在下面的代码片段中，当您单击en“open”按钮时，菜单成功打开，当您单击菜单外部时，菜单成功关闭。但是，如果我单击另一行的“open”按钮，而前一行的菜单仍然打开，则无法完全关闭菜单。
我遇到的问题是，e.stopPropagation()方法阻止了点击冒泡来触发文档onclick事件，该事件负责关闭菜单。然而，我也不能删除e.stopPropagation()，因为它会导致这行document.documentElement.addEventListener("click", handle_click_outside_menu);立即触发，从而导致菜单根本无法打开。
此外，我刚刚注意到，菜单是不关闭时，点击“关闭”按钮也：（

const menu = document.getElementById("menu");
const table = document.getElementById("table");
const option_buttons = Array.from(table.querySelectorAll("button"));
let target_row = null;

table.addEventListener("click", (e) => {
  if (option_buttons.includes(e.target)) {
    e.stopPropagation();

    menu.style.top = e.target.getBoundingClientRect().top + "px";
    menu.style.display = "flex";
    menu.is_open = true;
    
    target_row = e.target.closest(".row");
    target_row.classList.add("selected");

    document.documentElement.addEventListener("click", handle_click_outside_menu);
  }
});

function handle_click_outside_menu(e) {
  if (e.target !== menu && !menu.contains(e.target)) {
    close_menu();
    document.documentElement.removeEventListener("click", handle_click_outside_menu);
  }
}

function close_menu() {
  menu.style.display = "none";
  menu.is_open = false;
  target_row.classList.remove("selected");
  target_row = null;
}

.table {
  overflow: hidden;
}

.row {
  display: flex;
  gap: 2rem;
  padding: 0.5rem 0;
  border-bottom: 0.0625rem solid #ccc;
}
.row .btn_option > span {
  pointer-events: none;
  display: block;
}
.row:not(.selected) .btn_option > span:last-child {
  display: none;
}
.row:is(.selected) .btn_option > span:first-child {
  display: none;
}

.menu {
  display: none;
  position: absolute;
  left: 10rem;
  padding: 0.5rem;
  background: #ccc;
  flex-direction: column;
  gap: 0.5rem;
}

.menu::before {
  content: '';
  position: absolute;
  top: 0;
  left: -0.75rem;
  width: 0;
  height: 0;
  border-top: 0.75rem solid transparent;
  border-bottom: 0.75rem solid transparent;
  border-right: 0.75rem solid #ccc;
}

<div class="table" id="table">
  <div class="row">
    <span>Item 1</span>
    <button class="btn_option" type="button"><span>Open</span><span>Close</span></button>
  </div>
  <div class="row">
    <span>Item 2</span>
    <button class="btn_option" type="button"><span>Open</span><span>Close</span></button>
  </div>
  <div class="row">
    <span>Item 3</span>
    <button class="btn_option" type="button"><span>Open</span><span>Close</span></button>
  </div>
  <div class="row">
    <span>Item 4</span>
    <button class="btn_option" type="button"><span>Open</span><span>Close</span></button>
  </div>
  <div class="row">
    <span>Item 5</span>
    <button class="btn_option" type="button"><span>Open</span><span>Close</span></button>
  </div>
</div>

<div class="menu" id="menu">
  <button type="button">View</button>
  <button type="button">Edit</button>
  <button type="button">Delete</button>
</div>