页面刷新时导航条链接更改颜色(Bootstrap)

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#">Logo</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  <div class="collapse navbar-collapse" id="navbarNav">
    <ul class="navbar-nav">
      <li class="nav-item">
        <a class="nav-link" id="link1" href="#">Link 1</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" id="link2" href="#">Link 2</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" id="link3" href="#">Link 3</a>
      </li>
    </ul>
  </div>
</nav>

$(document).ready(function() {
  // 监听页面刷新事件
  $(window).bind('beforeunload', function() {
    // 获取当前页面的URL
    var currentUrl = window.location.href;
    
    // 根据URL判断需要更改颜色的链接
    if (currentUrl.includes("link1")) {
      $("#link1").css("color", "red");
    } else if (currentUrl.includes("link2")) {
      $("#link2").css("color", "blue");
    } else if (currentUrl.includes("link3")) {
      $("#link3").css("color", "green");
    }
  });
});

.navbar-nav .nav-link {
  color: #333;
}

.navbar-nav .nav-link:hover {
  color: #ff0000;
}