Movatterモバイル変換

[0]ホーム
URL:

Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly

 Sign up
Appearance settings

Conditional branching: if, '?'#246

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to ourterms of service andprivacy statement. We’ll occasionally send you account related emails.

Already on GitHub?Sign in to your account

Merged
Show file tree
Hide file tree
Changes fromall commits
Commits
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
View file
Open in desktop
Original file line numberDiff line numberDiff line change
@@ -1,12 +1,12 @@
**Yes, it will.**
**Sim, vai.**

Anystring except an empty one (and `"0"`is not empty) becomes`true`in the logical context.
Qualquer "string" exceto uma vazia (e `"0"`não está vazia) se torna`true`no contexto lógico.

We can run and check:
Podemos executar e verificar:

```js run
if ("0") {
alert( 'Hello' );
alert( 'Olá' );
}
```

6 changes: 3 additions & 3 deletions1-js/02-first-steps/10-ifelse/1-if-zero-string/task.md
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -2,13 +2,13 @@ importance: 5

---

# if (astring with zero)
# if (uma “string” com zero)

Will `alert`be shown?
O `alert`será exibido?

```js
if ("0") {
alert( 'Hello' );
alert( 'Olá' );
}
```

View file
Open in desktop
Loading
Sorry, something went wrong.Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -5,12 +5,12 @@
<script>
'use strict';

let value = prompt('What is the "official" name of JavaScript?', '');
let value = prompt('Qual é o nome "oficial" do JavaScript?', '');

if (value == 'ECMAScript') {
alert('Right!');
alert('Correto!');
} else {
alert("You don't know? ECMAScript!");
alert("Você não sabe? ECMAScript!");
}
</script>

Expand Down
6 changes: 3 additions & 3 deletions1-js/02-first-steps/10-ifelse/2-check-standard/task.md
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -2,11 +2,11 @@ importance: 2

---

#The name of JavaScript
#O nome do JavaScript

Using the`if..else` construct, write the code which asks: 'What is the "official" name of JavaScript?'
Usando a construção`if..else`, escreva o código que pergunta: 'Qual é o nome "oficial" do JavaScript?'

If the visitor enters "ECMAScript",then output "Right!",otherwise--output: "You don't know? ECMAScript!"
Se o visitante digitar "ECMAScript",então chame a função `alert` passando como valor: "Correto!",caso contrário--registre a seguinte mensagem: "Você não sabe? ECMAScript!"

![](ifelse_task2.svg)

Expand Down
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -6,7 +6,7 @@
<script>
'use strict';

let value = prompt('Type a number', 0);
let value = prompt('Digite um número', 0);

if (value > 0) {
alert(1);
Expand Down
2 changes: 1 addition & 1 deletion1-js/02-first-steps/10-ifelse/3-sign/solution.md
View file
Open in desktop
Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@


```js run
let value = prompt('Type a number', 0);
let value = prompt('Digite um número', 0);

if (value > 0) {
alert( 1 );
Expand Down
12 changes: 6 additions & 6 deletions1-js/02-first-steps/10-ifelse/3-sign/task.md
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -2,14 +2,14 @@ importance: 2

---

#Show the sign
#Mostre o sinal

Using `if..else`,write the code which gets a number via `prompt`and then shows in `alert`:
Usando `if..else`,escreva o código que obtém um número via `prompt`e depois mostra em `alert`:

- `1`,if the value is greater than zero,
- `-1`,if less than zero,
- `0`,if equals zero.
- `1`,se o valor for maior que zero,
- `-1`,se menor que zero,
- `0`,se igual a zero.

In this task we assume that the input is always a number.
Nesta tarefa assumimos que a entrada é sempre um número.

[demo src="if_sign"]
View file
Open in desktop
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@


```js
let result = (a + b < 4) ? 'Below' : 'Over';
let result = (a + b < 4) ? 'Menor' : 'Maior ou igual';
```

View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -2,16 +2,16 @@ importance: 5

---

#Rewrite 'if'into '?'
#Reescreva 'if'usando '?'

Rewrite this `if`using the conditional operator `'?'`:
Reescreva este `if`usando o operador ternário `'?'`:

```js
let result;

if (a + b < 4) {
result = 'Below';
result = 'Menor';
} else {
result = 'Over';
result = 'Maior ou igual';
}
```
View file
Open in desktop
Original file line numberDiff line numberDiff line change
@@ -1,9 +1,9 @@


```js
let message = (login == 'Employee') ? 'Hello' :
(login == 'Director') ? 'Greetings' :
(login == '') ? 'No login' :
let message = (login == 'Funcionário') ? 'Olá' :
(login == 'Diretor') ? 'Saudações' :
(login == '') ? 'Não logado' :
'';
```

View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -2,21 +2,21 @@ importance: 5

---

#Rewrite 'if..else'into '?'
#Reescreva 'if..else'usando '?'

Rewrite `if..else`using multiple ternary operators `'?'`.
Reescreva `if..else`usando vários operadores ternários `'?'`.

For readability, it's recommended to split the code into multiple lines.
Para facilitar a leitura, é recomendável dividir o código em várias linhas.

```js
let message;

if (login == 'Employee') {
message = 'Hello';
} else if (login == 'Director') {
message = 'Greetings';
if (login == 'Funcionário') {
message = 'Olá';
} else if (login == 'Diretor') {
message = 'Saudações';
} else if (login == '') {
message = 'No login';
message = 'Não logado';
} else {
message = '';
}
Expand Down
Loading
[8]ページ先頭
©2009-2025 Movatter.jp