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Variables#11
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8 changes: 4 additions & 4 deletions1-js/02-first-steps/04-variables/1-hello-variables/solution.md
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W kodzie poniżej, każda linia odpowiada podpunktowi w liście zadań. | ||
```js run | ||
let admin, name; //można zadeklarować dwie zmienne jednocześnie | ||
name = "Jan"; | ||
admin = name; | ||
alert( admin ); // "Jan" | ||
``` | ||
10 changes: 5 additions & 5 deletions1-js/02-first-steps/04-variables/1-hello-variables/task.md
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18 changes: 9 additions & 9 deletions1-js/02-first-steps/04-variables/2-declare-variables/solution.md
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Najpierw zmienna dla nazwy naszej planety. | ||
To proste: | ||
```js | ||
let ourPlanetName = "Ziemia"; | ||
``` | ||
Zauważ, że mogliśmy użyć krótszej nazwy`planet`,ale nie jest oczywiste do jakiej planety się odnosimy. Dobrze jest być konkretnym. Przynajmniej dopóki nazwa nie jest za długa. | ||
Teraz nazwa obecnego odwiedzającego: | ||
```js | ||
let currentUserName = "Jan"; | ||
``` | ||
Znowu mogliśmy skrócić nazwę do`userName`jeśli jesteśmy pewni, że dany użytkownik jest użytkownikiem bieżącym. | ||
Współczesne edytory i autouzupełnianie ułatwiają pisanie długich nazw zmiennych. Nie oszczędzaj na nich. Nazwa składająca się z 3 wyrazów jest w porządku. | ||
Jeśli Twój edytor nie ma odpowiedniego autouzupełniania, [spraw sobie nowy](/code-editors). |
6 changes: 3 additions & 3 deletions1-js/02-first-steps/04-variables/2-declare-variables/task.md
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6 changes: 3 additions & 3 deletions1-js/02-first-steps/04-variables/3-uppercast-constant/solution.md
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Zazwyczaj używamy wielkich liter dla stałych, które są "zakodowane na stałe". Lub, innymi słowy, gdy wartość jest znana przed wykonaniem i bezpośrednio zapisana w kodzie. | ||
W tym kodzie `birthday`jest dokładnie takim przypadkiem. Możemy więc użyć wielkich liter. | ||
W przeciwieństwie do tego, `age`jest obliczane w czasie wykonywania. Dzisiaj mamy jeden wiek a za rok będziemy mieli kolejny. Jest to stała w tym sensie, że nie zmienia się w trakcie wykonanie kodu, ale jest trochę "mniej stała" niż `birthday`. Jest to wartość obliczana, więc powinniśmy pozostać przy małych literach. |
12 changes: 6 additions & 6 deletions1-js/02-first-steps/04-variables/3-uppercast-constant/task.md
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