94 lines
2.6 KiB
Markdown
94 lines
2.6 KiB
Markdown
---
|
||
id: 587d7fad367417b2b2512be1
|
||
title: Handle Click Events with JavaScript using the onclick property
|
||
challengeType: 6
|
||
videoUrl: ''
|
||
localeTitle: 使用onclick属性处理使用JavaScript单击事件
|
||
---
|
||
|
||
## Description
|
||
<section id="description">您希望代码仅在页面加载完成后执行。为此，您可以将JavaScript事件附加到名为<code>DOMContentLoaded</code>的文档中。这是执行此操作的代码： <blockquote> document.addEventListener（'DOMContentLoaded'，function（）{ <br><br> }）; </blockquote>您可以实现<code>DOMContentLoaded</code>函数内部的事件处理程序。您可以通过添加以下代码来实现<code>onclick</code>事件处理程序，该处理程序在用户单击id为<code>getMessage</code>的元素时触发： <blockquote> 。的document.getElementById（ '的getMessage'）的onclick =函数（）{}; </blockquote></section>
|
||
|
||
## Instructions
|
||
<section id="instructions">在<code>DOMContentLoaded</code>函数内为id为<code>getMessage</code>的元素添加一个click事件处理程序。 </section>
|
||
|
||
## Tests
|
||
<section id='tests'>
|
||
|
||
```yml
|
||
tests:
|
||
- text: 您的代码应使用<code>document.getElementById</code>方法来选择<code>getMessage</code>元素。
|
||
testString: 'assert(code.match(/document\.getElementById\(\s*?("|")getMessage\1\s*?\)/g), "Your code should use the <code>document.getElementById</code> method to select the <code>getMessage</code> element.");'
|
||
- text: 您的代码应添加<code>onclick</code>事件处理程序。
|
||
testString: 'assert(typeof document.getElementById("getMessage").onclick === "function", "Your code should add an <code>onclick</code> event handler.");'
|
||
|
||
```
|
||
|
||
</section>
|
||
|
||
## Challenge Seed
|
||
<section id='challengeSeed'>
|
||
|
||
<div id='html-seed'>
|
||
|
||
```html
|
||
<script>
|
||
document.addEventListener('DOMContentLoaded',function(){
|
||
// Add your code below this line
|
||
|
||
|
||
// Add your code above this line
|
||
});
|
||
</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">
|
||
The message will go here
|
||
</p>
|
||
<p>
|
||
<button id="getMessage">
|
||
Get Message
|
||
</button>
|
||
</p>
|
||
|
||
```
|
||
|
||
</div>
|
||
|
||
|
||
|
||
</section>
|
||
|
||
## Solution
|
||
<section id='solution'>
|
||
|
||
```js
|
||
// solution required
|
||
```
|
||
</section>
|