javascript - 如何在点击时将 z-index 较高的 div 调用到顶部？

Question

目前，我的网站右侧有 2 个抽屉/菜单，1 个用于购物车，1 个用于产品快速查看选项。

我使用 Shopify Timber Framework 构建了我的主题并且抽屉当前滑开(#PageContainer 在单击时向左移动以显示抽屉)。

我需要更改 JS，以便单击时 z-index 发生变化，以便调用的正确抽屉位于堆栈中的最高位置。

我不太擅长 JS，所以不确定这是否是一个简单的任务？

任何帮助将不胜感激!

我的代码如下:

更新:链接至 Dev Store

JS:

timber.Drawers = (function () {
var Drawer = function (id, position, options) {
var defaults = {
  close: '.js-drawer-close',
  open: '.js-drawer-open-' + position,
  openClass: 'js-drawer-open',
  dirOpenClass: 'js-drawer-open-' + position
};

this.$nodes = {
  parent: $('body, html'),
  page: $('#PageContainer'),
  moved: $('.is-moved-by-drawer')
};

this.config = $.extend(defaults, options);
this.position = position;

this.$drawer = $('#' + id);

if (!this.$drawer.length) {
  return false;
}

this.drawerIsOpen = false;
this.init();
};

Drawer.prototype.init = function () {
$(this.config.open).on('click', $.proxy(this.open, this));
this.$drawer.find(this.config.close).on('click', $.proxy(this.close, this));
};

Drawer.prototype.open = function (evt) {
// Keep track if drawer was opened from a click, or called by another function
var externalCall = false;

// Prevent following href if link is clicked
if (evt) {
  evt.preventDefault();
} else {
  externalCall = true;
}

// Without this, the drawer opens, the click event bubbles up to $nodes.page
// which closes the drawer.
if (evt && evt.stopPropagation) {
  evt.stopPropagation();
  // save the source of the click, we'll focus to this on close
  this.$activeSource = $(evt.currentTarget);
}

if (this.drawerIsOpen && !externalCall) {
  return this.close();
}

// Add is-transitioning class to moved elements on open so drawer can have
// transition for close animation
this.$nodes.moved.addClass('is-transitioning');
this.$drawer.prepareTransition();

this.$nodes.parent.addClass(this.config.openClass + ' ' + this.config.dirOpenClass);
this.drawerIsOpen = true;

// Run function when draw opens if set
if (this.config.onDrawerOpen && typeof(this.config.onDrawerOpen) == 'function') {
  if (!externalCall) {
    this.config.onDrawerOpen();
  }
}

if (this.$activeSource && this.$activeSource.attr('aria-expanded')) {
  this.$activeSource.attr('aria-expanded', 'true');
}

// Lock scrolling on mobile
this.$nodes.page.on('touchmove.drawer', function () {
  return false;
});

this.$nodes.page.on('click.drawer', $.proxy(function () {
  this.close();
  return false;
}, this));
};

Drawer.prototype.close = function () {
if (!this.drawerIsOpen) { // don't close a closed drawer
  return;
}

// deselect any focused form elements
$(document.activeElement).trigger('blur');

// Ensure closing transition is applied to moved elements, like the nav
this.$nodes.moved.prepareTransition({ disableExisting: true });
this.$drawer.prepareTransition({ disableExisting: true });

this.$nodes.parent.removeClass(this.config.dirOpenClass + ' ' + this.config.openClass);

this.drawerIsOpen = false;

this.$nodes.page.off('.drawer');
};
return Drawer;
})();

CSS/SASS:

.js-drawer-open {
  overflow: hidden;
}

.drawer {
  position: fixed;
  display: block;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  top: 0;
  bottom: 0;
  padding: 0 ($gutter / 2) ($gutter / 2);
  max-width: 95%;
  z-index: $zindexDrawer;
  color: $colorDrawerText;
  background-color: $colorDrawers;
  @include transition($drawerTransition);

  a {
    color: $colorDrawerText;

    &:hover,
    &:focus {
    opacity: 0.7;
    }
  }

  input,
  textarea {
  border-color: $colorDrawerBorder;
  }
}

.drawer-inner {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 15px 15px 0;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}

.drawer--has-fixed-footer .drawer__inner {
  overflow: hidden;
}

.drawer--left {
  width: $drawerNavWidth;
  left: 0;
  border-right: 1px solid $colorDrawerBorder;

  .js-drawer-open-left & {
    display: block;

.lt-ie9 & {
  left: 0;
  }
 }
}

.drawer--right {
  width: $drawerCartWidth;
  right: 0;
  border-left: 1px solid $colorDrawerBorder;

  .js-drawer-open-right & {
    display: block;

    .lt-ie9 & {
      right: 0;
    }
  }
}

.drawer--right-two {
  width: $drawerQuickShopWidth;
  right: -$drawerQuickShopWidth;
  border-left: 1px solid $colorDrawerBorder;

  .js-drawer-open-right-two & {
    display: block;
    @include transform(translateX(-$drawerQuickShopWidth));

    .lt-ie9 & {
      right: 0;
    }
  }
}

#PageContainer {
  position: relative;
  background-color: #fff;
  overflow: hidden;
  z-index: 10000;
}

.is-moved-by-drawer {
  @include transition($drawerTransition);

  .js-drawer-open-left & {
    @include transform(translateX($drawerNavWidth));
  }

  .js-drawer-open-right & {
    @include transform(translateX(-$drawerCartWidth));
  }

  .js-drawer-open-right-two & {
    @include transform(translateX(-$drawerQuickShopWidth));
  }
}

Answer 1

为您的两个抽屉指定一个公共(public)类，然后查询已单击其中一个抽屉的文档。 设置两个抽屉的 z-index，然后将单击的抽屉的 z-index 设置为更高的值!

window.onload = function() {

    [].forEach.call(document.querySelectorAll('.drawers'), function(el) { 
        el.addEventListener('click', drawerOpened); 
    });

        function drawerOpened()
        {
            $('.drawers').css('z-index', '50');
            $(this).css('z-index', '60');
        }
    )};