Question

当我切换打开我的Slide-Left菜单并选择一个锚标记链接时，它会导航到同一页面上的锚定部分，但菜单仍保持打开状态。

我想要一个简单的javascript函数，每当我点击achor链接并导航到欲望部分时关闭切换菜单

我已经尝试了我在堆栈溢出时发现的所有其他解决方案，包括：

$（＆＃39; #menu li＆＃39;）。on（＆＃39; click＆＃39;，function（）{ $（＆＃34;＃菜单＆＃34）隐藏（）; $（＆＃34;＃菜单图标＆＃34）。removeClass（＆＃34;有源＆＃34）; }）;

但似乎没有任何工作，我仍然是Javascript的新手，所以任何帮助或推动正确的方向将非常感激。

使用Javascript：

(function(window) {

  'use strict';

  /**
   * Extend Object helper function.
   */
  function extend(a, b) {
    for(var key in b) { 
      if(b.hasOwnProperty(key)) {
        a[key] = b[key];
      }
    }
    return a;
  }

  /**
   * Each helper function.
   */
  function each(collection, callback) {
    for (var i = 0; i < collection.length; i++) {
      var item = collection[i];
      callback(item);
    }
  }

  /**
   * Menu Constructor.
   */
  function Menu(options) {
    this.options = extend({}, this.options);
    extend(this.options, options);
    this._init();
  }

  /**
   * Menu Options.
   */
  Menu.prototype.options = {
    wrapper: '#o-wrapper',          // The content wrapper
    type: 'slide-left',             // The menu type
    menuOpenerClass: '.c-button',   // The menu opener class names (i.e. the buttons)
    maskId: '#c-mask'               // The ID of the mask
  };

  /**
   * Initialise Menu.
   */
  Menu.prototype._init = function() {
    this.body = document.body;
    this.wrapper = document.querySelector(this.options.wrapper);
    this.mask = document.querySelector(this.options.maskId);
    this.menu = document.querySelector('#c-menu--' + this.options.type);
    this.closeBtn = this.menu.querySelector('.c-menu__close');
    this.menuOpeners = document.querySelectorAll(this.options.menuOpenerClass);
    this._initEvents();
  };

  /**
   * Initialise Menu Events.
   */
  Menu.prototype._initEvents = function() {
    // Event for clicks on the close button inside the menu.
    this.closeBtn.addEventListener('click', function(e) {
      e.preventDefault();
      this.close();
    }.bind(this));

    // Event for clicks on the mask.
    this.mask.addEventListener('click', function(e) {
      e.preventDefault();
      this.close();
    }.bind(this));
  };

  /**
   * Open Menu.
   */
  Menu.prototype.open = function() {
    this.body.classList.add('has-active-menu');
    this.wrapper.classList.add('has-' + this.options.type);
    this.menu.classList.add('is-active');
    this.mask.classList.add('is-active');
    this.disableMenuOpeners();
  };

  /**
   * Close Menu.
   */
  Menu.prototype.close = function() {
    this.body.classList.remove('has-active-menu');
    this.wrapper.classList.remove('has-' + this.options.type);
    this.menu.classList.remove('is-active');
    this.mask.classList.remove('is-active');
    this.enableMenuOpeners();
  };

  /**
   * Disable Menu Openers.
   */
  Menu.prototype.disableMenuOpeners = function() {
    each(this.menuOpeners, function(item) {
      item.disabled = true;
    });
  };

  /**
   * Enable Menu Openers.
   */
  Menu.prototype.enableMenuOpeners = function() {
    each(this.menuOpeners, function(item) {
      item.disabled = false;
    });
  };

  /**
   * Add to global namespace.
   */
  window.Menu = Menu;

})(window);


var slideLeft = new Menu({
  wrapper: '#o-wrapper',
  type: 'slide-left',
  menuOpenerClass: '.c-button',
  maskId: '#c-mask'
});

var slideLeftBtn = document.querySelector('#c-button--slide-left');

slideLeftBtn.addEventListener('click', function(e) {
  e.preventDefault;
  slideLeft.open();
});

