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JavaScript-Developer-I Test Registration & JavaScript-Developer-I Exam Vce Format

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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q54-Q59):

NEW QUESTION # 54
Which option is a core Node,js module?

A. Ios
B. Path
C. locate
D. Memory

Answer: B

NEW QUESTION # 55
A developer at Universal Containers creates a new landing page based on HTML, CSS, and JavaScript TO ensure that visitors have a good experience, a script named personaliseContext needs to be executed when the webpage is fully loaded (HTML content and all related files ), in order to do some custom initialization.
Which statement should be used to call personalizeWebsiteContent based on the above business requirement?

A. window.addEventListener('load',personalizeWebsiteContext);
B. document.addEventListener(''onDOMContextLoaded', personalizeWebsiteContext);
C. Document.addEventListener('''DOMContextLoaded' , personalizeWebsiteContext);
D. window.addEventListener('onload', personalizeWebsiteContext);

Answer: A

NEW QUESTION # 56
Refer to the following code:

What is the output of line 11?

A. [''foo:1'', ''bar:2'']
B. [1, 2]
C. [''bar'' , ''foo'']
D. ['foo'', ''bar'']

Answer: D

NEW QUESTION # 57
There is a new requirement for a developer to implement a currPrice method that will return the current price of the item or sales..

What is the output when executing the code above

A. 50
80
Uncaught Reference Error:this,discount is undefined
72
B. 50
80
50
72
C. 50
80
72
D. 50
Uncaught TypeError: saleItem,desrcription is not a function
50
80

Answer: B

NEW QUESTION # 58
Universal Container(UC) just launched a new landing page, but users complain that the website is slow. A developer found some functions that cause this problem. To verify this, the developer decides to do everything and log the time each of these three suspicious functions consumes.
console.time('Performance');
maybeAHeavyFunction();
thisCouldTakeTooLong();
orMaybeThisOne();
console.endTime('Performance');
Which function can the developer use to obtain the time spent by every one of the three functions?

A. console.timeLog()
B. console.trace()
C. console.timeStamp()
D. console.getTime()

Answer: A

NEW QUESTION # 59
......

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