1fd4177354
* fix: seed code doesn't match description [english] * fix: seed code doesn't match description [chinese]
94 lines
2.6 KiB
Markdown
94 lines
2.6 KiB
Markdown
---
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id: 587d7fad367417b2b2512be1
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title: Handle Click Events with JavaScript using the onclick property
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challengeType: 6
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videoUrl: ''
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localeTitle: 使用onclick属性处理使用JavaScript单击事件
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---
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## Description
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<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>
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## Instructions
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<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>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: 您的代码应使用<code>document.getElementById</code>方法来选择<code>getMessage</code>元素。
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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.");'
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- text: 您的代码应添加<code>onclick</code>事件处理程序。
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testString: 'assert(typeof document.getElementById("getMessage").onclick === "function", "Your code should add an <code>onclick</code> event handler.");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='html-seed'>
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```html
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<script>
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document.addEventListener('DOMContentLoaded',function(){
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// Add your code below this line
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// Add your code above this line
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});
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</script>
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<style>
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body {
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text-align: center;
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font-family: "Helvetica", sans-serif;
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}
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h1 {
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font-size: 2em;
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font-weight: bold;
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}
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.box {
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border-radius: 5px;
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background-color: #eee;
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padding: 20px 5px;
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}
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button {
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color: white;
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background-color: #4791d0;
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border-radius: 5px;
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border: 1px solid #4791d0;
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padding: 5px 10px 8px 10px;
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}
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button:hover {
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background-color: #0F5897;
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border: 1px solid #0F5897;
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}
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</style>
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<h1>Cat Photo Finder</h1>
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<p class="message">
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The message will go here
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</p>
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<p>
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<button id="getMessage">
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Get Message
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</button>
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</p>
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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