Online Access Free Salesforce.JavaScript-Developer-I.v2022-05-02.q59 Practice Test (Page 5)

JavaScript-Developer-I Exam Question 16

In which situation should a developer include a try... catch block around their function call?

A.The function might raise a runtime error that needs to be handled.

B.The function results in an out of memory issue.

C.The function contains scheduled code.

D.The function has an error that should not be silenced.

JavaScript-Developer-I Exam Question 17

Refer to the following code:

What is the output of line 11?

A.["foo:1", "bar:2"]

B.["bar", "foo"]

C.["foo", "bar"]

D.[1,2]

JavaScript-Developer-I Exam Question 18

developer has a web server running with Node.js. The command to start the web server is node server,js. The web server started having latency issues. Instead of a one second turn around for web requests, the developer now sees a five second turnaround, Which command can the web developer run to see what the module is doing during the latency period?

A.NODE_DEBUG =http, https node server.js

B.DEBUG = http, https node server.js

C.NODE_DEBUG =true node server.js

D.DEBUG =true node server.js

JavaScript-Developer-I Exam Question 19

Teams at Universal Containers (UC) work on multiple JavaScript projects at the same time.
UC is thinking about reusability and how each team can benefit from the work of others.
Going open-source or public is not an option at this time.
Which option is available to UC with npm?

A.Private registries are not supported by npm, but packages can be installed via URL.

B.Private packages can be scored, and scopes can be associated to a private registries.

C.Private packages are not supported, but they can use another package manager like yarn.

D.Private registries are not supported by npm, but packages can be installed via git.

JavaScript-Developer-I Exam Question 20

Refer to the HTML below:
<div id="main">
<ul>
<li>Leo</li>
<li>Tony</li>
<li>Tiger</li>
</ul>
</div>
Which JavaScript statement results in changing " Tony" to "Mr. T."?

A.document.querySelector('$main li:second-child').innerHTML = ' Mr. T. ';

B.document.querySelector('$main li:nth-child(2)'),innerHTML = ' Mr. T. ';

C.document.querySelector('$main li.Tony').innerHTML = ' Mr. T. ';

D.document.querySelectorAll('$main $TONY').innerHTML = ' Mr. T. ';

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