如何在显示菜单之前使背景链接无法点击？

时间：2017-12-28 19:56:29

标签： javascript html css

尝试将此菜单概念融入朋友艺术展览网站，但我遇到的问题是菜单链接是可点击的，无论它们是否可见。我一直在使用pointer-events:none;，但无法解决问题。我可以使链接完全不可点击，即使当菜单显示但是失败了目的。任何帮助将不胜感激。

A link to working demo and code can be found here

＆＃13;
＆＃13; 
console.clear();

var app = function () {
	var body = void 0;
	var menu = void 0;
	var menuItems = void 0;

	var init = function init() {
		body = document.querySelector('body');
		menu = document.querySelector('.menu-icon');
		menuItems = document.querySelectorAll('.nav__list-item');

		applyListeners();
	};

	var applyListeners = function applyListeners() {
		menu.addEventListener('click', function () {
			return toggleClass(body, 'nav-active');
		});
	};

	var toggleClass = function toggleClass(element, stringClass) {
		if (element.classList.contains(stringClass)) element.classList.remove(stringClass);else element.classList.add(stringClass);
	};

	init();
}();
＆＃13; 
body {
  background-color: #1e2023;
  font-family: "Fira Sans", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.site-content {
  max-width: 1100px;
  height: 100vh;
  margin-left: auto;
  margin-right: auto;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
}
.site-content__headline {
  font-weight: 200;
  color: #ffffff;
  font-size: calc(2vw + 10px);
}

.menu-icon {
  height: 30px;
  width: 30px;
  position: fixed;
  z-index: 2;
  left: 50px;
  top: 30px;
  cursor: pointer;
}
.menu-icon__line {
  height: 2px;
  width: 30px;
  display: block;
  background-color: #ffffff;
  margin-bottom: 4px;
  -webkit-transition: background-color .5s ease, -webkit-transform .2s ease;
  transition: background-color .5s ease, -webkit-transform .2s ease;
  transition: transform .2s ease, background-color .5s ease;
  transition: transform .2s ease, background-color .5s ease, -webkit-transform .2s ease;
}
.menu-icon__line-left {
  width: 15px;
}
.menu-icon__line-right {
  width: 15px;
  float: right;
}

.nav {
  position: fixed;
  z-index: 1;
}
.nav:before, .nav:after {
  content: "";
  position: fixed;
  width: 100vw;
  height: 100vh;
  background: rgba(234, 234, 234, 0.2);
  z-index: -1;
  -webkit-transition: -webkit-transform cubic-bezier(0.77, 0, 0.175, 1) 0.8s;
  transition: -webkit-transform cubic-bezier(0.77, 0, 0.175, 1) 0.8s;
  transition: transform cubic-bezier(0.77, 0, 0.175, 1) 0.8s;
  transition: transform cubic-bezier(0.77, 0, 0.175, 1) 0.8s, -webkit-transform cubic-bezier(0.77, 0, 0.175, 1) 0.8s;
  -webkit-transform: translateX(0%) translateY(-100%);
          transform: translateX(0%) translateY(-100%);
}
.nav:after {
  background: white;
  -webkit-transition-delay: 0s;
          transition-delay: 0s;
}
.nav:before {
  -webkit-transition-delay: .1s;
          transition-delay: .1s;
}
.nav__content {
  position: fixed;
  top: 50%;
  -webkit-transform: translate(0%, -50%);
          transform: translate(0%, -50%);
  width: 100%;
  text-align: center;
  font-size: calc(2vw + 10px);
  font-weight: 200;
  cursor: pointer;
}
.nav__list-item {
  position: relative;
  display: inline-block;
  -webkit-transition-delay: 0.8s;
          transition-delay: 0.8s;
  opacity: 0;
  -webkit-transform: translate(0%, 100%);
          transform: translate(0%, 100%);
  -webkit-transition: opacity .2s ease, -webkit-transform .3s ease;
  transition: opacity .2s ease, -webkit-transform .3s ease;
  transition: opacity .2s ease, transform .3s ease;
  transition: opacity .2s ease, transform .3s ease, -webkit-transform .3s ease;
  margin-right: 25px;
}
.nav__list-item:before {
  content: "";
  position: absolute;
  background: #000000;
  width: 20px;
  height: 1px;
  top: 100%;
  -webkit-transform: translate(0%, 0%);
          transform: translate(0%, 0%);
  -webkit-transition: all .3s ease;
  transition: all .3s ease;
  z-index: -1;
}
.nav__list-item:hover:before {
  width: 100%;
}

