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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q13-Q18):

NEW QUESTION # 13
Refer to the code below:

What value can a developer expect when referencing o,js,secondCity?

A. 'New York
B. Undefined
C. 'new york'
D. An error

Answer: C

NEW QUESTION # 14
developer creates a new web server that uses Node.js. It imports a server library that uses events and callbacks for handling server functionality.
The server library is imported with require and is made available to the code by a variable named server. The developer wants to log any issues that the server has while booting up.
Given the code and the information the developer has, which code logs an error at boost with an event?

A. Server.on ('error', (error) => {
console.log('ERROR', error);
});
B. Try{
server.start();
} catch(error) {
console.log('ERROR', error);
}
C. Server.catch ((server) => {
console.log('ERROR', error);
});
D. Server.error ((server) => {
console.log('ERROR', error);
});

Answer: A

NEW QUESTION # 15
Consider type coercion, what does the following expression evaluate to?
True + 3 + '100' + null

A. 0
B. '3100null'
C. 1
D. '4100null'

Answer: D

NEW QUESTION # 16
Refer to the following code:

Which statement should be added to line 09 for the code to display. The truck 123AB has a weight of 5000 Ib. '?