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JavaScript-Developer-I Exam Torrent & JavaScript-Developer-I Test Collection & JavaScript-Developer-I Top Quiz

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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q220-Q225):

NEW QUESTION # 220
A developer wants to use a module named universalContainersLib andthen call functions from it.
How should a developer import every function from the module and then call the functions foo and bar?

A. import all from
'/path/universalContainersLib.js';universalContainersLib.foo();universalContainersLib.bar ();
B. import * from '/path/universalContainersLib.js';universalContainersLib. foo ()7universalContainersLib.bar ();
C. import * as lib from '/path/universalContainersLib.js';lib.foo();lib. bar ();
D. import{foo,bar} from '/path/universalCcontainersLib.js';foo():bar()?

Answer: C

NEW QUESTION # 221
Which code change should be done for the console to log the following when 'Click me!' is clicked'
> Row log
> Table log

A. Change line 14 to elem.addEventListener ('click', printMessage, true);
B. Remove lines 13 and 14
C. Change line 10 to event.stopPropagation (false) ;
D. Remove line 10

Answer: C

NEW QUESTION # 222
A developer needs to test this function:
01 const sum3 = (arr) => (
02 if (!arr.length) return 0,
03 if (arr.length === 1) return arr[0],
04 if (arr.length === 2) return arr[0] + arr[1],
05 return arr[0] + arr[1] + arr[2],
06 );
Which two assert statements are valid tests for the function?
Choose 2 answers

A. console.assert(sum3(0)) == 0);
B. console.assert(sum3(1, '2')) == 12);
C. console.assert(sum3(-3, 2 )) == -1);
D. console.assert(sum3('hello', 2, 3, 4)) === NaN);

Answer: B,C

NEW QUESTION # 223
Refer to the code below:

Which value can a developer expect when referencing country,capital,cityString?

A. 'NaN'
B. An error
C. undefined
D. 'London'

Answer: A

NEW QUESTION # 224
A developer implements and calls the following code when an application state change occurs:

If the back button is clicked after this method is executed, what can a developer expect?

A. A navigate event is fired with a state properly that details previous application state.
B. The page is navigated away from and previous page in the browser's history is loaded.
C. A popstate event is fired with a state properly that details the application's last state.
D. The page reloads and all JavaScript is reinitialized.

Answer: B

NEW QUESTION # 225
......

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Walt Scott Walt Scott

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