2021 Latest 100% Exam Passing Ratio - JavaScript-Developer-I Dumps PDF

Pass Exam With Full Sureness - JavaScript-Developer-I Dumps with 160 Questions

How to Study the Salesforce JavaScript-Developer-I Exam

The best study material one can get is the JavaScript-Developer-I practice dumps. To ensure good grades, do attempt the JavaScript-Developer-I practice tests. The JavaScript Developer I from Salesforce typically has 1-2 years of experience as a JavaScript developer with the following JavaScript topics.

• Scope of Variables

• Modules

• Monitor (agnostic platform)

• Activities

• Conversion type (inclusive versus explicit)

• Forms of data and operators

• JavaScript on the backend

• Item Model Document

• Strings

• Control of Mistake

• Classes

• Functions (more functions in higher order)

• Asynchronous Programming

• Discharge

• Objects & Arrays: Data Structures

To prepare for this test, we advise a combination of practical experience, completion of training courses, pathways and self-study in the areas listed in the examination outline section of this examination guide.

Difficulty in Writing of Salesforce JavaScript-Developer-I Exam

As Javascript development observed in nearly all organizations, Salesforce JavaScript-Developer-I is the most successful qualification candidates can get on their resume. Professionals have therefore been known to demonstrate concern. But this JavaScript-Developer-I can be very easy to clear if practitioners study with JavaScript-Developer-I exam dumps and then take the JavaScript-Developer-I practice exams. However, with accurate focusing and proper planning content, candidates will clear the test. With the aid of these materials, aspirants get reasonable idea about the kind of questions they pose in actual certification, the certification questions provides the most-represented JavaScript-Developer-I practice tests. The Salesforce experts check TestSimulate JavaScript-Developer-I dumps. Certification questions also include a test for practise and is an ideal forum for checking the information achieved.

 

NEW QUESTION 54
Refer to the following code that imports a module named Utills,
Which two implementations of Utill, je export foo and bar such that the code above runs without error?
Choose 2 answers

• A. //FooUtill.js and barUtils, js exist
  Import (foo) from ,/Path/footUtils.js,:
  Export (foo, bar)
• B. Const foo = ( ) => ( return 'foo; ; )
  Const bar => => { return 'bar ';}
  Export default foo, bar;
• C. Const foo = () => ( return 'foo ' ; )
  Const bar => ( return 'bar' ; )
  Export (foo, bar)
• D. Export default class (
  Foo ( ) ( return 'foo ,; )
  Bar ( ) ( return ;bar ; )

Answer: D

 

NEW QUESTION 55
Universal Containers recently launched its new landing page to host a crowd-funding campaign. The page uses an external library to display some third-party ads. Once the page is fully loaded, it creates more than 50 new HTML items placed randomly inside the DOM, like the one in the code below:

All the elements includes the same ad-library-item class, They are hidden by default, and they are randomly displayed while the user navigates through the page.

• A. Use the browser to execute a script that removes all the element containing the class ad-library-item.
• B. Use the DOM inspector to remove all the elements containing the class ad-library-item.
• C. Use the browser console to execute a script that prevents the load event to be fired.
• D. Use the DOM inspector to prevent the load event to be fired.

Answer: A

 

NEW QUESTION 56
Refer to the following array:
Let arr1 = [1, 2, 3, 4, 5];
Which two lines of codes result in a second array, arr2, being created such that arr2 is not a reference to arr1? Choose 2 answers

• A. Let arr2 = arr1 .slice (0, 5);
• B. Let arr2 = arr1 sort ();
• C. Let arr2 = Array. From (arr1) ;
• D. Let arr2 = arr1;

Answer: B,D

 

NEW QUESTION 57
Refer to the code below:

When does promise. Finally on line 08 get called?

• A. When rejected
• B. When resolved and settled
• C. When resolved
• D. When resolved or rejected

Answer: D

 

NEW QUESTION 58
Given a value, which three options can a developer use to detect of the value is NaN?
Choose 3 answers

• A. Value == NaN
• B. Value I== value
• C. Value == Number, NaN
• D. Number , isNaN(value)
• E. Object , is ( value, NaN)

Answer: A,D,E

 

NEW QUESTION 59
A developer publishes a new version of a package with new feature that do not break backward compatibility. The previous version number was 1.1.3.
Following semantic versioning format, what should the new package version number be?

• A. 1.2.3
• B. 1.2.0
• C. 1.1.4
• D. 2.0.0

Answer: B

 

NEW QUESTION 60
Refer to the code below:
What is the output after the code executes?

• A. ReferenceError: assignment to undeclared variable ''Person''
• B. Developer
• C. undefined
• D. ReferenceError: eyeColor is not defined

Answer: C

 

NEW QUESTION 61
A developer has code that calculates a restaurant bill, but generates incorrect answers while testing the code.

Which option allows the developer to step into each function execution within calculateBill?

• A. Calling the console. Trace( total ) method on line 03.
• B. Using the debugger command on line 03.
• C. Using the debugger command on line 05.
• D. Wrapping findsubtotal in a console .log method.

Answer: B

 

NEW QUESTION 62
Refer to the code below:
let productSKU = '8675309,;
A developer has a requirement to generate SKU numbers that are always 10 characters log, starting with 'sku', and padded with zeros.
Which statement assigned the value skuooooooooo86675309?

