106 lines
2.4 KiB
Markdown
106 lines
2.4 KiB
Markdown
---
|
||
id: 587d7fae367417b2b2512be6
|
||
title: Render Images from Data Sources
|
||
challengeType: 6
|
||
videoUrl: ''
|
||
localeTitle: 从数据源渲染图像
|
||
---
|
||
|
||
## Description
|
||
<section id="description">最后几个挑战表明，JSON数组中的每个对象都包含一个<code>imageLink</code>键，其值为cat图像的URL。循环浏览这些对象时，可以使用此<code>imageLink</code>属性在<code>img</code>元素中显示此图像。这是执行此操作的代码： <code>html += "<img src = '" + val.imageLink + "' " + "alt='" + val.altText + "'>";</code> </section>
|
||
|
||
## Instructions
|
||
<section id="instructions">添加代码以在<code>img</code>标记中使用<code>imageLink</code>和<code>altText</code>属性。 </section>
|
||
|
||
## Tests
|
||
<section id='tests'>
|
||
|
||
```yml
|
||
tests:
|
||
- text: 您应该使用<code>imageLink</code>属性来显示图像。
|
||
testString: 'assert(code.match(/val\.imageLink/g), "You should use the <code>imageLink</code> property to display the images.");'
|
||
|
||
```
|
||
|
||
</section>
|
||
|
||
## Challenge Seed
|
||
<section id='challengeSeed'>
|
||
|
||
<div id='html-seed'>
|
||
|
||
```html
|
||
<script>
|
||
document.addEventListener('DOMContentLoaded',function(){
|
||
document.getElementById('getMessage').onclick=function(){
|
||
req=new XMLHttpRequest();
|
||
req.open("GET",'/json/cats.json',true);
|
||
req.send();
|
||
req.onload=function(){
|
||
json=JSON.parse(req.responseText);
|
||
var html = "";
|
||
json.forEach(function(val) {
|
||
html += "<div class = 'cat'>";
|
||
// Add your code below this line
|
||
|
||
|
||
// Add your code above this line
|
||
html += "</div><br>";
|
||
});
|
||
document.getElementsByClassName('message')[0].innerHTML=html;
|
||
};
|
||
};
|
||
});
|
||
</script>
|
||
<style>
|
||
body {
|
||
text-align: center;
|
||
font-family: "Helvetica", sans-serif;
|
||
}
|
||
h1 {
|
||
font-size: 2em;
|
||
font-weight: bold;
|
||
}
|
||
.box {
|
||
border-radius: 5px;
|
||
background-color: #eee;
|
||
padding: 20px 5px;
|
||
}
|
||
button {
|
||
color: white;
|
||
background-color: #4791d0;
|
||
border-radius: 5px;
|
||
border: 1px solid #4791d0;
|
||
padding: 5px 10px 8px 10px;
|
||
}
|
||
button:hover {
|
||
background-color: #0F5897;
|
||
border: 1px solid #0F5897;
|
||
}
|
||
</style>
|
||
<h1>Cat Photo Finder</h1>
|
||
<p class="message box">
|
||
The message will go here
|
||
</p>
|
||
<p>
|
||
<button id="getMessage">
|
||
Get Message
|
||
</button>
|
||
</p>
|
||
|
||
```
|
||
|
||
</div>
|
||
|
||
|
||
|
||
</section>
|
||
|
||
## Solution
|
||
<section id='solution'>
|
||
|
||
```js
|
||
// solution required
|
||
```
|
||
</section>
|