我正在寻找一种方法将这个jQuery代码(在响应式菜单部分中使用)转换为纯JavaScript。
如果难以实现,可以使用其他JavaScript框架。
$('.btn-navbar').click(function()
{
$('.container-fluid:first').toggleClass('menu-hidden');
$('#menu').toggleClass('hidden-phone');
if (typeof masonryGallery != 'undefined')
masonryGallery();
});
答案 0 :(得分:165)
2014回答:classList.toggle()
is the standard and supported by most browsers。
较旧的浏览器可以使用use classlist.js for classList.toggle():
var menu = document.querySelector('.menu') // Using a class instead, see note below.
menu.classList.toggle('hidden-phone');
顺便说一句,您不应该使用ID(they leak globals into the JS window
object)。
答案 1 :(得分:10)
看一下这个例子:JS Fiddle
function toggleClass(element, className){
if (!element || !className){
return;
}
var classString = element.className, nameIndex = classString.indexOf(className);
if (nameIndex == -1) {
classString += ' ' + className;
}
else {
classString = classString.substr(0, nameIndex) + classString.substr(nameIndex+className.length);
}
element.className = classString;
}
答案 2 :(得分:4)
这个也适用于早期版本的IE。
function toogleClass(ele, class1) {
var classes = ele.className;
var regex = new RegExp('\\b' + class1 + '\\b');
var hasOne = classes.match(regex);
class1 = class1.replace(/\s+/g, '');
if (hasOne)
ele.className = classes.replace(regex, '');
else
ele.className = classes + class1;
}

.red {
background-color: red
}
div {
width: 100px;
height: 100px;
margin-bottom: 10px;
border: 1px solid black;
}

<div class="does red redAnother " onclick="toogleClass(this, 'red')"></div>
<div class="does collapse navbar-collapse " onclick="toogleClass(this, 'red')"></div>
&#13;
答案 3 :(得分:4)
这是用ES6实现的解决方案
seed.rb
用法示例
<script>
document.addEventListener( 'wpcf7mailsent', function( event ) {
location = 'http://example.com/';
}, false );
</script>
答案 4 :(得分:3)
这可能更简洁:
function toggle(element, klass) {
var classes = element.className.match(/\S+/g) || [],
index = classes.indexOf(klass);
index >= 0 ? classes.splice(index, 1) : classes.push(klass);
element.className = classes.join(' ');
}
答案 5 :(得分:2)
不需要正则表达式只需使用classlist
var id=document.getElementById('myButton');
function toggle(el,classname){
if(el.classList.contains(classname)){
el.classList.remove(classname)
}
else{
el.classList.add(classname)
}
}
id.addEventListener('click',(e)=>{
toggle(e.target,'red')
})
.red{
background:red
}
<button id="myButton">Switch</button>
上面例子的简单用法
var id=document.getElementById('myButton');
function toggle(el,classname){
el.classList.toggle(classname)
}
id.addEventListener('click',(e)=>{
toggle(e.target,'red')
})
.red{
background:red
}
<button id="myButton">Switch</button>
答案 6 :(得分:0)
试试这个(希望它会起作用):
// mixin (functionality) for toggle class
function hasClass(ele, clsName) {
var el = ele.className;
el = el.split(' ');
if(el.indexOf(clsName) > -1){
var cIndex = el.indexOf(clsName);
el.splice(cIndex, 1);
ele.className = " ";
el.forEach(function(item, index){
ele.className += " " + item;
})
}
else {
el.push(clsName);
ele.className = " ";
el.forEach(function(item, index){
ele.className += " " + item;
})
}
}
// get all DOM element that we need for interactivity.
var btnNavbar = document.getElementsByClassName('btn-navbar')[0];
var containerFluid = document.querySelector('.container-fluid:first');
var menu = document.getElementById('menu');
// on button click job
btnNavbar.addEventListener('click', function(){
hasClass(containerFluid, 'menu-hidden');
hasClass(menu, 'hidden-phone');
})`enter code here`
答案 7 :(得分:0)
如果要使用本机解决方案将类切换为元素,可以尝试此建议。我在不同的情况下品尝过它,无论有没有其他类都在元素上,我觉得它很有用:
(function(objSelector, objClass){
document.querySelectorAll(objSelector).forEach(function(o){
o.addEventListener('click', function(e){
var $this = e.target,
klass = $this.className,
findClass = new RegExp('\\b\\s*' + objClass + '\\S*\\s?', 'g');
if( !findClass.test( $this.className ) )
if( klass )
$this.className = klass + ' ' + objClass;
else
$this.setAttribute('class', objClass);
else
{
klass = klass.replace( findClass, '' );
if(klass) $this.className = klass;
else $this.removeAttribute('class');
}
});
});
})('.yourElemetnSelector', 'yourClass');
答案 8 :(得分:-1)
以下是在className上使用split(“”)的IE&gt; = 9的代码:
function toggleClass(element, className) {
var arrayClass = element.className.split(" ");
var index = arrayClass.indexOf(className);
if (index === -1) {
if (element.className !== "") {
element.className += ' '
}
element.className += className;
} else {
arrayClass.splice(index, 1);
element.className = "";
for (var i = 0; i < arrayClass.length; i++) {
element.className += arrayClass[i];
if (i < arrayClass.length - 1) {
element.className += " ";
}
}
}
}