Javascript/CSS 显示样式不会改变

Question

const hamburgerMenuBtn = document.getElementById("hamburger-menu-button");

hamburgerMenuBtn.addEventListener("click", function() {
  hamburgerPopupToggle()
});

function hamburgerPopupToggle() {
  console.log("Button pressed");
  const hamburgerMenuPopup = document.getElementById("hamburger-menu-popup");
  if (hamburgerMenuPopup.style.display === "block") {
    hamburgerMenuPopup.style.display = "none";
    console.log(hamburgerMenuPopup.style.display);
  } else {
    hamburgerMenuPopup.style.display = "block";
    console.log(hamburgerMenuPopup.style.display);
  }
}

#hamburger-menu-popup { display: none; }

<div class="hamburger-menu">
  <span id="hamburger-menu-button">menu</span>
  <div id="hamburger-menu-popup">
    <div id="home-button">Home</div>
    <div id="create-post">Create a Post</div>
  </div>
</div>

弹出窗口打开 (https://i.sstatic.net/4hlVl4VL.png) 但是，它不是将显示样式设置回“无”，而是将其设置为“取消设置！重要”，但它记录它是“无”(https://i.sstatic.net/DadeuwQ4.png)( https://i.sstatic.net/bmL9RzHU.png）

因此，由于某种原因它记录了应该发生的事情，但 CSS 没有任何改变。 （有变化，但没有想象中的那么好）

Answer 1

请尝试这样：

const hamburgerMenuBtn = document.getElementById("hamburger-menu-button");

hamburgerMenuBtn.addEventListener('click', event => {
   let hamburgerMenuPopup = document.getElementById("hamburger-menu-popup");
    if (hamburgerMenuPopup.style.display === "none") {
        document.getElementById("hamburgerMenuPopup").style.display = "block";
    } else {
        document.getElementById("hamburgerMenuPopup").style.display = "none";
    }
});

const hamburgerMenuBtn = document.getElementById("hamburger-menu-button");

hamburgerMenuBtn.addEventListener('click', event => {
   let hamburgerMenuPopup = document.getElementById("hamburger-menu-popup");
    if (hamburgerMenuPopup.style.display === "none") {
        document.getElementById("hamburgerMenuPopup").style.display = "block";
    } else {
        document.getElementById("hamburgerMenuPopup").style.display = "none";
    }
});

<div class="hamburger-menu">
  <span id="hamburger-menu-button">menu</span>
  <div id="hamburger-menu-popup">
    <div id="home-button">Home</div>
    <div id="create-post">Create a Post</div>
  </div>
</div>

#hamburger-menu-popup { display: none; }