我可以制作一个 function 根据按下的键返回一个 integer (nodejs)

Question

I'm using nodejs and i just need a function that when i call returns the value of the key pressed (0 if no key pressed).

I have tried using ioHook but that just executes a function whenever a key is pressed.

Answer 1

This is how I would do it on simple js This is not on node js but the code should look like the same only with a different event listener name so I decided to post this and it may help you simulate it on backend

const getCurrentKey = () => new Promise((resolve , reject) =>{

  function handleKeyDown(event){
      resolve(event);
      document.removeEventListener('keydown' , handleKeyDown) // removing the event listener so it'll not be triggered along with others next time
  }

  document.addEventListener('keydown' , handleKeyDown)

})

and it returns a Promise so for a simple example it can be used like below:

async function test(){
  const e = await getCurrentKey();
}