form表单转换为Json数据

<form id="formDemo" class="layui-form">
<table class="layui-table" lay-even>
<colgroup>
<col width="100">
<col width="200">
<col>
</colgroup>
<tbody>
<tr>
<th>用户名</th>
<td id="userName">
<div class="layui-form-item layui-input-inline">
<input tyep="text" name="userName" class="layui-input">
</div>
</td>
</tr>
<tr>
<th>登录密码</th>
<td id="password">
<div class="layui-form-item layui-input-inline">
<input tyep="text" name="password" class="layui-input">
</div>
</td>
</tr>
</tbody>
</table>
</form>

<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="jquery.serializejson.js"></script>

<script type="text/javascript">
function getUser(){
console.log($('#formDemo').serializeJSON());
console.log(JSON.stringify($('#formDemo').serializeJSON()));
return JSON.stringify($('#formDemo').serializeJSON());
}
</script>