### 2.弹出层 - 在要操作的元素上加上data-params= "" 和 class="modal-iframe" 即可 ``` <button class="layui-btn layui-btn-normal modal-iframe" data-params='{"content": "{:url(\'rbac/roleAdd\')}", "title": "添加角色","area":"800px,600px"}' >添加角色</button> ```