nodeJS 异步处理

Question

mCon = false;
 
function login()  {
    var sCmd = "...";
    mCon = false;
    SendCmdSocket(sCmd);
 
    console.log("### mCon : " + mCon); <-- Here
}
 
function SendCmdSocket(sCmd)  {
    var success = socket.write(sCmd);
}
 
socket.on('data', function(chunk) {
    OnReceive(chunk);
});
 
function OnReceive(chunk) {
    mCon = true;
}

login();

---

记录console.log时如何让mCon值为真？

我想在收到套接字结果后继续代码。

Answer 1

试试这个希望对你有帮助

mCon = false;

async function login()  {
var sCmd = "...";
mCon = false;
await SendCmdSocket(sCmd);

console.log("### mCon : " + mCon); <-- Here
}

async function SendCmdSocket(sCmd)  {
    return new Promise((resolve, reject) => {
      socket.write(sCmd)
     if(mCon){
       resolve()
      }
    })
 }

socket.on('data', function(chunk) {
OnReceive(chunk);
});

function OnReceive(chunk) {
mCon = true;
}

login();