[英]When I try pause and play in jsFiddle, my code works but it doesn't work in my html page
[英]i try to create a navbar but my javascript code doesn't work
所以你好,我正在尝试创建一个导航栏,事情进展顺利,但是当我在导航栏的响应性工作时,我的 addeventlistener function 不起作用:这是我的 html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<link rel="stylesheet" href="style.css">
<script src="app.js"></script>
<link href="https://fonts.googleapis.com/css2?family=Poppins:wght@600&display=swap" rel="stylesheet">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Test Nav</title>
</head>
<body>
<nav class="navbar">
<h4 class="logo">Nav</h4>
<ul class="navlinks">
<li>
<a href="#" >Home</a>
</li>
<li>
<a href="#" >Work</a>
</li>
<li>
<a href="#" >About us</a>
</li>
<li>
<a href="#" >Projects</a>
</li>
</ul>
<div class="burger">
<div class="bar1"></div>
<div class="bar2"></div>
<div class="bar3"></div>
</div>
</nav>
</body>
</html>
我的 css:
*{
margin: 0;
padding: 0;
box-sizing: border-box;
}
.navbar{
display: flex;
justify-content: space-around;
align-items: center;
min-height: 8vh;
background-color: black;
font-family: 'Poppins', sans-serif;
}
.logo{
color: white;
font-size: 20px;
text-transform: uppercase;
letter-spacing: 5px;
}
.navlinks{
display: flex;
justify-content: space-around;
width: 30%;
}
.navlinks a:hover{
background-color: rgb(37, 156, 196);
}
.navlinks li{
list-style: none;
}
.navlinks a{
color: white;
text-decoration: none;
letter-spacing: 3px;
font-weight: bold;
font-size: 14px;
}
.burger{
cursor: pointer;
display: none;
}
.burger div{
width: 25px;
height: 2px;
background-color: white;
margin: 5px;
}
@media screen and (max-width:1024px){
.navlinks{
width: 60%;
}
}
@media screen and (max-width:768px){
body{
overflow-x: hidden;
}
.navlinks{
position: fixed;
right: 0px;
height: 92vh;
top: 8vh;
background-color: black;
display: flex;
flex-direction: column;
align-items: center;
width: 50%;
transform: translateX(100%);
transition: transform 0.5s ease-in;
}
.navlinks li{
opacity: 0;
}
.burger{
display: block;
}
}
.nav-active{
transform: translateX(0%);
}
@keyframes navLinkFade{
from{
opacity: 0;
transform: translateX(50px);
}
to{
opacity: 1;
transform: translateX(0px);
}
}
这是我的 javascript 代码:
const navSlide = () => {
const burger = document.querySelector('.burger')
const nav = document.querySelector('.navlinks')
burger . addEventListener('click',()=>{
nav.classList.toggle('nav-active')
})
}
navSlide();
我在这个论坛上很新,但我听说它是最受欢迎的,我的代码行让我很生气所以是的,再次感谢你回答我的帖子
很高兴看到你是新来的,并决定加入!
不使用 jQuery,你可以使用这个:
const navSlide = () => {
const burger = document.querySelector('.burger')
const nav = document.querySelector('.navlinks')
burger . addEventListener('click',()=>{
nav.classList.toggle('nav-active')
})
}
document.addEventListener("DOMContentLoaded", function(event) {
navSlide();
});
基本上,这段代码将等到页面加载(因此所有元素都存在于 DOM 中,这意味着document.querySelector
将起作用),然后它附加事件侦听器。 这是避免慢速渲染浏览器等问题的最佳实践,而不依赖于浏览器最后渲染脚本。
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