如题，
this.myTest = new Laya.Text()
this.myTest.pos(0, 0)
this.myTest.size(100, 100)
this.myTest.fontSize = 13
this.myTest.color = "#ffffff"
this.myTest.align = "center"
this.addChild([size=12]this[/size][size=12].[/size][size=12]my[/size][size=12]Test[/size])
this.timer.loop(10, this, this.timerClick)
timerClick() {
this.myTest.changeText("改变的文本")
}