body.nav-active .menu-icon__line {
  background-color: #000;
  -webkit-transform: translateX(0px) rotate(-45deg);
          transform: translateX(0px) rotate(-45deg);
}
body.nav-active .menu-icon__line-left {
  -webkit-transform: translateX(1px) rotate(45deg);
          transform: translateX(1px) rotate(45deg);
}
body.nav-active .menu-icon__line-right {
  -webkit-transform: translateX(-2px) rotate(45deg);
          transform: translateX(-2px) rotate(45deg);
}
body.nav-active .nav {
  visibility: visible;
}
body.nav-active .nav:before, body.nav-active .nav:after {
  -webkit-transform: translateX(0%) translateY(0%);
          transform: translateX(0%) translateY(0%);
}
body.nav-active .nav:after {
  -webkit-transition-delay: .1s;
          transition-delay: .1s;
}
body.nav-active .nav:before {
  -webkit-transition-delay: 0s;
          transition-delay: 0s;
}
body.nav-active .nav__list-item {
  opacity: 1;
  -webkit-transform: translateX(0%);
          transform: translateX(0%);
  -webkit-transition: opacity .3s ease, color .3s ease, -webkit-transform .3s ease;
  transition: opacity .3s ease, color .3s ease, -webkit-transform .3s ease;
  transition: opacity .3s ease, transform .3s ease, color .3s ease;
  transition: opacity .3s ease, transform .3s ease, color .3s ease, -webkit-transform .3s ease;
}
body.nav-active .nav__list-item:nth-child(0) {
  -webkit-transition-delay: 0.5s;
          transition-delay: 0.5s;
}
body.nav-active .nav__list-item:nth-child(1) {
  -webkit-transition-delay: 0.6s;
          transition-delay: 0.6s;
}
body.nav-active .nav__list-item:nth-child(2) {
  -webkit-transition-delay: 0.7s;
          transition-delay: 0.7s;
}
body.nav-active .nav__list-item:nth-child(3) {
  -webkit-transition-delay: 0.8s;
          transition-delay: 0.8s;
}
body.nav-active .nav__list-item:nth-child(4) {
  -webkit-transition-delay: 0.9s;
          transition-delay: 0.9s;
}
＆＃13; 
<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <title>Projects</title>

    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
    <link rel="stylesheet" href="menu.css">


    <script src="menu.js"></script>



</head>


<body>

<div class="menu-icon">
	<span class="menu-icon__line menu-icon__line-left"></span>
	<span class="menu-icon__line"></span>
	<span class="menu-icon__line menu-icon__line-right"></span>
</div>

<div class="nav">
	<div class="nav__content">
		<ul class="nav__list">
            <a href="https://stackoverflow.com/questions/1401658/html-overlay-which-allows-clicks-to-fall-through-to-elements-behind-it">
            <li class="nav__list-item">Home</li></a>
            <a href="https://bootsnipp.com/search?q=navigation+">
            <li class="nav__list-item">About</li></a>
			<li class="nav__list-item">Projects</li>
			<li class="nav__list-item">Contact</li>
		</ul>
	</div>
</div>

<div class="site-content">
	<h1 class="site-content__headline">Another menu concept</h1>
</div>
</body>

</html>
＆＃13;
＆＃13;
＆＃13;

2 个答案:

答案 0 :(得分：0)

您可以通过在pointer-events: none上切换.nav__content来实现您的目标。我不确定你对parent selector的体验如何，但在这种情况下它很有用。

在SCSS

中 
&__content{
    …
    pointer-events: none;

    .nav-active & { // <-- parent selector
        pointer-events: auto;
    }
}

答案 1 :(得分：0)

另一种方法是切换菜单项的显示。我编辑了你的JS代码。通过使用display none，它有效地使列表项元素不可点击。然后在项目处于活动状态时更改显示。

const applyListeners = () => {
    menu.addEventListener('click', () => toggleClass(body, 'nav-active'));
    for(let i=0; i<menuItems.length; i++) {
        menuItems[i].style.display="";
    }
}

const init = () => {
    body = document.querySelector('body');
    menu = document.querySelector('.menu-icon');
    menuItems = document.querySelectorAll('.nav__list-item');

    for(let i=0; i<menuItems.length; i++) {
        menuItems[i].style.display="none";
    }

    applyListeners();
}
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