Files
Nicholas Carrigan (he/him) 3da4be21bb chore: seed chinese traditional (#42005)
Seeds the chinese traditional files manually so we can deploy to
staging.
2021-05-05 22:43:49 +05:30

115 lines
1.8 KiB
Markdown

---
id: 56533eb9ac21ba0edf2244db
title: 介紹 else if 語句
challengeType: 1
videoUrl: 'https://scrimba.com/c/caeJ2hm'
forumTopicId: 18206
dashedName: introducing-else-if-statements
---
# --description--
如果你有多個條件語句,你可以通過 `else if` 語句把 `if` 語句鏈起來。
```js
if (num > 15) {
return "Bigger than 15";
} else if (num < 5) {
return "Smaller than 5";
} else {
return "Between 5 and 15";
}
```
# --instructions--
使用 `else if` 實現同樣的效果。
# --hints--
你應該至少有兩個 `else` 表達式。
```js
assert(code.match(/else/g).length > 1);
```
你應該至少有兩個 `if` 表達式。
```js
assert(code.match(/if/g).length > 1);
```
應該關閉每一個 `if else` 代碼塊。
```js
assert(
code.match(
/if\s*\((.+)\)\s*\{[\s\S]+\}\s*else\s+if\s*\((.+)\)\s*\{[\s\S]+\}\s*else\s*\{[\s\S]+\s*\}/
)
);
```
`testElseIf(0)` 應該返回字符串 `Smaller than 5`
```js
assert(testElseIf(0) === 'Smaller than 5');
```
`testElseIf(5)` 應該返回字符串 `Between 5 and 10`
```js
assert(testElseIf(5) === 'Between 5 and 10');
```
`testElseIf(7)` 應該返回字符串 `Between 5 and 10`
```js
assert(testElseIf(7) === 'Between 5 and 10');
```
`testElseIf(10)` 應該返回字符串 `Between 5 and 10`
```js
assert(testElseIf(10) === 'Between 5 and 10');
```
`testElseIf(12)` 應該返回字符串 `Greater than 10`
```js
assert(testElseIf(12) === 'Greater than 10');
```
# --seed--
## --seed-contents--
```js
function testElseIf(val) {
if (val > 10) {
return "Greater than 10";
}
if (val < 5) {
return "Smaller than 5";
}
return "Between 5 and 10";
}
testElseIf(7);
```
# --solutions--
```js
function testElseIf(val) {
if(val > 10) {
return "Greater than 10";
} else if(val < 5) {
return "Smaller than 5";
} else {
return "Between 5 and 10";
}
}
```