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PracticeReal-life: map() prices into UI labels
PRACTICE · 03 · 練

Real-life: map() prices into UI labels

Prices come in cents. With map, turn 1200 and 2500 into the strings $12 and $25.

  1. Solve the task in the editor — no long theory.
  2. Run the check and compare your output with the expected result.
  3. Stuck? Open the solution and carry the approach into your own code.
Solution spoiler · click to reveal
const { from, map } = Rx;

const cents = [1200, 2500];

const result$ = from(cents).pipe(
  map(value => '$' + value / 100)
);

result$.subscribe(value => console.log(value));
script.ts // TypeScript
CONSOLE · Console output
Hit Run to see the result...