Concept build for a fictional brand. Names, prices and numbers are illustrations.Built by Jefi Studio · See how it works →

A notebook of hand-drawn page layouts and a pen on a chair

A warehouse floor of stored punched cards, 1959

A laptop showing code on a desk at night beside a lamp

Four weeks of JavaScript basics, about 6 hours a week, with a live office hour on Tuesdays. No application and no card.

Free prep, four weeks.

Where should you start?

Five short pieces of real JavaScript and one question about your week. You'll see the answers as you go, and we'll point you to Prep or straight to the immersive.

Nothing is saved or sent.

Question 1 of 6: what does this print?

const scores = [3, 7, 2];
scores.push(5);
console.log(scores.length);

34517

Question 2 of 6: what does this print?

let total = 0;
for (let i = 1; i <= 3; i++) {
  total += i;
}
console.log(total);

346123

Question 3 of 6: what does this print?

const user = { name: "Ana", langs: ["js", "sql"] };
console.log(user.langs[1].toUpperCase());

"JS""SQL""ANA"undefined

Question 4 of 6: what does this print?

const double = (n) => n * 2;
console.log([1, 2, 3].map(double));

[1, 2, 3][2, 4, 6]12[1, 2, 3, 1, 2, 3]

Question 5 of 6: what does this print?

console.log("a");
setTimeout(() => console.log("b"), 0);
console.log("c");

a b ca c bb a ca c

Question 6 of 6: how many hours a week can you give it?

Under 10About 20, around a jobAbout 50, I can stop working

Week one, values.
Variables, strings, numbers, functions. Your first program prints a receipt.
Week two, loops.
Arrays, loops and conditions. You write a grade calculator and break it on purpose.
Week three, objects.
Objects, the DOM and events. A to-do list in the browser, no libraries.
Week four, a mock.
A small project and a 20-minute mock interview with an instructor.

Start on Monday.

Lessons open each Monday at 9 AM Eastern. Office hour: Tuesdays at 7 PM Eastern, on video.

Cost: Free, always
Time: About 6 hours a week
Live help: Tuesdays, 7 PM Eastern

Prep is not a sales funnel with a timer on it. About a third of the people who finish decide a bootcamp isn't for them, and that is a good use of four weeks. Finish the week four project and you skip the warm-up half of the technical interview.

Then

Finish week four's projectskip the warm-up
Mock interview notesyours to keep
Apply for the immersiveany time

Lessonsyours forever
Office hour recordingsfor 4 weeks
Emails from usone a week

Concept build for a fictional brand. Names, prices and numbers are illustrations. Built by Jefi Studio.

Free prep, four weeks.

Where should you start?

Week one, values.

Start on Monday.