Online Access Free JavaScript-Developer-I Exam Questions

No.# slice() and Array.from() → create copies (new memory).

sort() and direct assignment → share the same reference.

A and B is correct answer.

No.# try {
handleObjectValue(x);
getNextValue();
} catch (error) {
handleError(error);
}

Correct answer is not given in above question

No.# B option is right : console.table(usersList) ;
console.table() renders arrays/objects as a sortable table in DevTools. You can click the “name” or “email” column headers to sort visually.

console.group(usersList) just creates a collapsible log group label; it does not render rows/columns or enable sorting.

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No.# C is right answer

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No.# https://www.exam4training.com/which-two-statements-could-be-inserted-at-line-17-to-enable-the-function-call-on-line-18/

No.# A is correct

No.# 10 - 10 is the correct answer.

Here’s what happens step by step:

1. a is assigned the value 10.
2. b is assigned the value of a, which is 10.
3. changeValue(b); is called, passing the value of b, which is 10, to the changeValue function.
4. Inside changeValue, param is assigned the value 3, but this does not affect the value of b outside the function.
5. const result = a + ' - ' + b; assigns the string '10 - 10' to result.
6. console.log(result) prints '10 - 10'.

So, the final output will be:

10 - 10

No.# It's A, C
"arrow functions establish 'this' based on the scope the arrow function is defined within"
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions

No.# ABD is correct answer

No.# A is the correct answer

No.# CD are correct

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No.# What an indian idiot you are FDG (Fucking Dog Gouva)

No.# D IS CORRECT