详解html中radio值的获取、赋值、注册事件示例

<span>group1:</span> 
<input type="radio" id="radio1" checked="checked" name="group1" />radio1 
<input type="radio" id="radio2" name="group1" />radio2 
<input type="radio" id="radio3" name="group1" />radio3 
<span>group2:</span> 
<input type="radio" id="radio4" checked="checked" name="group2" />radio4 
<input type="radio" id="radio5" name="group2" />radio5 
<input type="radio" id="radio6" name="group2" />radio6

var group1 = $("[name='group1']").filter(":checked"); 
console.log(group1.attr("id"));

$("#radio2").attr("checked", "checked");

$("#radio1").removeAttr("checked");

$("[name='group1']").on("change", 
function (e) { 
console.log($(e.target).val()); 
} 
);