实现无障碍工具条所有代码
时间: 2024-05-14 21:12:45 浏览: 4
无障碍工具条(Accessibility Toolbar)是一款用于检查网页无障碍性的浏览器插件。以下是该工具条的HTML、CSS、JavaScript代码实现。
HTML代码:
```
<div id="accessibility-toolbar">
<button class="accessibility-tool" id="accessibility-tool-contrast" title="Toggle contrast">Contrast</button>
<button class="accessibility-tool" id="accessibility-tool-font-size" title="Increase font size">Font Size</button>
<button class="accessibility-tool" id="accessibility-tool-dyslexia" title="Enable dyslexia font">Dyslexia</button>
<button class="accessibility-tool" id="accessibility-tool-highlight" title="Highlight links, headings, and form elements">Highlight</button>
</div>
```
CSS代码:
```
#accessibility-toolbar {
position: fixed;
bottom: 0;
right: 0;
z-index: 9999;
background-color: #fff;
border: 1px solid #ccc;
padding: 5px;
}
.accessibility-tool {
display: inline-block;
margin-right: 5px;
font-size: 14px;
line-height: 1.5;
padding: 5px;
border: 1px solid #ccc;
background-color: #f5f5f5;
color: #333;
cursor: pointer;
}
.accessibility-tool:hover {
background-color: #e5e5e5;
}
```
JavaScript代码:
```
// Toggle contrast
document.getElementById('accessibility-tool-contrast').addEventListener('click', function() {
document.body.classList.toggle('high-contrast');
});
// Increase font size
document.getElementById('accessibility-tool-font-size').addEventListener('click', function() {
var currentSize = parseInt(window.getComputedStyle(document.body).getPropertyValue('font-size'));
var newSize = currentSize + 2;
document.body.style.fontSize = newSize + 'px';
});
// Enable dyslexia font
document.getElementById('accessibility-tool-dyslexia').addEventListener('click', function() {
document.body.classList.toggle('dyslexia-font');
});
// Highlight links, headings, and form elements
document.getElementById('accessibility-tool-highlight').addEventListener('click', function() {
document.body.classList.toggle('highlight-links');
document.body.classList.toggle('highlight-headings');
document.body.classList.toggle('highlight-form-elements');
});
```