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Salesforce JS-Dev-101 Exam Syllabus Topics:

Section	Objectives
Salesforce Platform Integration	- Lightning Web Components (LWC) Basics - Working with Salesforce Data Models
Asynchronous Programming	- API Calls and Data Fetching - Callbacks, Promises, and Async/Await
Browser and DOM Interaction	- DOM Manipulation - Events and Event Handling
Object-Oriented JavaScript	- Classes and Inheritance - Objects and Prototypes
JavaScript Fundamentals	- Functions and Scope - Variables, Data Types, and Operators - Control Flow and Error Handling

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Salesforce Certified JavaScript Developer - Multiple Choice Sample Questions (Q46-Q51):

NEW QUESTION # 46
for (let number = 2; number <= 5; number += 1) {
// faster code statement here
}
Which statement meets the requirements to log an error when the Boolean statement evaluates to false?

A. console.assert(number + 2 === 0);
B. console.classy(number + 2 === 0);
C. assert(number + 2 === 0);
D. console.error(number + 2 === 0);

Answer: A

Explanation:
console.assert(condition, message?) logs an assertion error if condition is falsy.
To log an error when number + 2 === 0 is false, use:
console.assert(number + 2 === 0);
Other options are invalid or do not behave as described: console.error always logs, assert alone is not a built-in browser global, and console.classy doesn't exist.
________________________________________

NEW QUESTION # 47
Refer to HTML below:
<p> The current status of an Order: <span id ="status"> In Progress </span></p>.
Which JavaScript statement changes thetext 'In Progress' to 'Completed' ?

A. document.getElementById("status").Value = 'Completed' ;
B. document.getElementById("#status").innerHTML = 'Completed' ;
C. document.getElementById(".status").innerHTML = 'Completed' ;
D. document.getElementById("status").innerHTML = 'Completed' ;

Answer: D

NEW QUESTION # 48
01 function Monster() { this.name = 'hello'; };
02 const m = Monster();
What happens due to the missing new keyword?

A. window.name is assigned to 'hello' and the variable m remains undefined.
B. The m variable is assigned the correct object.
C. The m variable is assigned the correct object but this.name remains undefined.
D. window.m is assigned the correct object.

Answer: A

Explanation:
________________________________________
Comprehensive and Detailed Explanation From Exact Extract JavaScript Knowledge In JavaScript, when calling a constructor function without new:
const m = Monster();
the following happens:
The function executes as a normal function, not as a constructor.
Inside a regular function (in non-strict mode), this refers to the global object:
In a browser: window
So the line:
this.name = 'hello';
becomes:
window.name = 'hello';
Since Monster() does not return anything, its return value is undefined:
const m = undefined;
Therefore:
m is undefined
window.name becomes "hello"
This matches option B.
________________________________________
JavaScript Knowledge Reference (text-only)
Calling a function without new uses the global object as this in non-strict mode.
Constructor functions must use new to create a new object.
Functions without an explicit return return undefined.

NEW QUESTION # 49
Considering the implications of 'use strict' on line 04, which three statements describe the execution of the code?
Choose 3 answers

A. z is equal to 3.14.
B. 'use strict' is hoisted, so it has an effect on all lines.
C. 'use strict' has an effect only on line 05.
D. Line 05 throws an error.
E. 'use strict' has an effect between line 04 and the end of the file.

Answer: A,C,D

NEW QUESTION # 50
Refer to the code below:
console.log(''start);
Promise.resolve('Success') .then(function(value){
console.log('Success');
});
console.log('End');
What is the output after the code executes successfully?

A. EndStartSuccess
B. StartSuccessEnd
C. SuccessStartEnd
D. StartEndSuccess

Answer: D

NEW QUESTION # 51
......

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