Traditional Culture Encyclopedia - Traditional stories - cocosstudio a csd interface a join another csd interface b, then how the program take the elements of interface b?

cocosstudio a csd interface a join another csd interface b, then how the program take the elements of interface b?

this.mainScene = ccs.load(cfg.Csd.main);

this.addChild(this.mainScene.node);

var pveButton = ccui.helper. seekWidgetByName(this.mainScene.node, "BtnPVP_8");