none;
  }
  .navbar .links li .sub-menu .more-sub-menu {
    display: none;
    position: relative;
    left: 0;
  }
  .navbar .links li .sub-menu .more-sub-menu li {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .links li:hover .htmlcss-arrow,
  .links li:hover .js-arrow {
    transform: rotate(0deg);
  }
  .navbar .links li .sub-menu .more-sub-menu {
    display: none;
  }
  .navbar .links li .sub-menu .more span {
    /* background: red; */
    display: flex;
    align-items: center;
    /* justify-content: space-between; */
  }
  .links li .sub-menu .more:hover .more-sub-menu {
    display: none;
  }
  nav .navbar .links li:hover .htmlCss-sub-menu,
  nav .navbar .links li:hover .js-sub-menu {
    display: none;
  }
  .navbar .nav-links.show1 .links .htmlCss-sub-menu,
  .navbar .nav-links.show3 .links .js-sub-menu,
  .navbar .nav-links.show2 .links .more .more-sub-menu {
    display: block;
  }
  .navbar .nav-links.show1 .links .htmlcss-arrow,
  .navbar .nav-links.show3 .links .js-arrow {
    transform: rotate(180deg);
  }
  .navbar .nav-links.show2 .links .more-arrow {
    transform: rotate(90deg);
  }
}

@media (max-width:370px) {
  nav .navbar .nav-links {
    max-width: 100%;
  }
}

<head>
  <meta charset="UTF-8">
  <link rel="stylesheet" href="style.css">
  <!-- Boxicons CDN Link -->
  <link href='https://unpkg.com/boxicons@2.0.7/css/boxicons.min.css' rel='stylesheet'>
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>

<body>
  <nav>
    <div class="navbar">
      <i class='bx bx-menu'></i>
      <div class="logo"><a href="#">CodingLab</a></div>
      <div class="nav-links">
        <div class="sidebar-logo">
          <span class="logo-name">CodingLab</span>
          <i class='bx bx-x'></i>
        </div>
        <ul class="links">
          <li><a href="#">HOME</a></li>
          <li>
            <a href="#">HTML & CSS</a>
            <i class='bx bxs-chevron-down htmlcss-arrow arrow  '></i>
            <ul class="htmlCss-sub-menu sub-menu">
              <li><a href="#">Web Design</a></li>
              <li><a href="#">Login Forms</a></li>
              <li><a href="#">Card Design</a></li>
              <li class="more">
                <span><a href="#">More</a>
                <i class='bx bxs-chevron-right arrow more-arrow'></i>
              </span>
                <ul class="more-sub-menu sub-menu">
                  <li><a href="#">Neumorphism</a></li>
                  <li><a href="#">Pre-loader</a></li>
                  <li><a href="#">Glassmorphism</a></li>
                </ul>
              </li>
            </ul>
          </li>
          <li>
            <a href="#">JAVASCRIPT</a>
            <i class='bx bxs-chevron-down js-arrow arrow '></i>
            <ul class="js-sub-menu sub-menu">
              <li><a href="#">Dynamic Clock</a></li>
              <li><a href="#">Form Validation</a></li>
              <li><a href="#">Card Slider</a></li>
              <li><a href="#">Complete Website</a></li>
            </ul>
          </li>
          <li><a href="#">ABOUT US</a></li>
          <li><a href="#">CONTACT US</a></li>
        </ul>
      </div>
      <div class="search-box">
        <i class='bx bx-search'></i>
        <div class="input-box">
          <input type="text" placeholder="Search...">
        </div>
      </div>
    </div>
  </nav>
  <!--<script src="script.js"></script>-->
</body>

javascript 这个Js工具条菜单有什么问题吗

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