---
id: 56533eb9ac21ba0edf2244dc
title: Chaining If Else Statements
challengeType: 1
videoUrl: ''
localeTitle: 链接如果其他声明
---
## Description
if/else语句可以链接在一起以用于复杂的逻辑。这是多个链式if / else if语句的伪代码 ： if（ condition1 ）{
语句1
} else if（ condition2 ）{
语句2
} else if（ condition3 ）{
声明3
。 。 。
} else {
statementN
}
## Instructions
写入链接if / else if语句以满足以下条件： num < 5 - return“Tiny”
num < 10 - 返回“Small”
num < 15 - 返回“中”
num < 20 - 返回“Large”
num >= 20 - 返回“巨大”
## Tests
```yml
tests:
- text: 你应该至少有四个else语句
testString: 'assert(code.match(/else/g).length > 3, "You should have at least four else statements");'
- text: 你应该至少有四个if语句
testString: 'assert(code.match(/if/g).length > 3, "You should have at least four if statements");'
- text: 你应该至少有一个return语句
testString: 'assert(code.match(/return/g).length >= 1, "You should have at least one return statement");'
- text: testSize(0)应该返回“Tiny”
testString: 'assert(testSize(0) === "Tiny", "testSize(0) should return "Tiny"");'
- text: testSize(4)应该返回“Tiny”
testString: 'assert(testSize(4) === "Tiny", "testSize(4) should return "Tiny"");'
- text: testSize(5)应返回“Small”
testString: 'assert(testSize(5) === "Small", "testSize(5) should return "Small"");'
- text: testSize(8)应该返回“Small”
testString: 'assert(testSize(8) === "Small", "testSize(8) should return "Small"");'
- text: testSize(10)应该返回“Medium”
testString: 'assert(testSize(10) === "Medium", "testSize(10) should return "Medium"");'
- text: testSize(14)应返回“Medium”
testString: 'assert(testSize(14) === "Medium", "testSize(14) should return "Medium"");'
- text: testSize(15)应该返回“Large”
testString: 'assert(testSize(15) === "Large", "testSize(15) should return "Large"");'
- text: testSize(17)应该返回“Large”
testString: 'assert(testSize(17) === "Large", "testSize(17) should return "Large"");'
- text: testSize(20)应该返回“巨大”
testString: 'assert(testSize(20) === "Huge", "testSize(20) should return "Huge"");'
- text: testSize(25)应该返回“巨大”
testString: 'assert(testSize(25) === "Huge", "testSize(25) should return "Huge"");'
```
## Challenge Seed
```js
function testSize(num) {
// Only change code below this line
return "Change Me";
// Only change code above this line
}
// Change this value to test
testSize(7);
```
## Solution
```js
// solution required
```