jQuery与Layui环境下监听Radio单选框改变事件的方法

<input type="radio" name="sex" checked="checked" value="1">男
<input type="radio" name="sex" value="2">女

$(document).ready(function() { 
 $('input[type=radio][name=sex]').change(function() {
  if (this.value == '1') { 
   alert("这是个男孩"); 
  } else if (this.value == '2') { 
   alert("这是个女孩"); 
  } 
 }); 
});

layui.use(['form', 'element', 'laydate'], function(){
 var jQuery = layui.jquery
 ,layer = layui.layer
 ,form = layui.form()
 ,element = layui.element();

 form.on("radio(sex)", function (data) {
  var sex = data.value;
  if (this.value == '1') { 
   alert("这是个男孩"); 
  } else if (this.value == '2') { 
   alert("这是个女孩"); 
  } 
 });
});