[英]Cannot assign to read only property 'exports' of object '#<Object>'
我想在我的 vue 项目中集成这个库： https : //github.com/ZemezPlugins/rd-navbar
但是我遇到了非常奇怪的错误，当我将它包含在 require 中时，我收到以下错误：无法分配给对象“#”的只读属性“exports”。
所以我想我要把它添加到一个单独的文件中并通过导入添加它，但后来我发现 this.initialize 不是一个函数。
是进口的吗？ 如果是这样，我怎样才能使这个库工作？ 我把它包括在下面。
/**
* @module RD Navbar
* @author Evgeniy Gusarov
* @version 2.2.5
*/
(function() {
var isTouch;
isTouch = "ontouchstart" in window;
(function($, document, window) {
/**
* Creates a RDNavbar.
* @class RDNavbar.
* @public
* @param {HTMLElement} element - The element to create the RDNavbar for.
* @param {Object} [options] - The options
*/
var RDNavbar;
RDNavbar = (function() {
/**
* Default options for RDNavbar.
* @protected
*/
RDNavbar.prototype.Defaults = {
layout: 'rd-navbar-static',
deviceLayout: 'rd-navbar-fixed',
focusOnHover: true,
focusOnHoverTimeout: 800,
linkedElements: ["html"],
domAppend: true,
stickUp: true,
stickUpClone: true,
stickUpOffset: '100%',
anchorNav: true,
anchorNavSpeed: 400,
anchorNavOffset: 0,
anchorNavEasing: 'swing',
autoHeight: true,
responsive: {
0: {
layout: "rd-navbar-fixed",
deviceLayout: "rd-navbar-fixed",
focusOnHover: false,
stickUp: false
},
992: {
layout: "rd-navbar-static",
deviceLayout: "rd-navbar-static",
focusOnHover: true,
stickUp: true
}
},
callbacks: {
onToggleSwitch: false,
onToggleClose: false,
onDomAppend: false,
onDropdownOver: false,
onDropdownOut: false,
onDropdownToggle: false,
onDropdownClose: false,
onStuck: false,
onUnstuck: false,
onAnchorChange: false
}
};
function RDNavbar(element, options) {
/**
* Current options set
* @public
*/
this.options = $.extend(true, {}, this.Defaults, options);
/**
* Plugin element
* @public
*/
this.$element = $(element);
/**
* Plugin element clone
* @public
*/
this.$clone = null;
/**
* Additional references
* @public
*/
this.$win = $(window);
this.$doc = $(document);
this.currentLayout = this.options.layout;
this.loaded = false;
this.focusOnHover = this.options.focusOnHover;
this.focusTimer = false;
this.cloneTimer = false;
this.isStuck = false;
this.initialize();
}
/**
* Initializes the RDNavbar.
* @protected
*/
RDNavbar.prototype.initialize = function() {
var ctx;
ctx = this;
ctx.$element.addClass("rd-navbar").addClass(ctx.options.layout);
if (isTouch) {
ctx.$element.addClass("rd-navbar--is-touch");
}
if (ctx.options.domAppend) {
ctx.createNav(ctx);
}
if (ctx.options.stickUpClone) {
ctx.createClone(ctx);
}
ctx.$element.addClass('rd-navbar-original');
ctx.addAdditionalClassToToggles('.rd-navbar-original', 'toggle-original', 'toggle-original-elements');
ctx.applyHandlers(ctx);
ctx.offset = ctx.$element.offset().top;
ctx.height = ctx.$element.outerHeight();
ctx.loaded = true;
return ctx;
};
/**
* Changes {ctx.$element} layout basing on screen resolution
* @protected
*/
RDNavbar.prototype.resize = function(ctx, e) {
var targetElement, targetLayout;
targetLayout = isTouch ? ctx.getOption('deviceLayout') : ctx.getOption('layout');
targetElement = ctx.$element.add(ctx.$clone);
if (targetLayout !== ctx.currentLayout || !ctx.loaded) {
ctx.switchClass(targetElement, ctx.currentLayout, targetLayout);
if (ctx.options.linkedElements != null) {
$.grep(ctx.options.linkedElements, function(link, index) {
return ctx.switchClass(link, ctx.currentLayout + '-linked', targetLayout + '-linked');
});
}
ctx.currentLayout = targetLayout;
}
ctx.focusOnHover = ctx.getOption('focusOnHover');
return ctx;
};
/**
* Toggles bar stickup on scroll
* @protected
*/
RDNavbar.prototype.stickUp = function(ctx, e) {
var scrollTop, stickUp, stickUpOffset, targetElement, threshold;
stickUp = ctx.getOption("stickUp");
if ($('html').hasClass('ios') || ctx.$element.hasClass('rd-navbar-fixed')) {
