Practice Examples and Dumps & Tips for 2022 Latest JavaScript-Developer-I Valid Tests Dumps
Latest [Jan 20, 2022] 100% Passing Guarantee - Brilliant JavaScript-Developer-I Exam Questions PDF
NEW QUESTION 12
Refer to the code below:
Which two statements correctly execute the runparallel () function?
Choose 2 answers
- A. runParralel () . then (data );
- B. Async runParalled (). Then (data) :
- C. runParallel () , then (function ) (date) { } 0;
- D. runParallel () , done (function ( data)(return data; }};
Answer: B,C
NEW QUESTION 13
Refer to the code below:
Let inArray - [ [1, 2] , [3, 4, 5] ];
Which two statements result in the array [1, 2, 3, 4, 5 ]?
- A. [ ] . concat. Apply (inArray, [ ] );
- B. [ ]. Concat ( [...InArray] );
- C. [ ] . concat. Apply ( [ ], inArray) ;
- D. [ ] . concat. ( ... inArray) ;
Answer: B,C
NEW QUESTION 14
Which three actions can be done using the JavaSript browser console?
Choose 3 answer
- A. View and change security cookies
- B. Run code a that is not related to the page.
- C. Display a report showing the performance of a page.
- D. View, change, and debug the JavaScript code of the page.
- E. View and change the DOM of the page.
Answer: B,D,E
NEW QUESTION 15
Refer to the HTML below:
<p> The current status of an order: < span> id='' status '> In progress < /span> < /p> Which JavaScript Statement changes the text 'In Progress' to Completed'?
- A. Document, getElementById ('',status''), innerHTML = 'Completed' ;
- B. Document, getElementById (''status''), innerHTML = 'Completed' ;
- C. Document, getElementById (''# status''), innerHTML = 'Completed' ;
- D. Document, getElementById (status'') , value = completed' ;
Answer: B
NEW QUESTION 16
Which JavaScript method can be used to serialize an object into a string and deserialize a JSON string into an object, respectively?
- A. JSON.Stringify and JSON.parse
- B. JSON,serialize and JSON,desrialize
- C. JSON.encode and JSON decode
- D. JSON.parse and JSON deserialize
Answer: B
NEW QUESTION 17
A developer has two ways to write a function:
After deciding on an option, the developer creates 1000 monster objects.
How many growl methods are created with Option A and Option B?
- A. 1 growl method is created regardless of which option is used.
- B. 1000 growl methods are created for Option A. 1 growl method is created for Option B.
- C. 1 growl method is created for Option A. 1000 growl methods are created for Option B.
- D. 1000 growl methods are created regardless of which option is used.
Answer: B
NEW QUESTION 18
Which three statements are true about promises?
The executor of a new promise runs automatically.
- A. A settled promises can become resolved.
- B. A pending promise can become fulfilled, settled or rejected.
- C. A fulfilled or rejected promise will not change states.
- D. A promise has a . then 90 method.
Answer: A,C,D
NEW QUESTION 19
A developer creates a generic function to log custom messages In the console. To do this, the function below is implemented.
Which three console logging methods allow the use of string substitution in line 02?
Choose 3 answers
- A. error
- B. Message
- C. Assert
- D. Info
- E. Log
Answer: A,B,C
NEW QUESTION 20
A developer is working on an ecommerce website where the delivery date is dynamically calculated based on the current dat. The code line below is responsible for this calculation.
Const deliveryDate = new Date ( );
Due to changes in the business requirements, the delivery date must now be today's date + 9 days.
Which code meets this new requirements?
- A. deliveryDate. setDate (( new Date ()) .getDate () + 9);
- B. deliveryDate. setDate ( Date . current () + 9 0;
- C. deliveryDate. Date = new Date (+9) ;
- D. deliveryDate . date = date . current () + 9
Answer: A
NEW QUESTION 21
A developer has a server running with Node.js. the command to start the web server is node server.js. the server started having latency issues. Instead of a one second turnaround 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_DEBUO=true node server,js
- B. DEBUO=http, https node server,js
- C. DEBUO=true node server,js
- D. NODE_DEBUO=http, https node server,js
Answer: B
NEW QUESTION 22
Teams at Universal Containers (CU) work on multiple JavaScript projects at the same time. UC us 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 register are not supported by npm, but packages can be installed via git.
- B. Private packages are not supported, but they can use another package manager like yarm.
- C. Private registries are not supported by spm, but packages can be installed vis URL.
- D. Private packages can be scoped, and scopes can be associated to a private registries.
Answer: B
NEW QUESTION 23
Refer to the following array:
Let arr1 = [ 1, 2, 3, 4, 5 ];
Which two lines of code result in a second array, arr2 being created such that arr2 is not a reference to arr1?
- A. Let arr2 = arr1.sort();
- B. Let arr2 = arr1;
- C. Let arr2 = Array.from(arr1);
- D. Let arr2 = arr1.slice(0, 5);
Answer: C,D
NEW QUESTION 24
A developer is required to write a function that calculates the sum of elements in an array but is getting undefined every time the code is executed. The developer needs to find what is missing in the code below.
Which option makes the code work as expected?
- A. Replace line 05 with return results;
- B. Replace line 02 with return arr. map ( (result, current => (
- C. Replace line 03 with if 9 (arr. Length == 0) ( return 0; )
- D. Replace line 04 with result + current ;
Answer: A
NEW QUESTION 25
Which two console logs out NaN?
Choose 2 answers
- A. Console.log(10 / 'five' ') ;
- B. Console.log(10 / Number ('5) );
- C. Console.log (10 / 0);
- D. Console.log(parseint ('two') ) ;
Answer: A,D
NEW QUESTION 26
The developer has a function that prints ''Hello'' to an input name. To test this, the developer created a function that returns world''.
What can the developer do to change the code to print ''Hello world''?
- A. Change line 9 to sayhello (world () ;
- B. Change line 7 to ) () ;
- C. Change line 5 to function world () (
- D. Change line 2 to console.log ( 'Hello', name () );
Answer: B
NEW QUESTION 27
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