javascript - 如何在单击时关闭此菜单？

Question

到目前为止，我已经成功地通过菜单图标打开和关闭菜单。但我想在任何点击时关闭它。我不知所措如何解决这个问题。我试图在 window/document/header/nav 上添加一个点击事件监听器......但它似乎立即关闭菜单，然后才选择任何东西。你会如何处理这个问题？

let nav = document.querySelector(".header__nav");

function toggleNavOn() {
  if (nav.style.visibility === "") {
    nav.style.visibility = "visible";
  } else {
    nav.style.visibility = "";
  }
  navToggle.classList.toggle("header__nav_toggle--toggled")
}

let navToggle = document.querySelector(".header__nav_toggle");
navToggle.addEventListener("click", toggleNavOn);

* {
  margin: 0;
  padding: 0;
}

:root {
  --color-white: #fffff0;
  --color-black: #000;
  --color-primary: #5f5e63;
  --color-primary-light: #8c8b90;
  --color-primary-dark: #353439;
  --color-primary-dark-2: #131313;
  --color-secondary: #ca3722;
  --color-secondary-light: #ff6a4c;
  --color-secondary-dark: #920000;
  --cells: 40;
  --cellSize: calc(100vw / var(--cells));
}

.header {
  -ms-grid-column: 1;
  -ms-grid-column-span: 40;
  grid-column: 1 / span 40;
  position: -webkit-sticky;
  position: sticky;
  top: 0;
  z-index: 10;
  margin: 0 auto;
  -webkit-box-shadow: 0 0.9rem 1.8rem rgba(0, 0, 0, 0.25), 0 0.625rem 0.625rem rgba(0, 0, 0, 0.22);
  box-shadow: 0 0.9rem 1.8rem rgba(0, 0, 0, 0.25), 0 0.625rem 0.625rem rgba(0, 0, 0, 0.22);
  padding: 1.1rem 1.4rem;
  width: 100%;
  background: var(--color-primary-dark-2);
}

.header__container {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  z-index: 11;
}

.header__container_logo {
  z-index: 1;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
  -ms-flex-direction: row;
  flex-direction: row;
}

.header__logo_link {
  -webkit-box-flex: 2;
  -ms-flex-positive: 2;
  flex-grow: 2;
}

.header__logo_img {
  margin: 0 auto;
  max-height: 1.3rem;
  width: 2.6rem;
}

.header__nav_toggle {
  display: block;
  height: 24px;
  width: 24px;
}

.header__nav_toggle span {
  display: inline-block;
  height: 100%;
  width: 100%;
}

.header__nav_toggle span::before {
  content: "";
  position: relative;
  display: block;
  top: 6px;
  height: 2px;
  width: 100%;
  background-color: var(--color-white);
  -webkit-transition: all 0.15s ease-in-out;
  transition: all 0.15s ease-in-out;
}

.header__nav_toggle span::after {
  content: "";
  position: relative;
  display: block;
  top: 12px;
  height: 2px;
  width: 100%;
  background-color: var(--color-white);
  -webkit-transition: all 0.15s ease-in-out;
  transition: all 0.15s ease-in-out;
}

.header__nav_toggle--toggled span::before {
  top: 13px;
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
  -webkit-transition: all 0.15s ease-in-out;
  transition: all 0.15s ease-in-out;
}

.header__nav_toggle--toggled span::after {
  -webkit-transform: rotate(-45deg);
  transform: rotate(-45deg);
  -webkit-transition: all 0.15s ease-in-out;
  transition: all 0.15s ease-in-out;
}

.header__nav_link:hover,
.header__logo_link:hover,
.header__logo_img:hover,
.header__nav_toggle:hover {
  opacity: 0.8;
  -webkit-transition: all 0.1s ease;
  transition: all 0.1s ease;
}

.header__nav_link {
  display: none;
  color: var(--color-white);
  font-size: 0.9rem;
  font-weight: 400;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.1rem;
}

.header__nav {
  visibility: hidden;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  margin-bottom: -0.9rem;
  padding-top: 16px;
  text-align: center;
  background-color: var(--color-primary-dark);
}

.header__nav_link {
  display: block;
  border-top: 2px solid;
  -o-border-image: linear-gradient(to right, rgba(0, 0, 0, 0), var(--color-primary-dark), rgba(0, 0, 0, 0)) 1;
  border-image: -webkit-gradient(linear, left top, right top, from(rgba(0, 0, 0, 0)), color-stop(var(--color-primary-dark)), to(rgba(0, 0, 0, 0))) 1;
  border-image: linear-gradient(to right, rgba(0, 0, 0, 0), var(--color-primary-dark), rgba(0, 0, 0, 0)) 1;
  padding: 0.5rem 0;
}

<header class="header">
  <div class="header__container">
    <div class="header__container_logo">
      <a class="header__logo_link" href="#"><img class="header__logo_img" src="img/vtol-logo.svg" alt="Vtol Logo"></a>
      <a class="header__nav_toggle" href="javascript:void(0);">
        <span></span>
      </a>
    </div>

    <nav class="header__nav" id="nav-bar">
      <a class="header__nav_link" href="#video-container">Watch</a>
      <a class="header__nav_link" href="#features">Features</a>
      <a class="header__nav_link" href="#about">About</a>
    </nav>

  </div>
</header>

Answer 1

您可以查看“聚焦”和“模糊”事件。

https://developer.mozilla.org/en-US/docs/Web/API/Element/blur_event