setImmediate vs process.nextTick in Node.js - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to schedule a callback to run after the current operation using process.nextTick.

Node.js

process.[1](() => {
  console.log('Runs before setImmediate');
});

Drag options to blanks, or click blank then click option'

Aimmediate

BnextTick

Ctimeout

DsetImmediate

Attempts:

3 left

💡 Hint

Common Mistakes

Using setImmediate instead of nextTick here causes the callback to run later.

Misspelling the method name.

process.nextTick schedules a callback to run immediately after the current operation, before any I/O events or timers.

2fill in blank

medium

Complete the code to schedule a callback that runs after I/O events using setImmediate.

Node.js

set[1](() => {
  console.log('Runs after I/O events');
});

Drag options to blanks, or click blank then click option'

AImmediate

BTimeout

CTick

DInterval

Attempts:

3 left

💡 Hint

Common Mistakes

Using setTimeout or setInterval instead of setImmediate.

Confusing setImmediate with process.nextTick.

setImmediate schedules a callback to run after I/O events in the event loop.

3fill in blank

hard

Fix the error in the code to correctly schedule a callback with process.nextTick.

Node.js

process.nextTick(() => {
  console.log('First');
});
process.[1](() => {
  console.log('Second');
});

Drag options to blanks, or click blank then click option'

AtickNext

BsetImmediate

CnextTick

DsetTimeout

Attempts:

3 left

💡 Hint

Common Mistakes

Using a non-existent method like 'tickNext'.

Confusing setImmediate with nextTick.

The method process.nextTick must be called exactly as is. 'tickNext' is invalid.

4fill in blank

hard

Fill both blanks to create a sequence where process.nextTick runs before setImmediate.

Node.js

process.[1](() => {
  console.log('Runs first');
});
[2](() => {
  console.log('Runs second');
});

Drag options to blanks, or click blank then click option'

AnextTick

BsetTimeout

CsetImmediate

DtickNext

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the order of nextTick and setImmediate.

Using invalid method names.

process.nextTick callbacks run before setImmediate callbacks in the event loop.

5fill in blank

hard

Fill all three blanks to create a code snippet that logs in this order: 'tick', 'timeout', 'immediate'.

Node.js

process.[1](() => {
  console.log('tick');
});
set[2](() => {
  console.log('timeout');
}, 0);
set[3](() => {
  console.log('immediate');
});

Drag options to blanks, or click blank then click option'

AnextTick

BTimeout

CImmediate

DTick

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the order of setTimeout and setImmediate.

Using lowercase or misspelled method names.

process.nextTick runs first, then setTimeout with 0 delay, then setImmediate.