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A developer is setting up a new Node.js server with a client library that is built using events and callbacks.
The library:
Will establish a web socket connection and handle receipt of messages to the server
Will be imported with require, and made available with a variable called we.
The developer also wants to add error logging if a connection fails.
Given this info, which code segment shows the correct way to set up a client with two events that listen at execution time?
- A . ws.connect (( ) => {
console.log(‘connected to client’); }).catch((error) => { console.log(‘ERROR’, error); }};
B. ws.on (‘connect’, ( ) => {
console.log(‘connected to client’); ws.on(‘error’, (error) => { console.log(‘ERROR’, error); });
});
C. ws.on (‘connect’, ( ) => { console.log(‘connected to client’); }}; ws.on(‘error’, (error) =>
{ console.log(‘ERROR’, error); }};
C. try{
ws.connect (( ) => { console.log(‘connected to client’); });
} catch(error) { console.log(‘ERROR’, error); };
}
Suggested Answer: C
Posted : 13/02/2023 10:50 pm