HTML：

<!-- Start of Slidesmenu -->
<div class="slidesmenu">
    <div id="o-wrapper" class="o-wrapper">
        <div class="c-buttons">
            <button id="c-button--slide-left" class="c-button"></button>
        </div>
        <!-- other content in here -->
    </div>
    <!-- /o-wrapper -->
    <!-- menus here -->
    <div id="c-mask" class="c-mask"></div>
    <!-- /c-mask -->
    <nav id="c-menu--slide-left" class="c-menu c-menu--slide-left">
        <button class="c-menu__close"></button>
        <ul class="c-menu__items">
            <li class="c-menu__item"><a href="#home" class="c-menu__link">Home</a></li>
            <li class="c-menu__item"><a href="#about" class="c-menu__link">about</a></li>
            <li class="c-menu__item"><a href="#contact" class="c-menu__link">contact</a></li>
            <li class="c-menu__item"><a href="#howitworks" class="c-menu__link">howitworks</a></li>
            <li class="c-menu__item"><a href="#tools" class="c-menu__link">Tools</a></li>
            <li class="c-menu__item"><a href="#help" class="c-menu__link">Help</a></li>
            <li class="c-menu__item"><a href="#customers" class="c-menu__link">Customers</a></li>
            <li class="c-menu__item"><a href="#business" class="c-menu__link">business</a></li>
            <li class="c-menu__item"><a href="#location" class="c-menu__link">location</a></li>
        </ul>
    </nav>
    <!-- /c-menu slide-left -->
</div>
<!-- End of Slidesmenu -->
<div id="about"><p>About</p></div>
<div id="contact"><p>Contact</p></div>
<div id="howitworks"><p>How it Works</p></div>
<div id="tools"><p>Tools</p></div>
<div id="help"><p>Help</p></div>
<div id="customers"><p>Customers</p></div>
<div id="business"><p>Business</p></div>
<div id="location"><p>Location</p></div>

CSS：

.c-menu {
  position: fixed; 
  z-index: 200;
  background-color: #333;
  transition: transform 0.3s;
}

.c-menu__items {
  list-style: none;
  margin: 0;
  padding: 0; margin-top:90px;
}



.c-menu__items li {
  font-size:20px; margin-top:20px;
}

/**
 * Close button resets.
 */
.c-menu__close {
  color: #fff; 
  background-color:#333;
  font-size: 14px;
  border: none; 
  box-shadow: none;
  border-radius: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  cursor: pointer;
}

/**
 * Close button resets.
 */
.c-menu__close:focus {
  outline: none;
}

/**
 * Body states.
 *
 * When a menu is active, we want to hide the overflows on the body to prevent
 * awkward document scrolling.
 */
body.has-active-menu {
  overflow: hidden;
}

 .c-button {

    background-color: blue; 
    background-repeat: no-repeat;  
    background-position: 0px 0px;  
    border: none; margin-top:13px; margin-left:5px;          
    cursor: pointer; z-index:1;       
    height: 25px;          
    padding-left: 25px;     
    vertical-align: middle;      
 }


 .c-menu__close { 
    background-color: white; 
    background-repeat: no-repeat;  
    background-position: 0px 0px;  
    border: none; margin-top:10px; margin-right:2px;          
    cursor: pointer;        
    height: 25px;          
    padding-left: 25px;     
    vertical-align: middle;      
 }



.c-mask {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  overflow: hidden;
  width: 0;
  height: 0;
  background-color: #000;
  opacity: 0;
  transition: opacity 0.3s, width 0s 0.3s, height 0s 0.3s;
}

.c-mask.is-active {
  width: 100%;
  height: 100%;
  opacity: 0.7;
  transition: opacity 0.3s;
}

.c-menu--slide-left,
.c-menu--slide-right,
.c-menu--push-left,
.c-menu--push-right {
  width: 100%;
  height: 100%;
  overflow-y: auto;
}

@media all and (min-width: 320px) {
  .c-menu--slide-left,
  .c-menu--slide-right,
  .c-menu--push-left,
  .c-menu--push-right {
    width: 300px;
  }
}

.c-menu--slide-left .c-menu__item,
.c-menu--slide-right .c-menu__item,
.c-menu--push-left .c-menu__item,
.c-menu--push-right .c-menu__item {
  display: block;
  text-align: left;

