94 lines
2.4 KiB
Markdown
94 lines
2.4 KiB
Markdown
---
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id: 587d7fad367417b2b2512be2
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title: Change Text with click Events
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challengeType: 6
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videoUrl: ''
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localeTitle: 单击“事件”更改文本
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---
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## Description
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<section id="description">当click事件发生时，您可以使用JavaScript来更新HTML元素。例如，当用户单击“获取消息”按钮时，它会使用类<code>message</code>更改元素的文本，使其<code>message</code> “此消息是”。这可以通过在click事件中添加以下代码来实现： <code>document.getElementsByClassName('message')[0].textContent="Here is the message";</code> </section>
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## Instructions
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<section id="instructions">在<code>onclick</code>事件处理程序中添加代码，以更改<code>message</code>元素内的文本，说“这是消息”。 </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.getElementsByClassName</code>方法选择具有类<code>message</code>的元素，并将其<code>textContent</code>设置为给定的字符串。
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testString: 'assert(code.match(/document\.getElementsByClassName\(\s*?("|")message\1\s*?\)\[0\]\.textContent\s*?=\s*?("|")Here is the message\2/g), "Your code should use the <code>document.getElementsByClassName</code> method to select the element with class <code>message</code> and set its <code>textContent</code> to the given string.");'
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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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document.getElementById('getMessage').onclick=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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});
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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 box">
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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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