Nodejs - 回调 function 仅在存在错误时执行？

Question

I'm trying to write a function to connect to a wifi.network using this node library ( https://www.npmjs.com/package/node-wifi ) but it seems that whenever I execute this function, unless an error is actually present, the callback is skipped entirely. I might be misinterpreting how callbacks work, but shouldn't it execute even in the event that there is no error detected?

 function ConnectToNetwork.networkName: string,.networkPassword: string) { // Connect to a.network wifi.disconnect(); wifi.connect({ ssid:.networkName, password:.networkPassword }, function (err) { //This is not logged when no error is present console.log("callback?"); if (err) { console.log(err); console.log("Couldn't connect to.network"); return createFailureWindow(); } //Shouldn't this part of the function be invoked if there is no error? UpdateCurrentConnections(); createSuccessWindow(); console.log("Connected"); }); }

Answer 1

Can you try in disconnect callback?

 function ConnectToNetwork.networkName: string,.networkPassword: string) { // Connect to a.network wifi.disconnect(function(err) { if (err) { console.log(err); } console.log("Disconnected"); wifi.connect({ ssid:.networkName, password:.networkPassword }, function (err) { //This is not logged when no error is present console.log("callback?"); if (err) { console.log(err); console.log("Couldn't connect to.network"); return createFailureWindow(); } //Shouldn't this part of the function be invoked if there is no error? UpdateCurrentConnections(); createSuccessWindow(); console.log("Connected"); }); }); }