将 JSfiddle 转换为实际网站 - 随机图像生成器网站

Question

您好，我想创建一个随机图像生成器网站，最近在网上找到了一个符合我意图的 JSfiddle 文件。我想使用 CSS 和 JS 将该 JSfiddle 文件传输到 HTML。当我在 JSfiddle 中运行它工作正常但是当我将它应用到实际网站时它只识别 HTML 和 CSS 而不是 JS，这意味着它看起来不错但不t 生成随机图像。我对编码有点陌生，不知道出了什么问题，请查看下面的编码。非常感谢。

HTML

<!DOCTYPE html>
<html>
    <head>
        <title>Random</title>
        <link rel="stylesheet" type="text/css" href="main.css">
        <script src="style.js"></script>
    </head>
    <body>

<div id="banner-message">
    <p>Hello World</p>
    <button id="button">Change image</button>
  </div>
  
  <div id="img"></div>
    
    </body>
  </html>

CSS

*{
    margin: 0;
    padding: 0;
}

header{
    background-image:linear-gradient(rgba(0,0,0,0.8),rgba(0,0,0,0.8)), url(../Arcane/Images/thefoollabel.png);
    height: 100vh;
    background-size: cover;
    background-position: center;
}

ul{
    float: right;
    list-style-type: none;
    margin-top: 25px;
}

ul li{
    display: inline-block;
}

ul li a{
    text-decoration: none;
    color: #fff;
    padding: 5px 20px;
    border: 1px solid transparent;
    transition: 0.4s ease;
}

ul li a:hover{
    background-color: #fff;
    color: black;
}

ul li.active a{
    background-color: #fff;
    color: black;
}
.logo img{
    float: left;
    width: 150px;
    height: auto;
    margin-top: 20px;
}

.main{
    max-width: 1200px;
    margin: auto;
}

.title{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}

.title h1{
    font-size: 70px;
    color: #fff;
}

.subtitle{
    position: absolute;
    text-align: center;
    top: 60%;
    left: 50%;
    transform: translate(-50%,-50%);
}

.subtitle h1{
    font-family: Helvetica;
    font-weight: 500;
    font-size: 20px;
    color: #bebc53;
}

.subsubtitle{
    position: absolute;
    text-align: center;
    top: 66%;
    left: 50%;
    transform: translate(-50%,-50%);
}

.subsubtitle h1{
    font-family: Helvetica;
    font-style: italic;
    font-weight: 500;
    font-size: 20px;
    color: #bebc53;
}

.button{
    position: absolute;
    top: 75%;
    left: 50%;
    transform: translate(-50%,-50%);
}

.btn{
    border: 1px solid #fff;
    padding: 10px 30px;
    color: #fff;
    font-size: 20px;
    text-decoration: none;
    transition: 0.4s ease;
}

.btn:hover{
    background-color: #fff;
    color: black;
}

JS

var images =[
    'https://i.ibb.co/37bntqy/img-2.png',
    'https://i.ibb.co/yXcJBVg/img-1.png',
    ];
    
    // Set default image for load
    document.getElementById('img').style.backgroundImage = "url('" + images[0] + "')";
    
    var button = document.getElementById("button").addEventListener("click", function(){
        // handle click and change background image
        var r = Math.floor(Math.random() * images.length);
      document.getElementById('img').style.backgroundImage = "url('" + images[r] + "')";
    });

Answer 1

JSFiddle 默认执行onload。您需要将 JS 包装在负载处理程序中

const images = [
  'https://i.ibb.co/37bntqy/img-2.png',
  'https://i.ibb.co/yXcJBVg/img-1.png',
];

window.addEventListener("load",function() {
  document.getElementById('img').style.backgroundImage = "url('" + images[0] + "')";
  document.getElementById("button").addEventListener("click", function(){
    // handle click and change background image
    var r = Math.floor(Math.random() * images.length);
    document.getElementById('img').style.backgroundImage = "url('" + images[r] + "')";
  });
})

此代码可以进入头部或外部 JS 文件和 main.css

中的 CSS

const images = [
  'https://i.ibb.co/37bntqy/img-2.png',
  'https://i.ibb.co/yXcJBVg/img-1.png',
];

window.addEventListener("load", function() {

  document.getElementById('imgDiv').style.backgroundImage = "url('" + images[0] + "')";
  document.getElementById("button").addEventListener("click", function() {
    // handle click and change background image
    var r = Math.floor(Math.random() * images.length);
    document.getElementById('imgDiv').style.backgroundImage = "url('" + images[r] + "')";
  });
})

* {
  margin: 0;
  padding: 0;
}

header{
    background-image:linear-gradient(rgba(0,0,0,0.8),rgba(0,0,0,0.8)), url(../Arcane/Images/thefoollabel.png);
    height: 100vh;
    background-size: cover;
    background-position: center;
}

ul {
  float: right;
  list-style-type: none;
  margin-top: 25px;
}

ul li {
  display: inline-block;
}

ul li a {
  text-decoration: none;
  color: #fff;
  padding: 5px 20px;
  border: 1px solid transparent;
  transition: 0.4s ease;
}

ul li a:hover {
  background-color: #fff;
  color: black;
}
#imgDiv {  min-height: 1000px; }

<div id="banner-message">
  <p>Hello World</p>
  <button id="button">Change image</button>
</div>

<div id="imgDiv">Test
</div>

Answer 2

欢迎来到 Whosebug，

代码是正确的，但您应该做的就是在正文末尾添加加载 script 文件的 <script> 标记，javascript 无法获取您的 img div 因为 dom 元素尚未加载。

<script src="style.js"></script>
</body>

将 JSfiddle 转换为实际网站 - 随机图像生成器网站

Transform JSfiddle to actual website - random image generator website

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