let btn:Button = cell.getChildByName("button的name");

小伦

import Button = laya.ui.Button;
let itemBtn:Button = cell.getChildByName("mItemBtn");
这样会报一个错：Type "Node" is not assignable to type "Button". Property "toggle" is missing in type "Node";
对着官网list例子做的，不知道为啥会报这个错？

小伦

解决了
需要将Node转为Button
let itemBtn:Button = cell.getChildByName("mItemBtn") as Button;即可