HTML DOM alt 属性
JavaScript基础 2022-06-08 16:19:5912小码哥的IT人生shichen
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>
TIY
完整实例【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>
可以使用本站在线JavaScript测试工具测试上述代码运行效果：http://www.phpcodeweb.com/runjs.html