stickUp = false;
}
scrollTop = ctx.$doc.scrollTop();
targetElement = ctx.$clone != null ? ctx.$clone : ctx.$element;
stickUpOffset = ctx.getOption('stickUpOffset');
threshold = (typeof stickUpOffset === 'string' ? (stickUpOffset.indexOf('%') > 0 ? parseFloat(stickUpOffset) * ctx.height / 100 : parseFloat(stickUpOffset)) : stickUpOffset);
if (stickUp) {
if ((scrollTop >= threshold && !ctx.isStuck) || (scrollTop < threshold && ctx.isStuck)) {
ctx.$element.add(ctx.$clone).find('[data-rd-navbar-toggle]').each(function() {
$.proxy(ctx.closeToggle, this)(ctx, false);
}).end().find('.rd-navbar-submenu').removeClass('opened').removeClass('focus');
if (scrollTop >= threshold && !ctx.isStuck && !ctx.$element.hasClass('rd-navbar-fixed')) {
if (ctx.options.callbacks.onStuck) {
ctx.options.callbacks.onStuck.call(ctx);
}
setTimeout(function(){
if (e.type === 'resize') {
ctx.switchClass(targetElement, '', 'rd-navbar--is-stuck');
} else {
targetElement.addClass('rd-navbar--is-stuck');
}
ctx.isStuck = true;
}, navigator.platform.match(/(Mac)/i) ? 10 : 0);
} else {
if (e.type === 'resize') {
ctx.switchClass(targetElement, 'rd-navbar--is-stuck', '');
} else {
targetElement.removeClass('rd-navbar--is-stuck').one('transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd', $.proxy(ctx.resizeWrap, ctx, e));
}
ctx.isStuck = false;
if (ctx.options.callbacks.onUnstuck) {
ctx.options.callbacks.onUnstuck.call(ctx);
}
}
}
} else {
ctx.$element.find('.rd-navbar-submenu').removeClass('opened').removeClass('focus');
if (ctx.isStuck) {
ctx.switchClass(targetElement, 'rd-navbar--is-stuck', '');
ctx.isStuck = false;
ctx.resizeWrap(e);
}
}
return ctx;
};
/**
* Resizes an external wrap of navbar
* @protected
*/
RDNavbar.prototype.resizeWrap = function(e) {
var $wrap, ctx;
ctx = this;
if ((ctx.$clone == null) && !ctx.isStuck) {
$wrap = ctx.$element.parent();
if (!ctx.getOption('autoHeight')) {
$wrap.css('height', 'auto');
return;
}
ctx.height = ctx.$element.outerHeight();
if (e.type === 'resize') {
$wrap.addClass('rd-navbar--no-transition').css('height', ctx.height);
$wrap[0].offsetHeight;
return $wrap.removeClass('rd-navbar--no-transition');
} else {
return $wrap.css('height', ctx.height);
}
}
};
/**
* Creates additional DOM for navigation functionality
* @protected
*/
RDNavbar.prototype.createNav = function(ctx) {
ctx.$element.find('.rd-navbar-dropdown, .rd-navbar-megamenu').each(function() {
var $this, rect;
$this = $(this);
rect = this.getBoundingClientRect();
if ($this.hasClass('rd-navbar-megamenu')) {
return $this.parent().addClass('rd-navbar--has-megamenu');
} else {
return $this.parent().addClass('rd-navbar--has-dropdown');
}
}).parents("li").addClass("rd-navbar-submenu");
$('<span class="rd-navbar-submenu-toggle"></span>').insertAfter('.rd-navbar-nav li.rd-navbar-submenu > a');
if (ctx.options.callbacks.onDomAppend) {
ctx.options.callbacks.onDomAppend.call(this);
}
return ctx;
};
/**
* Creates navbar clone to stick up
* @protected
*/
RDNavbar.prototype.createClone = function(ctx) {
ctx.$clone = ctx.$element.clone().insertAfter(ctx.$element).addClass('rd-navbar--is-clone');
ctx.addAdditionalClassToToggles('.rd-navbar--is-clone', 'toggle-cloned', 'toggle-cloned-elements');
return ctx;
};
/**
* Closes all toggles on outside click of each item
* @protected
*/
RDNavbar.prototype.closeToggle = function(ctx, e) {
var $items, $target, additionalToggleElClass, additionalToogleClass, collapse, linkedElements, needClose;
$target = $(e.target);
collapse = false;
linkedElements = this.getAttribute('data-rd-navbar-toggle');
if (ctx.options.stickUpClone && ctx.isStuck) {
additionalToogleClass = '.toggle-cloned';
additionalToggleElClass = '.toggle-cloned-elements';
needClose = !$target.hasClass('toggle-cloned');
} else {
additionalToogleClass = '.toggle-original';
additionalToggleElClass = '.toggle-original-elements';
needClose = !$target.hasClass('toggle-original');
}
if (e.target !== this && !$target.parents(additionalToogleClass + '[data-rd-navbar-toggle]').length && !$target.parents(additionalToggleElClass).length && linkedElements && needClose) {
$items = $(this).parents('body').find(linkedElements).add($(this).parents('.rd-navbar')[0]);
$items.each(function() {
if (!collapse) {
return collapse = (e.target === this || $.contains(this, e.target)) === true;
}
});
if (!collapse) {
$items.add(this).removeClass('active');
if (ctx.options.callbacks.onToggleClose) {
ctx.options.callbacks.onToggleClose.call(this, ctx);
}
}
}
return this;
};
/**
* Switches toggle
* @protected
*/
RDNavbar.prototype.switchToggle = function(ctx, e) {
var additionalToggleElClass, linkedElements, navbarClass;
e.preventDefault();
if ($(this).hasClass('toggle-cloned')) {
navbarClass = '.rd-navbar--is-clone';
additionalToggleElClass = '.toggle-cloned-elements';
} else {
navbarClass = '.rd-navbar-original';
additionalToggleElClass = '.toggle-original-elements';
}
if (linkedElements = this.getAttribute('data-rd-navbar-toggle')) {
$(navbarClass + ' [data-rd-navbar-toggle]').not(this).each(function() {
var deactivateElements;
if (deactivateElements = this.getAttribute('data-rd-navbar-toggle')) {
return $(this).parents('body').find(navbarClass + ' ' + deactivateElements + additionalToggleElClass).add(this).add($.inArray('.rd-navbar', deactivateElements.split(/\s*,\s*/i)) > -1 ? $(this).parents('body')[0] : false).removeClass('active');
}
});
$(this).parents('body').find(navbarClass + ' ' + linkedElements + additionalToggleElClass).add(this).add($.inArray('.rd-navbar', linkedElements.split(/\s*,\s*/i)) > -1 ? $(this).parents('.rd-navbar')[0] : false).toggleClass('active');
}
if (ctx.options.callbacks.onToggleSwitch) {
ctx.options.callbacks.onToggleSwitch.call(this, ctx);
}
return this;
};
/**
* Triggers submenu popup to be shown on mouseover
* @protected
*/
RDNavbar.prototype.dropdownOver = function(ctx, timer) {
var $this;
if (ctx.focusOnHover) {
$this = $(this);
clearTimeout(timer);
if (ctx.options.callbacks.onDropdownOver) {
if (!ctx.options.callbacks.onDropdownOver.call(this, ctx)){
return this;
}
}
$this.addClass('focus').siblings().removeClass('opened').each(ctx.dropdownUnfocus);
}
return this;
};
/**
* Triggers submenu popup to be shown on mouseover
* @protected
*/
RDNavbar.prototype.dropdownTouch = function(ctx, timer) {
var $this, hasFocus;
$this = $(this);
clearTimeout(timer);
if (ctx.focusOnHover) {
hasFocus = false;
if ($this.hasClass('focus')) {
hasFocus = true;
}
if (!hasFocus) {
$this.addClass('focus').siblings().removeClass('opened').each(ctx.dropdownUnfocus);
return false;
}
if (ctx.options.callbacks.onDropdownOver) {
ctx.options.callbacks.onDropdownOver.call(this, ctx);
}
}
return this;
};
/**
* Triggers submenu popop to be hidden on mouseout
* @protected
*/
RDNavbar.prototype.dropdownOut = function(ctx, timer) {
var $this;
if (ctx.focusOnHover) {
$this = $(this);
$this.one('mouseenter.navbar', function() {
return clearTimeout(timer);
});
if (ctx.options.callbacks.onDropdownOut) {
ctx.options.callbacks.onDropdownOut.call(this, ctx);
}
clearTimeout(timer);
timer = setTimeout($.proxy(ctx.dropdownUnfocus, this, ctx), ctx.options.focusOnHoverTimeout);
}
return this;
};
/**
* Removes a focus from submenu
* @protected
*/
RDNavbar.prototype.dropdownUnfocus = function(ctx) {
var $this;
$this = $(this);
$this.find('li.focus').add(this).removeClass('focus');
return this;
};
/**
* Closes submenu
* @protected
*/
RDNavbar.prototype.dropdownClose = function(ctx, e) {
var $this;
if (e.target !== this && !$(e.target).parents('.rd-navbar-submenu').length) {
$this = $(this);
$this.find('li.focus').add(this).removeClass('focus').removeClass('opened');
if (ctx.options.callbacks.onDropdownClose) {
ctx.options.callbacks.onDropdownClose.call(this, ctx);
}
}
return this;
};
/**
* Toggles submenu popup to be shown on trigger click
* @protected
*/
RDNavbar.prototype.dropdownToggle = function(ctx) {
$(this).toggleClass('opened').siblings().removeClass('opened');
if (ctx.options.callbacks.onDropdownToggle) {
ctx.options.callbacks.onDropdownToggle.call(this, ctx);
}
return this;
};
/**
* Scrolls the page to triggered anchor
* @protected
*/
RDNavbar.prototype.goToAnchor = function(ctx, e) {
var $anchor, hash;
hash = this.hash;
$anchor = $(hash);
if (!ctx.getOption('anchorNav')){
return false;
}
if ($anchor.length) {
e.preventDefault();
$('html, body').stop().animate({
'scrollTop': $anchor.offset().top + ctx.getOption('anchorNavOffset') + 1
}, ctx.getOption('anchorNavSpeed'), ctx.getOption('anchorNavEasing'), function() {
return ctx.changeAnchor(hash);
});
}
return this;
};
/**
* Highlight an active anchor
* @protected
*/
RDNavbar.prototype.activateAnchor = function(e) {
var $anchor, $item, $link, ctx, docHeight, hash, i, link, links, navOffset, scrollTop, winHeight;
ctx = this;
scrollTop = ctx.$doc.scrollTop();
winHeight = ctx.$win.height();
docHeight = ctx.$doc.height();
navOffset = ctx.getOption('anchorNavOffset');
if (!ctx.options.anchorNav){
return false;
}
if (scrollTop + winHeight > docHeight - 50) {
$anchor = $('[data-type="anchor"]').last();
if ($anchor.length) {
if ($anchor.offset().top >= scrollTop) {
hash = '#' + $anchor.attr("id");
$item = $('.rd-navbar-nav a[href^="' + hash + '"]').parent();
if (!$item.hasClass('active')) {
$item.addClass('active').siblings().removeClass('active');
if (ctx.options.callbacks.onAnchorChange) {
ctx.options.callbacks.onAnchorChange.call($anchor[0], ctx);
}
}
}
}
return $anchor;
} else {
links = $('.rd-navbar-nav a[href^="#"]').get();
for (i in links) {
link = links[i];
$link = $(link);
hash = $link.attr('href');
$anchor = $(hash);
if ($anchor.length) {
if ($anchor.offset().top + navOffset <= scrollTop && $anchor.offset().top + $anchor.outerHeight() > scrollTop) {
$link.parent().addClass('active').siblings().removeClass('active');
if (ctx.options.callbacks.onAnchorChange) {
ctx.options.callbacks.onAnchorChange.call($anchor[0], ctx);
}
}
}
}
}
return null;
};
/**
* Returns current anchor
* @protected
*/
RDNavbar.prototype.getAnchor = function() {
if (history) {
if (history.state) {
return history.state.id;
}
}
return null;
};
/**
* Changes current page anchor
* @protected
*/
RDNavbar.prototype.changeAnchor = function(hash) {
if (history) {
if (history.state) {
if (history.state.id !== hash) {
history.replaceState({
'anchorId': hash
}, null, hash);
} else {
history.pushState({
'anchorId': hash
}, null, hash);
}
} else {
history.pushState({
'anchorId': hash
}, null, hash);
}
}
return this;
};
/**
* Applies all JS event handlers
* @protected
*/
RDNavbar.prototype.applyHandlers = function(ctx) {
if (ctx.options.responsive != null) {
ctx.$win.on('resize.navbar', $.proxy(ctx.resize, ctx.$win[0], ctx)).on('resize.navbar', $.proxy(ctx.resizeWrap, ctx)).on('resize.navbar', $.proxy(ctx.stickUp, (ctx.$clone != null ? ctx.$clone : ctx.$element), ctx)).on('orientationchange.navbar', $.proxy(ctx.resize, ctx.$win[0], ctx)).trigger('resize.navbar');
}
ctx.$doc.on('scroll.navbar', $.proxy(ctx.stickUp, (ctx.$clone != null ? ctx.$clone : ctx.$element), ctx)).on('scroll.navbar', $.proxy(ctx.activateAnchor, ctx));