• A. productSKU = productSKU. PadEnd (16, '0' padstart ('sku') ;
• B. productSKU = productSKU. Padstart (16, '0' padstart (19, 'sku') ;
• C. productSKU = productSKU. PadEnd (16, '0' padstart (19, 'sku') ;
• D. productSKU = productSKU. Padstart (19, '0' padstart ('sku') ;

Answer: B

 

NEW QUESTION 63
Refer to the code below:

After running this code, which result is displayed on the console?

• A. > True
  > False
• B. > 5
  > Undefined
• C. > 5
  > 0
• D. > 5
  >- 1

Answer: D

 

NEW QUESTION 64
Refer to the code below:

What is result of the code block?

• A. The console logs only 'flag',
• B. The console logs 'flag' and another flag',
• C. The console logs flag' and then an error is thrown.
• D. An error is thrown.

Answer: C

 

NEW QUESTION 65
Considering type coercion, What does the following expression evaluate to?
True + '13 ' + NaN

• A. 'true13'
• B. 113NaN
• C. 'true13NaN'
• D. 0

Answer: B

 

NEW QUESTION 66
A developer wants to use a try...catch statement to catch any error that countSheep () may throw and pass it to a handleError () function.
What is the correct implementation of the try...catch?
A)

B)

C)

D)

• A. Option
• B. Option
• C. Option
• D. Option

Answer: B

 

NEW QUESTION 67
Refer to the code below:

Which two statements correctly execute the runparallel () function?
Choose 2 answers

• A. Async runParalled (). Then (data) :
• B. runParralel () . then (data );
• C. runParallel () , then (function ) (date) { } 0;
• D. runParallel () , done (function ( data)(return data; }};

Answer: A,C

 

NEW QUESTION 68
What are two unique feature of function defined with a fat arror as compared to normal functional definition?
Choose 2 answers

• A. The function uses the this from the enclosing scope.
• B. The function generation its own this making it useful for separating the function's scope its enclosing scope
• C. The function receives an argument that is always in scope, called parent this, which is the enclosing lexical scope
• D. If the function has a single expression in the function body, the expression will be evaluated and implicitly returned.

Answer: D

 

NEW QUESTION 69
Which statement parses successfully?

• A. JSON. parse (""foo"');
• B. JSON.parse ("foo");
• C. JSON.parse ("foo");
• D. JSON.parse (""foo'");

Answer: A

 

NEW QUESTION 70
Refer to the code below:

What is the value result after line 10 executes?

• A. John undefined
• B. John Developer
• C. Undefined Developer
• D. Error: myfather.job is not a function

Answer: D

 

NEW QUESTION 71
A developer wants to define a function log to be used a few times on a single-file JavaScript script.
01 // Line 1 replacement
02 console.log('"LOG:', logInput);
03 }
Which two options can correctly replace line 01 and declare the function for use?
Choose 2 answers

• A. function log = (logInput) {
• B. const log(loginInput) {
• C. function leg(logInput) {
• D. const log = (logInput) => {

Answer: C,D

 

NEW QUESTION 72
Refer to the code below:

A developer uses a client that makes a GET request that uses a promise to handle the request, getRequest returns a promise.
Which code modification can the developer make to gracefully handle an error?
A)

B)

C)

D)

• A. Option C
• B. Option A
• C. Option B
• D. Option D

Answer: B

 

NEW QUESTION 73
Given the following code:

Which replacement for the conditional statement on line 02 allows a developer to correctly determine that a button on the page is clicked?

• A. button.addEventListener ( 'click')
• B. Event,target.nodename == 'BUTTON"
• C. o.nodeTarget == this
• D. Event, clicked

Answer: B

 

NEW QUESTION 74
Which option is true about the strict mode in imported modules?

• A. Add the statement use non-strict; before any other statement in the module to enable not strict mode.
• B. Add the statement use strict = false, before any other statements In the module to enable not-strict mode.
• C. Imported modules are in strict model whether you declare them as such or not.
• D. You can only reference notStrict () functions from the imported module.

Answer: D

 

NEW QUESTION 75
Refer to the code snippet below:
Let array = [1, 2, 3, 4, 4, 5, 4, 4];
For (let i =0; i < array.length; i++)
if (array[i] === 4) {
array.splice(i, 1);
}
}
What is the value of array after the code executes?

• A. [1, 2, 3, 4, 5, 4]
• B. [1, 2, 3, 4, 5, 4, 4]
• C. [1, 2, 3, 5]
• D. [1, 2, 3, 4, 4, 5, 4]

Answer: D

 

NEW QUESTION 76
Refer to the code below:
Const searchTest = 'Yay! Salesforce is amazing!" ;
Let result1 = searchText.search(/sales/i);
Let result 21 = searchText.search(/sales/i);
console.log(result1);
console.log(result2);
After running this code, which result is displayed on the console?

• A. > 5 > 0
• B. > 5 >undefined
• C. > 5 > -1
• D. > true > false

Answer: B

 

NEW QUESTION 77
Refer to the following code:

Which two statements could be inserted at line 17 to enable the function call on line 18?
Choose 2 answers

• A. 1eo.roar = () => 9 (console.log('They\'re pretty good1'); 1;
• B. Object.assign, assign( 1eo, trigger);
• C. 1eo.prototype.roar = ( ) => ( console.log (They\'re pretty good1'); );
• D. Object,assign(1eo, tony) ;

Answer: A,D

 

NEW QUESTION 78
Given the following code:

is the output of line 02?

• A. ''x''
• B. ''object''
• C. ''null'''
• D. ''undefined''

Answer: B

 

NEW QUESTION 79
......

For more info read reference:

Salesforce JavaScript-Developer-I Certification leaning site Salesforce JavaScript-Developer-Is Certification resources

 

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