.addEventListener 不是一个函数吗？
2015-08-17
9386
有人在 Codepen 中帮助我执行了此脚本，它运行良好，直到我尝试将其实现到我的 Wordpress 网站中。
两组灰点是按钮。每个按钮都会打开自己的幻灯片菜单。
在控制台上，我收到此特定错误。“ openbtn.addEventListener 不是函数 ”
这与此代码有关：
在 codepen 中，错误位于第 104 行
<script>
/*!
* classie - class helper functions
* classie.has( elem, 'my-class' ) -> true/false
* classie.add( elem, 'my-new-class' )
* classie.remove( elem, 'my-unwanted-class' )
* classie.toggle( elem, 'my-class' )
*/
/*jshint browser: true, strict: true, undef: true */
/*global define: false */
(function (window) {
'use strict';
// class helper functions from bonzo https://github.com/ded/bonzo
function classReg(className) {
return new RegExp("(^|s+)" + className + "(s+|$)");
}
// classList support for class management
// altho to be fair, the api sucks because it won't accept multiple classes at once
var hasClass, addClass, removeClass;
if ('classList' in document.documentElement) {
hasClass = function (elem, c) {
return elem.classList.contains(c);
};
addClass = function (elem, c) {
elem.classList.add(c);
};
removeClass = function (elem, c) {
elem.classList.remove(c);
};
} else {
hasClass = function (elem, c) {
return classReg(c).test(elem.className);
};
addClass = function (elem, c) {
if (!hasClass(elem, c)) {
elem.className = elem.className + ' ' + c;
}
};
removeClass = function (elem, c) {
elem.className = elem.className.replace(classReg(c), ' ');
};
}
function toggleClass(elem, c) {
var fn = hasClass(elem, c) ? removeClass : addClass;
fn(elem, c);
}
var classie = {
// full names
hasClass: hasClass,
addClass: addClass,
removeClass: removeClass,
toggleClass: toggleClass,
// short names
has: hasClass,
add: addClass,
remove: removeClass,
toggle: toggleClass
};
// transport
if (typeof define === 'function' && define.amd) {
// AMD
define(classie);
} else {
// browser global
window.classie = classie;
}
})(window);
/**
* main.js
* http://www.codrops.com
*
* Licensed under the MIT license.
* http://www.opensource.org/licenses/mit-license.php
*
* Copyright 2014, Codrops
* http://www.codrops.com
*/ (function () {
var bodyEl = document.body,
content = document.querySelector('.content-wrap'),
openbtn = $(".menu-button").click(function () {
$(this).next(".menu-wrap").toggleClass("show-menu");
}),
closebtn = document.getElementById('close-button'),
isOpen = false;
function init() {
initEvents();
}
function initEvents() {
openbtn.addEventListener('click', toggleMenu);
if (closebtn) {
closebtn.addEventListener('click', toggleMenu);
}
// close the menu element if the target it´s not the menu element or one of its descendants..
content.addEventListener('click', function (ev) {
var target = ev.target;
if (isOpen && target !== openbtn) {
toggleMenu();
}
});
}
function toggleMenu() {
if (isOpen) {
classie.remove(bodyEl, 'show-menu');
} else {
classie.add(bodyEl, 'show-menu');
}
isOpen = !isOpen;
}
init();
})();</script>
我研究过人们在哪里遇到过类似的 .addeventlistener 问题，但实际上他们所有的解决方案都是根据他们的代码以不同的方式执行的。我该如何在保留代码目的的同时解决这个问题？
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<script>
/*!
* classie - class helper functions
* classie.has( elem, 'my-class' ) -> true/false
* classie.add( elem, 'my-new-class' )
* classie.remove( elem, 'my-unwanted-class' )
* classie.toggle( elem, 'my-class' )
*/
/*jshint browser: true, strict: true, undef: true */
/*global define: false */
(function (window) {
'use strict';
// class helper functions from bonzo https://github.com/ded/bonzo
function classReg(className) {
return new RegExp("(^|s+)" + className + "(s+|$)");
}
// classList support for class management
// altho to be fair, the api sucks because it won't accept multiple classes at once
var hasClass, addClass, removeClass;
if ('classList' in document.documentElement) {
hasClass = function (elem, c) {
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};
addClass = function (elem, c) {
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};
}
function toggleClass(elem, c) {
var fn = hasClass(elem, c) ? removeClass : addClass;
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}
var classie = {
// full names
hasClass: hasClass,
addClass: addClass,
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// short names
has: hasClass,
add: addClass,
remove: removeClass,
toggle: toggleClass
};
// transport
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// AMD
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} else {
// browser global
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}
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* main.js
* http://www.codrops.com
*
* Licensed under the MIT license.