}

.c-menu--slide-left .c-menu__item:first-child,
.c-menu--slide-right .c-menu__item:first-child,
.c-menu--push-left .c-menu__item:first-child,
.c-menu--push-right .c-menu__item:first-child {
  border-top: none;
}

.c-menu--slide-left .c-menu__item:last-child,
.c-menu--slide-right .c-menu__item:last-child,
.c-menu--push-left .c-menu__item:last-child,
.c-menu--push-right .c-menu__item:last-child {
  border-bottom: none;
}

.c-menu--slide-left .c-menu__link,
.c-menu--slide-right .c-menu__link,
.c-menu--push-left .c-menu__link,
.c-menu--push-right .c-menu__link {
  display: block; text-decoration:none; margin-top:15px;
  padding: 4px 24px; 
  color: #fff;
}

.c-menu__link:hover {color:#c8d100;}

.c-menu--slide-left .c-menu__close,
.c-menu--slide-right .c-menu__close,
.c-menu--push-left .c-menu__close,
.c-menu--push-right .c-menu__close {
  display: block;
  padding: 10px 10px; clear:both;
  width: 30px;float:right;
}

.c-menu--slide-left,
.c-menu--push-left {
  top: 0;
  left: 0;
  transform: translateX(-100%);
}

@media all and (min-width: 320px) {
  .c-menu--slide-left,
  .c-menu--push-left {
    transform: translateX(-300px);
  }
}

.c-menu--slide-left.is-active,
.c-menu--push-left.is-active {
  transform: translateX(0);
}

.c-menu--slide-right,
.c-menu--push-right {
  top: 0;
  right: 0;
  transform: translateX(100%);
}

@media all and (min-width: 320px) {
  .c-menu--slide-right,
  .c-menu--push-right {
    transform: translateX(300px);
  }
}

.c-menu--slide-right.is-active,
.c-menu--push-right.is-active {
  transform: translateX(0);
}

.o-wrapper.has-push-left {
  transform: translateX(100%);
}

@media all and (min-width: 320px) {
  .o-wrapper.has-push-left {
    transform: translateX(300px);
  }
}

.o-wrapper.has-push-right {
  transform: translateX(-100%);
}

@media all and (min-width: 320px) {
  .o-wrapper.has-push-right {
    transform: translateX(-300px);
  }
}




#about { background:blue; height:100vh; width:100%; color:white; font-size:100px;}

#contact { background:yellow; height:100vh; width:100%; color:white; font-size:100px;}

#howitworks { background:green; height:100vh; width:100%; color:white; font-size:100px;}

#tools { background:red; height:100vh; width:100%; color:white; font-size:100px;}

#about { background:black; height:100vh; width:100%; color:white; font-size:100px;}

#help { background:green; height:100vh; width:100%; color:white; font-size:100px;}

#customers { background:purple; height:100vh; width:100%; color:white; font-size:100px;}

#business { background:orange; height:100vh; width:100%; color:white; font-size:100px;}

#location { background:brown; height:100vh; width:100%; color:white; font-size:100px;}

Answer 1

我将此代码添加到JavaScript的底部：

// Find all menu links
var navLinks = document.querySelectorAll('.c-menu__link');
// For each menu link
var index = 0, length = navLinks.length;
for ( ; index < length; index++) {
    // Attach click event, on click call close function
    navLinks[index].addEventListener('click',
        function () {
            slideLeft.close();
        }
    );
}

小提琴：https://jsfiddle.net/trsjL9th/3/

基本上按类查找菜单中的所有链接，并附加一个调用菜单关闭功能的点击事件。

Answer 2

为链接添加ID：

    <li class="c-menu__item"><a href="#about" id="about-link" class="c-menu__link">about</a></li>

JavaScript添加一个onclick监听器：

document.getElementById('about-link').addEventListener('click', function(e) {
  e.preventDefault;
  slideLeft.close();
});

根据需要重复其他ID。我发现这是最容易阅读的代码，当有人在1 - 2年后审查代码时，但YMMV。

在同一页面中导航锚标签时关闭向左滑动菜单？

2 个答案: