HTML DOM alt 属性
定义和用法
alt 属性可设置或返回在浏览器不支持单选按钮时显示的替代文本。
语法
- radioObject.alt=alternate_text
实例
下面的例子可返回单选按钮的 alt 文本:
- <html>
- <body>
- <form>
- Male: <input id="male" alt="male" type="radio"
- name="Sex" value="Male" />
- <br />
- Female: <input id="female" alt="female" type="radio"
- name="Sex" value="Female" />
- </form>
- <p>The alt text for the radio buttons are:
- <script type="text/javascript">
- document.write(
document.getElementById('male').alt
);- document.write(" and ");
- document.write(
document.getElementById('female').alt
);- </script></p>
- </body>
- </html>