[]Button 添加事件不执行？

Laya.init(1351, 760, Laya.WebGL);

let Stage = Laya.stage;

let Button = Laya.Button;

let Event = Laya.Event;

let Handler = Laya.Handler;



let rightBtn = new Button();

rightBtn.labelFont = "Microsoft YaHei";

rightBtn.label = 'right';

rightBtn.labelSize = 60;

rightBtn.labelColors = '#fff';

rightBtn.labelStrokeColor ='#FF8502';

rightBtn.labelStroke = 10;

rightBtn.x = 100;

rightBtn.y = 200;

rightBtn.on(Event.CLICK, this, clickHandler);

rightBtn.clickHandler = Handler.create(this, function () {

    console.log('click handler');

});

function clickHandler () {

    console.log('on click')

}



Stage.addChild(rightBtn);