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How To Replace All Backslashes In A String Using JavaScript? - LearnShareIT

How To Replace All Backslashes In A String Using JavaScript?

Replace all Backslashes in a String using JavaScript

Backslashes are used to escape characters in a string. You can use some string methods to replace all backslashes in a string using JavaScript. This article will show you how to use these methods to do just that.

Replace all backslashes in a string using JavaScript

We recommend some ways below. Read the code, then write your own version.

Using String.replaceAll() method

In the previous post, we covered the syntax of the replaceAll() method. You can read about it here.

The String.replaceAll() method does what it sounds like: It replaces one string with another. It goes through a string, finds every substring that matches the first parameter, and then replaces it with the second.

To replace all backslashes in a string, we pass the backslash into the first parameter and the replacement character for the backslash into the second parameter. Like this:

let url = 'learnshareit.com\\javascript\\strings\\articles';
console.log('Before:', url)

// Use replaceAll() to replace all backslashes with slashes
url = url.replaceAll("\\", '/')
console.log('After:', url)

Output:

Before: learnshareit.com\javascript\strings\articles
After: learnshareit.com/javascript/strings/articles

Using String.replace() with regex

The replace() method searches for the first occurrence of a given value and replaces it with another string. But with the g flag of the regex, we can replace all matching substrings in a string.

We will use the following regex: /\\/g

In there:

  • \\: the backslashes we need to search for in the string.
  • g: matches the entire string.
let url = 'learnshareit.com\\javascript\\strings\\articles';
console.log('Before:', url)

// Use the replace() method with a regex to replace all backslashes with slashes
url = url.replace(/\\/g, '/')
console.log('After:', url)

Output:

Before: learnshareit.com\javascript\strings\articles
After: learnshareit.com/javascript/strings/articles

Using split() and join() methods

We introduced the split() and join() methods in this article. You can read more about their syntax to understand them better.

We can use split() and join() methods to replace all backslashes in a string. The split() method splits the string into an array of substrings, while the join() method joins the array back into a string. To replace all backslashes, we can first split the string by backslash, then join it back together using another separator.

let url = 'learnshareit.com\\javascript\\strings\\articles';
console.log('Before:', url)

// Split the url with a backslash, then join it with a slash
url = url.split("\\").join('/')
console.log('After:', url)

Output:

Before: learnshareit.com\javascript\strings\articles
After: learnshareit.com/javascript/strings/articles

Summary

In summary, although there are several ways to replace all backslashes in a string using JavaScript, we think the replace() method is the best way. It helps optimize your code and save time. We hope you found this article helpful.

Have a good day!

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