在html/css中切换按钮链接

<button id="toggleButton">切换链接</button>
<a id="link" href="https://www.example.com">链接</a>

.hidden {
  display: none;
}

var toggleButton = document.getElementById("toggleButton");
var link = document.getElementById("link");

toggleButton.addEventListener("click", function() {
  if (link.classList.contains("hidden")) {
    link.classList.remove("hidden");
  } else {
    link.classList.add("hidden");
  }
});