Salesforce Exam Javascript-Developer-I Topic 5 Question 11 Discussion

Actual exam question for Salesforce's Salesforce Certified JavaScript Developer I exam

Question #: 11
Topic #: 5

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?

Aws.connect (( ) => {
console.log('connected to client'); }).catch((error) => { console.log('ERROR' , error); }};

Bws.on ('connect', ( ) => {
console.log('connected to client'); ws.on('error', (error) => { console.log('ERROR' , error); });
});

Cws.on ('connect', ( ) => { console.log('connected to client'); }}; ws.on('error', (error) => { console.log('ERROR' , error); }};

Dtry{
ws.connect (( ) => {
console.log('connected to client'); });
} catch(error) { console.log('ERROR' , error); };
}

Show Suggested Answer

Suggested Answer: C

by Nelida at May 05, 2022, 07:58 PM

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