将JSfiddle转换为实际网站-随机图像生成器网站

问题描述 投票：0回答：2

您好，我想创建一个随机图像生成器网站，最近在网上找到了适合我意图的JSfiddle文件。我想使用CSS和JS将该JSfiddle文件传输到HTML。当我在JSfiddle中运行它时，它可以正常工作，但是当我将其应用于实际网站时，它只能识别HTML和CSS，而不能识别JS，这意味着它看起来不错，但不会生成随机图像。我对编码有点陌生，不知道出了什么问题，请在下面查看我的编码。非常感谢。

HTML

https://jsfiddle.net/alicevo12/4xs7ebao/show/

<!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] + "')";
    });
javascript html jsfiddle
2个回答
0
投票

JSFiddle默认执行onload。您需要将JS包装在加载处理程序中

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] + "')";
  });
})

此代码可以放在头中，也可以在外部JS文件和main.css中的CSS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('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>
0
投票

欢迎使用Stackoverflow，>>

代码是正确的，但是您要做的就是在正文的末尾添加<script>标记以加载script文件，javascript无法获取img div，因为dom元素尚未加载。 

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