---
id: 587d7dbb367417b2b2512bab
title: Use Capture Groups to Search and Replace
challengeType: 1
---
## Description
Searching is useful. However, you can make searching even more powerful when it also changes (or replaces) the text you match.
You can search and replace text in a string using .replace() on a string. The inputs for .replace() is first the regex pattern you want to search for. The second parameter is the string to replace the match or a function to do something.
let wrongText = "The sky is silver.";
let silverRegex = /silver/;
wrongText.replace(silverRegex, "blue");
// Returns "The sky is blue."
You can also access capture groups in the replacement string with dollar signs ($).
"Code Camp".replace(/(\w+)\s(\w+)/, '$2 $1');
// Returns "Camp Code"
## Instructions
Write a regex so that it will search for the string "good". Then update the replaceText variable to replace "good" with "okey-dokey".
## Tests
```yml
tests:
- text: You should use .replace() to search and replace.
testString: assert(code.match(/\.replace\(.*\)/), 'You should use .replace() to search and replace.');
- text: Your regex should change "This sandwich is good." to "This sandwich is okey-dokey."
testString: assert(result == "This sandwich is okey-dokey." && replaceText === "okey-dokey", 'Your regex should change "This sandwich is good." to "This sandwich is okey-dokey."');
- text: You should not change the last line.
testString: assert(code.match(/result\s*=\s*huhText\.replace\(.*?\)/), 'You should not change the last line.');
```
## Challenge Seed
```js
let huhText = "This sandwich is good.";
let fixRegex = /change/; // Change this line
let replaceText = ""; // Change this line
let result = huhText.replace(fixRegex, replaceText);
```
## Solution
```js
// solution required
```