48 lines
1.4 KiB
Markdown
48 lines
1.4 KiB
Markdown
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---
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title: Learn About Functional Programming
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localeTitle: 了解功能编程
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---
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## 了解功能编程
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函数有一个输入或参数`const myFunc = (input) => { ...code to execute... }` 。在这种情况下，输入是要创建多少杯茶。
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### 方法
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只需更改一行代码即可传递此问题。必须调用`getTea()`函数并将其存储在`tea4TeamFCC`变量中。确保通读`getTea()`函数并准确理解它的作用。该函数接受一个变量 - `numOfCups` 。首先制作一个`teaCups[]`数组，并设置一个for循环来倒数传入函数的杯数。然后，通过for循环的每次迭代，将一杯新茶推入阵列。
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从而产生一个阵列，其中包含最初传递给`getTea()`函数的大量茶杯。
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### 解
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```javascript
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/**
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* A long process to prepare tea.
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* @return {string} A cup of tea.
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**/
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const prepareTea = () => 'greenTea';
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/**
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* Get given number of cups of tea.
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* @param {number} numOfCups Number of required cups of tea.
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* @return {Array<string>} Given amount of tea cups.
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**/
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const getTea = (numOfCups) => {
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const teaCups = [];
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for(let cups = 1; cups <= numOfCups; cups += 1) {
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const teaCup = prepareTea();
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teaCups.push(teaCup);
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}
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return teaCups;
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};
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// Add your code below this line
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const tea4TeamFCC = getTea(40); // :(
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// Add your code above this line
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console.log(tea4TeamFCC);
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```
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