在JavaScript中，可通过检查单选框的checked属性是否为true来判断其是否被选中，对多个单选框可采用for循环逐一检测，进而实现状态判断功能。 3、 在表单中添加三个类型为radio的输入项，分别为其设置唯一的id，以便后续通过id获取对应的input元素对象，实现选项的独立控制与操作。

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第1章：引言 - 从jQuery到AI的前端变革1.1 前端开发的时代变迁还记得2005年的前端开发吗？那时候，我们用记事本编写HTML，用FTP上传文件，用IE6调试页面。一个简单的轮播图效果，需要写上百行JavaScript代码。而今天，我们有了Vite的秒级热更新，有了GitHub ...