Refer to the code below: 01 function myFunction(reassign) { 02 let x = 1; 03 var y = 1; 04 05 if (reassign) { 06 let x = 2; 07 var y = 2; 08 console.log(x); 09 console.log(y); 10 } 11 12 console.log(x); 13 console.log(y); 14 } What is displayed when myFunction(true) is called?
Correct Answer: B
Comprehensive and Detailed Explanation From Exact Extract JavaScript knowledge: This question tests understanding of let (block scope) and var (function scope) in JavaScript. Initial declarations in the function: let x = 1; // line 2 var y = 1; // line 3 Here: x is declared with let, so it is block-scoped to the function body. y is declared with var, so it is function-scoped to the entire function. Inside the if (reassign) block (and since reassign is true, we enter it): if (reassign) { let x = 2; // line 6 var y = 2; // line 7 console.log(x); // line 8 console.log(y); // line 9 } Detailed behavior: let x = 2; on line 6 creates a new block-scoped variable x that exists only inside the if block. It does not change the outer x declared on line 2. var y = 2; on line 7 declares y with var again, but var is function-scoped. This effectively reassigns the same y defined on line 3 for the entire function. After this line, y is 2 everywhere in the function. Now, inside the if block: console.log(x); (line 8) logs the inner block-scoped x, which is 2. console.log(y); (line 9) logs y, which is the function-scoped y that was set to 2. So the first two outputs are: 2 2 After the if block, execution continues: console.log(x); // line 12 console.log(y); // line 13 Outside the if block: The block-scoped let x = 2; no longer exists; it was only visible inside the if block. The outer let x = 1; (line 2) is still in scope and has not been changed. Thus: console.log(x); (line 12) logs the outer x, which is still 1. console.log(y); (line 13) logs y which, due to var y = 2; inside the if, is now 2 for the whole function. Therefore, when myFunction(true) is called, the output in order is: 2 (inner x in if) 2 (function-scoped y after reassignment) 1 (outer x after if) 2 (function-scoped y remains 2) This corresponds to: JavaScript knowledge / study guide reference concepts: let declarations and block scope var declarations and function scope Shadowing of variables with let inside a block Re-declaration and reassignment of var within a function Execution order of statements and console output ________________________________________
Question 107
Refer to thecode below: Const pi = 3.1415326, What is the data type of pi?
Correct Answer: D
Question 108
Refer to the code: Given the code above, which three properties are set pet1? Choose 3 answers:
Correct Answer: C,D,E
Question 109
A developer at Universal Containers is creating their new landing pagebased on HTML, CSS, and JavaScript. The website includes multiple external resources that are loaded when the page is opened. To ensure that visitors have a good experience, a script named personalizeWebsiteContent needs to be executed when the webpage isloaded and there is no need to wait for the resources to be available. Which statement should be used to call personalizeWebsiteContent based on the above business requirement?
Correct Answer: D
Question 110
Given the following code: What is the output of line 02?
