Consider the following javascript program, and predict the output if executed. new Promise((arg1, arg2) => { if (5 === "5") arg1(5) else arg2(5) }). then(d => { console.log("Checkpoint 3", d); throw new Error(20); return d 5; }) .then(d => { console.log("Checkpoint 1", d); return d; }) .catch(e => { console.log("Checkpoint 4", e+6); return e 5; }).finally(d => { console.log("Checkpoint 6", d); return d 5; }).then(d => { console.log("Checkpoint 2", d); return d 5; })

(A) Checkpoint 4 11\ Checkpoint 6 undefined\ Checkpoint 2 25

(B) Checkpoint 4 11\ Checkpoint 6 25\ Checkpoint 2 125

(C) Checkpoint 3 5\ Checkpoint 4 Error\ Checkpoint 6 undefined\ Checkpoint 2 NaN

(D) Checkpoint 3 5\ Checkpoint 4 Error\ Checkpoint 6 NaN\ Checkpoint 2 NaN

Modern Application Development II · End Term · 11 Dec 2022 · September 2022 term · Set ETD1-2

Question 16: Consider the following javascript program, and predict t…

Question 16

+4.5 marksOne correct option

Consider the following javascript program, and predict the output if executed.

javascript

1new Promise((arg1, arg2) => {
2    if (5 === "5") arg1(5)
3    else arg2(5)
4}).
5then(d => {
6    console.log("Checkpoint 3", d);
7    throw new Error(20);
8    return d * 5;
9})
10.then(d => {
11    console.log("Checkpoint 1", d);
12    return d;
13})
14.catch(e => {
15    console.log("Checkpoint 4", e+6);
16    return e * 5;
17}).finally(d => {
18    console.log("Checkpoint 6", d);
19    return d * 5;
20}).then(d => {
21    console.log("Checkpoint 2", d);
22    return d * 5;
23})

A
Checkpoint 4 11
Checkpoint 6 undefined
Checkpoint 2 25
B
Checkpoint 4 11
Checkpoint 6 25
Checkpoint 2 125
C
Checkpoint 3 5
Checkpoint 4 Error
Checkpoint 6 undefined
Checkpoint 2 NaN
D
Checkpoint 3 5
Checkpoint 4 Error
Checkpoint 6 NaN
Checkpoint 2 NaN

Show answer

Correct answer

A
Checkpoint 4 11
Checkpoint 6 undefined
Checkpoint 2 25

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Question 16 of 32 in the IIT Madras BS Modern Application Development II (MAD 2) End Term paper sat on 11 Dec 2022, in the September 2022 term (IIT M DIPLOMA AN1 EXAM ETD1 11 Dec 2022). It carries 4.5 marks.

Question 16: Consider the following javascript program, and predict t…

Question 16

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