委托并使用类

我移动了链接，以便它们在 div 打开时不会移动

document.getElementById("container").addEventListener("click", function(e) {
  let tgt = e.target;
  const parent = tgt.closest("a");
  if (tgt.tagName === "IMG" && parent && parent.classList.contains("toggle")) tgt = parent;
  if (tgt.classList.contains("toggle")) {
    e.preventDefault(); // stop link
    tgt.classList.toggle("open");
    const open = tgt.classList.contains("open")
    tgt.querySelector("img").src = open ? "https://img.icons8.com/flat_round/2x/minus.png" : "https://img.icons8.com/flat_round/2x/plus.png";
    document.getElementById(tgt.dataset.id).classList.toggle("hide", !open);
  }
})

.hide {
  display: none;
}

.toggle {
  background-color: #ccc;
  color: white;
}

<div id="container">
  <a class="toggle" href="#" data-id="myLinks">
    <img src="https://img.icons8.com/flat_round/2x/plus.png" height="42" width="42"> travel to
  </a>
  <a class="toggle" href="#" data-id="myLinks2">
    <img src="https://img.icons8.com/flat_round/2x/plus.png" height="42" width="42"> tour type
  </a>

  <div id="myLinks" class="hide">
    <a href="athen.php">----Athens</a>
  </div>
  <div id="myLinks2" class="hide">
    <a href="city.php">----Per city</a>
  </div>
</div>