* http://www.opensource.org/licenses/mit-license.php
*
* Copyright 2014, Codrops
* http://www.codrops.com
*/ (function () {
var bodyEl = document.body,
content = document.querySelector('.content-wrap'),
openbtn = $(".menu-button").click(function () {
$(this).next(".menu-wrap").toggleClass("show-menu");
}),
closebtn = document.getElementById('close-button'),
isOpen = false;
function init() {
initEvents();
}
function initEvents() {
openbtn = $(".menu-button");
openbtn.click(function () {
$(this).next(".menu-wrap").toggleClass("show-menu");
});
if (closebtn) {
closebtn.addEventListener('click', toggleMenu);
}
// close the menu element if the target it´s not the menu element or one of its descendants..
content.addEventListener('click', function (ev) {
var target = ev.target;
if (isOpen && target !== openbtn) {
toggleMenu();
}
});
}
function toggleMenu() {
if (isOpen) {
classie.remove(bodyEl, 'show-menu');
} else {
classie.add(bodyEl, 'show-menu');
}
isOpen = !isOpen;
}
init();
})();</script>
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2个回答
您将
openbtn
定义为 jQuery 对象，而不是 dom 对象。您可以使用
openbtn[0]
获取 dom 元素，也可以使用 jQuery 事件处理
openbtn.on('click', function(){})
DGS
2015-08-17
问题是您尝试将 addEventListner 分配给一个对象数组，您需要循环遍历它（以某种方式）来执行此操作：
以下是有效代码：
/*!
* classie - class helper functions
* classie.has( elem, 'my-class' ) -> true/false
* classie.add( elem, 'my-new-class' )
* classie.remove( elem, 'my-unwanted-class' )
* classie.toggle( elem, 'my-class' )
*/
/*jshint browser: true, strict: true, undef: true */
/*global define: false */
(function (window) {
'use strict';
// class helper functions from bonzo https://github.com/ded/bonzo
function classReg(className) {
return new RegExp("(^|\\s+)" + className + "(\\s+|$)");
}
// classList support for class management
// altho to be fair, the api sucks because it won't accept multiple classes at once
var hasClass, addClass, removeClass;
if ('classList' in document.documentElement) {
hasClass = function (elem, c) {
return elem.classList.contains(c);
};
addClass = function (elem, c) {
elem.classList.add(c);
};
removeClass = function (elem, c) {
elem.classList.remove(c);
};
} else {
hasClass = function (elem, c) {
return classReg(c).test(elem.className);
};
addClass = function (elem, c) {
if (!hasClass(elem, c)) {
elem.className = elem.className + ' ' + c;
}
};
removeClass = function (elem, c) {
elem.className = elem.className.replace(classReg(c), ' ');
};
}
function toggleClass(elem, c) {
var fn = hasClass(elem, c) ? removeClass : addClass;
fn(elem, c);
}
var classie = {
// full names
hasClass: hasClass,
addClass: addClass,
removeClass: removeClass,
toggleClass: toggleClass,
// short names
has: hasClass,
add: addClass,
remove: removeClass,
toggle: toggleClass
};
// transport
if (typeof define === 'function' && define.amd) {
// AMD
define(classie);
} else {
// browser global
window.classie = classie;
}
})(window);
/**
* main.js
* http://www.codrops.com
*
* Licensed under the MIT license.
* http://www.opensource.org/licenses/mit-license.php
*
* Copyright 2014, Codrops
* http://www.codrops.com
*/
(function () {
var bodyEl = document.body,
content = document.querySelector('.content-wrap'),
openbtn = $(".menu-button").click(function () {
$(this).next(".menu-wrap").toggleClass("show-menu");
}),
closebtn = document.getElementById('close-button'),
isOpen = false;
function init() {
initEvents();
}
function initEvents() {
for (var i=0; i< openbtn.length ; i++){
openbtn[i].addEventListener('click', toggleMenu)
}
if (closebtn) {
closebtn.addEventListener('click', toggleMenu);
}
// close the menu element if the target it´s not the menu element or one of its descendants..
if (content){
content.addEventListener('click', function (ev) {
var target = ev.target;
if (isOpen && target !== openbtn) {
toggleMenu();
}
});
}
}
function toggleMenu() {
if (isOpen) {
classie.remove(bodyEl, 'show-menu');
} else {
classie.add(bodyEl, 'show-menu');
}
isOpen = !isOpen;
}
init();
})();
maaeab
2015-08-18