请问一下微信小程序延时函数如何调用自己定义的函数？

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请问一下微信小程序延时函数如何调用自己定义的函数？How does the WeChat applet delay function call the function defined by yourself?

In the development of small programs, my original idea is: modelnoon is an event click function. When it is executed, the first step is to execute the function of turnoff, and then execute the function of turnoncurtain in seconds. Now, the debugger reports that I have no definition of turnoncurtain, but I have defined it. In addition, I did not use the delay function to write one: it works normally, the first step is to turn off the light, then the second step is to close the curtain, but it turns on the light after the first step

回答：

 setTimeout(this.TurnOnCurtain, 300)  不加括号的

          let that= this;          setTimeout(() => {            that.TurnOnxxxx();          }, 2000);