freeCodeCamp/guide/chinese/certifications/javascript-algorithms-and-data-structures/functional-programming/introduction-to-currying-and-partial-application/index.md

---
title: Introduction to Currying and Partial Application
localeTitle: Currying和Partial Application简介
---
## Currying和Partial Application简介

### 解

```javascript
function add(x) { 
  // Add your code below this line 
  return function(y) { 
    return function(z) { 
      return x + y + z; 
    } 
  } 
  // Add your code above this line 
 } 
 add(10)(20)(30); 

```