HTML DOM input radio 对象

radio 对象

输入单选对象表示 type="radio" 的 HTML <input> 元素。

您可以使用 getElementById() 访问 type="radio" 的 <input> 元素：

var x = document.getElementById("myRadio");

提示：您还可以通过搜索来访问 <input type="radio">元素表格的集合。

您可以使用 document.createElement() 方法创建 type="radio" 的 <input> 元素：

var x = document.createElement("INPUT");
x.setAttribute("type", "radio");

Property	Description
autofocus	Sets or returns whether a radio button should automatically get focus when the page loads
checked	Sets or returns the checked state of a radio button
defaultChecked	Returns the default value of the checked attribute
defaultValue	Sets or returns the default value of a radio button
disabled	Sets or returns whether the radio button is disabled, or not
form	Returns a reference to the form that contains the radio button
name	Sets or returns the value of the name attribute of a radio button
required	Sets or returns whether the radio button must be checked before submitting a form
type	Returns which type of form element the radio button is
value	Sets or returns the value of the value attribute of the radio button

输入radio 对象还支持标准特性和事件。