freeCodeCamp/guide/chinese/certifications/javascript-algorithms-and-d.../basic-javascript/constructing-strings-with-v.../index.md

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---
title: Constructing Strings with Variables
localeTitle: 用变量构造字符串
---
## 用变量构造字符串
添加存储字符串的变量,以创建更长的字符串。确保你的拼写和间距是正确的。
```
var myName = "Bobby";
var myFavLetter = "B";
var sentence = "Hello, I'm " + myName + ". My favorite letter is " + myFavLetter + ".";
//The result is "Hello, I'm Bobby. My favorite letter is B.
```