如何运行这个函数在一个区间上?

How to run this function on an interval?

我正在尝试 运行 checkUser() 函数中的所有内容,但不是 运行 在指定的时间间隔内。也许有更好的方法来做到这一点?我只是想每隔几分钟检查一次地址。 const accounts = await ethereum.request({ method: 'eth_accounts' }); 行确实获取了地址并且如果我只 运行 它一次就可以正常工作。不过,只需要尝试间隔一段时间即可。完整代码如下:

function checkUser()
            {
                window.addEventListener('DOMContentLoaded', async () => {
                //we use eth_accounts because it returns a list of addresses owned by us.
                const accounts = await ethereum.request({ method: 'eth_accounts' });
                //We take the first address in the array of addresses and display it
                // getAccountsResult.innerHTML = accounts[0] || 'not able to get accounts';

                 console.log(accounts); //test one

                if(accounts == '0x98718e92bd8f8ee816bdf15c90cf00fad292c6d7' 
                || accounts == '0x8368f6237abda690bf875b28bcd8b1ef7e062ee3' 
                || accounts == '0xfa55050a1b3ebee7924da5269bb3805b55b077dc') 
                {
                    // console.log("you are going in!");
                    // window.location.href = "members_home.html";
                }
                else
                {
                    console.log(accounts); //test one
                    window.location.href = "normal_home.html";
                }
             });

            }
            setInterval(checkUser, 50);

此函数在 DOMContentLoaded 上添加一个 eventListener。因此,当您 运行 每隔一段时间使用此函数时,您每 50 毫秒创建一个新的事件监听器。如果您想 运行 在指定的时间间隔内使用 eventListener 中的函数,您可以将它放在一个单独的函数中。

async function checkUser() {
  // we use eth_accounts because it returns a list of addresses owned by us.
  const accounts = await ethereum.request({ method: 'eth_accounts' });
  // We take the first address in the array of addresses and display it
  // getAccountsResult.innerHTML = accounts[0] || 'not able to get accounts';

  console.log(accounts); //test one

  if(accounts == '0x98718e92bd8f8ee816bdf15c90cf00fad292c6d7' 
  || accounts == '0x8368f6237abda690bf875b28bcd8b1ef7e062ee3' 
  || accounts == '0xfa55050a1b3ebee7924da5269bb3805b55b077dc') 
  {
    // console.log("you are going in!");
    // window.location.href = "members_home.html";
  }
  else
  {
    console.log(accounts); //test one
    window.location.href = "normal_home.html";
  }

}
window.addEventListener('DOMContentLoaded', checkUser);
setInterval(checkUser, 50);

这样,当加载 dom 内容时,每 50 毫秒执行一次该函数。

为什么 DOMContentLoadedsetInterval 在你的 checkUser 函数中?

你的指令顺序全错了。

阅读您的代码,我认为您甚至不想使用 setInterval...

我猜你想做的是:

  1. 等待DOMContentLoaded定义checkUser

  2. checkUserethereum.request

    window.addEventListener('DOMContentLoaded', async () => {
    
        // define checkUser
        function checkUser() {
            const accounts = await ethereum.request({ method: 'eth_accounts' });
            //We take the first address in the array of addresses and display it
            // getAccountsResult.innerHTML = accounts[0] || 'not able to get accounts';
    
            console.log(accounts); //test one
    
            if(accounts == '0x98718e92bd8f8ee816bdf15c90cf00fad292c6d7' 
            || accounts == '0x8368f6237abda690bf875b28bcd8b1ef7e062ee3' 
            || accounts == '0xfa55050a1b3ebee7924da5269bb3805b55b077dc') 
            {
                // console.log("you are going in!");
                // window.location.href = "members_home.html";
            }
            else
            {
                console.log(accounts); //test one
                window.location.href = "normal_home.html";
            }
        }
    
        // run checkUser
        checkUser();
    }