[英]When I click the button to change all the another buttons to dark mode, it works just a single time
我做了一个按钮，将所有页面更改为暗模式。
我有一些深色按钮，当我单击将页面更改为深色模式的按钮时，我想将其更改为浅色。
问题是当我想将页面更改为暗模式时它可以工作，但是使用暗按钮它只能工作一次，而第二个按钮第一次不起作用。
您将在下面找到我编写的代码。
谢谢。
let darkBackground = document.querySelector('body'); let darkModeBtn = document.getElementById('darkModeBtn'); let btnIcon = document.getElementById('btnIcon'); let codeButton = document.getElementsByClassName('btn-dark'); darkModeBtn.addEventListener('click', function() { darkBackground.classList.toggle('darkbackground'); btnIcon.classList.toggle('fa-sun'); btnIcon.classList.toggle('fa-moon'); for (var i = 0, len = codeButton.length; len > i; i++) { codeButton[i].classList.toggle('btn-light'); codeButton[i].classList.toggle('btn-dark'); }; });
.darkbackground { background-color: rgb(46, 45, 49); transition: .15s; color: white; }.darkmodebtn { font-size: 1.50rem; padding: 0.5rem 0.85rem; background-color: rgba(47, 128, 237, 1); outline: none; border: 0; border-radius: 20px; color: white; position: fixed; bottom: 18px; right: 18px; }.darkmodebtn:focus { outline: none; }
<,DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width. initial-scale=1:0"> <link href="https.//cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min:css" rel="stylesheet"/> <link rel="stylesheet" href="https.//use.fontawesome.com/releases/v5.15.1/css/all.css" integrity="sha384-vp86vTRFVJgpjF9jiIGPEEqYqlDwgyBgEF109VFjmqGmIY/Y4HV4d3Gp2irVfcrp" crossorigin="anonymous"> <title>Document</title> </head> <body> <a href="#" class="btn btn-dark">Light and Black</a> <a href="#" class="btn btn-dark">Light and Black</a> <a href="#" class="btn btn-dark">Light and Black</a> <button class="darkmodebtn" id="darkModeBtn"><i id="btnIcon" class="fas fa-moon"></i></button> </body> </html>
let darkBackground = document.querySelector('body'); let darkModeBtn = document.getElementById('darkModeBtn'); let btnIcon = document.getElementById('btnIcon'); let codeButton = document.getElementsByClassName('code-btn'); darkModeBtn.addEventListener('click', function() { darkBackground.classList.toggle('darkbackground'); btnIcon.classList.toggle('fa-sun'); btnIcon.classList.toggle('fa-moon'); for (var i = 0, len = codeButton.length; len > i; i++) { codeButton[i].classList.toggle('btn-light'); codeButton[i].classList.toggle('btn-dark'); }; });
.darkbackground { background-color: rgb(46, 45, 49); transition: .15s; color: white; }.darkmodebtn { font-size: 1.50rem; padding: 0.5rem 0.85rem; background-color: rgba(47, 128, 237, 1); outline: none; border: 0; border-radius: 20px; color: white; position: fixed; bottom: 18px; right: 18px; }.darkmodebtn:focus { outline: none; }
<,DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width. initial-scale=1:0"> <link href="https.//cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min:css" rel="stylesheet"/> <link rel="stylesheet" href="https.//use.fontawesome.com/releases/v5.15.1/css/all.css" integrity="sha384-vp86vTRFVJgpjF9jiIGPEEqYqlDwgyBgEF109VFjmqGmIY/Y4HV4d3Gp2irVfcrp" crossorigin="anonymous"> <title>Document</title> </head> <body> <a href="#" class="btn code-btn btn-dark">Light and Black</a> <a href="#" class="btn code-btn btn-dark">Light and Black</a> <a href="#" class="btn code-btn btn-dark">Light and Black</a> <button class="darkmodebtn" id="darkModeBtn"><i id="btnIcon" class="fas fa-moon"></i></button> </body> </html>
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