freeCodeCamp/curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/debugging/catch-mixed-usage-of-single-and-double-quotes.md

---
id: 587d7b84367417b2b2512b37
title: Catch Mixed Usage of Single and Double Quotes
challengeType: 1
forumTopicId: 301188
dashedName: catch-mixed-usage-of-single-and-double-quotes
---

# --description--

JavaScript allows the use of both single (`'`) and double (`"`) quotes to declare a string. Deciding which one to use generally comes down to personal preference, with some exceptions.

Having two choices is great when a string has contractions or another piece of text that's in quotes. Just be careful that you don't close the string too early, which causes a syntax error.

Here are some examples of mixing quotes:

```js
// These are correct:
const grouchoContraction = "I've had a perfectly wonderful evening, but this wasn't it.";
const quoteInString = "Groucho Marx once said 'Quote me as saying I was mis-quoted.'";
// This is incorrect:
const uhOhGroucho = 'I've had a perfectly wonderful evening, but this wasn't it.';
```

Of course, it is okay to use only one style of quotes. You can escape the quotes inside the string by using the backslash (<code>\\</code>) escape character:

```js
// Correct use of same quotes:
const allSameQuotes = 'I\'ve had a perfectly wonderful evening, but this wasn\'t it.';
```

# --instructions--

Fix the string so it either uses different quotes for the `href` value, or escape the existing ones. Keep the double quote marks around the entire string.

# --hints--

Your code should fix the quotes around the `href` value "#Home" by either changing or escaping them.

```js
assert(code.match(/<a href=\s*?('|\\")#Home\1\s*?>/g));
```

Your code should keep the double quotes around the entire string.

```js
assert(code.match(/"<p>.*?<\/p>";/g));
```

# --seed--

## --seed-contents--

```js
let innerHtml = "<p>Click here to <a href="#Home">return home</a></p>";
console.log(innerHtml);
```

# --solutions--

```js
let innerHtml = "<p>Click here to <a href=\"#Home\">return home</a></p>";
console.log(innerHtml);
```