ctx.$element.add(ctx.$clone).find('[data-rd-navbar-toggle]').each(function() {
var $this;
$this = $(this);
$this.on('click', $.proxy(ctx.switchToggle, this, ctx));
return $this.parents('body').on('click', $.proxy(ctx.closeToggle, this, ctx));
});
ctx.$element.add(ctx.$clone).find('.rd-navbar-submenu').each(function() {
var $this, timer;
$this = $(this);
timer = $this.parents(".rd-navbar--is-clone").length ? ctx.cloneTimer : ctx.focusTimer;
$this.on('mouseleave.navbar', $.proxy(ctx.dropdownOut, this, ctx, timer));
$this.find('> a').on('mouseenter.navbar', $.proxy(ctx.dropdownOver, this, ctx, timer));
$this.find('> a').on('touchstart.navbar', $.proxy(ctx.dropdownTouch, this, ctx, timer));
$this.find('> .rd-navbar-submenu-toggle').on('click', $.proxy(ctx.dropdownToggle, this, ctx));
return $this.parents('body').on('click', $.proxy(ctx.dropdownClose, this, ctx));
});
ctx.$element.add(ctx.$clone).find('.rd-navbar-nav a[href^="#"]').each(function() {
return $(this).on('click', $.proxy(ctx.goToAnchor, this, ctx));
});
ctx.$element.find('.rd-navbar-dropdown, .rd-navbar-megamenu').each(function() {
var $this, rect;
$this = $(this);
rect = this.getBoundingClientRect();
if ((rect.left + $this.outerWidth()) >= window.innerWidth - 10) {
this.className += ' rd-navbar-open-left';
} else if ((rect.left - $this.outerWidth()) <= 10) {
this.className += ' rd-navbar-open-right';
}
});
return ctx;
};
/**
* Switches classes of elements without transition
* @protected
*/
RDNavbar.prototype.switchClass = function(element, before, after) {
var obj;
obj = element instanceof jQuery ? element : $(element);
obj.addClass('rd-navbar--no-transition').removeClass(before).addClass(after);
obj[0].offsetHeight;
return obj.removeClass('rd-navbar--no-transition');
};
/**
* Gets specific option of plugin
* @protected
*/
RDNavbar.prototype.getOption = function(key) {
var point, targetPoint;
for (point in this.options.responsive) {
if (point <= window.innerWidth) {
targetPoint = point;
}
}
if ((this.options.responsive != null) && (this.options.responsive[targetPoint][key] != null)) {
return this.options.responsive[targetPoint][key];
} else {
return this.options[key];
}
};
/**
* Add additional class to navbar toggles to identify it when navbar is cloned
* @protected
*/
RDNavbar.prototype.addAdditionalClassToToggles = function(navbarClass, toggleAdditionalClass, toggleElAdditionalClass) {
return $(navbarClass).find('[data-rd-navbar-toggle]').each(function() {
var toggleElement;
$(this).addClass(toggleAdditionalClass);
toggleElement = this.getAttribute('data-rd-navbar-toggle');
return $(this).parents('body').find(navbarClass).find(toggleElement).addClass(toggleElAdditionalClass);
});
};
return RDNavbar;
})();
/**
* The jQuery Plugin for the RD Navbar
* @public
*/
$.fn.extend({
RDNavbar: function(options) {
var $this;
$this = $(this);
if (!$this.data('RDNavbar')) {
return $this.data('RDNavbar', new RDNavbar(this, options));
}
}
/**
* RD Navbar window export
* @public
*/
});
return window.RDNavbar = RDNavbar;
})(window.jQuery, document, window);
/**
* The Plugin AMD export
* @public
*/
console.log(typeof module !== "undefined" && module !== null)
if (typeof module !== "undefined" && module !== null) {
module.exports = window.RDNavbar;
} else if (typeof define === 'function' && define.amd) {
define(["jquery"], function() {
'use strict';
return window.RDNavbar;
});
}
}).call(this);
对于仍然遇到此错误的任何人，请尝试在导入模块的 .Vue 文件中使用 export default 而不是 module.exports。 我遇到了同样的错误，这修复了它。 在 Node.js 和 ES6和这个https://github.com/webpack/webpack/issues/4039#issuecomment-273804003 中看到这个module.exports vs. export default
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