How to Remove all Hyphens from a String in JavaScript

Remove all Hyphens from a String #

To remove all hyphens from a string:

1. Call the replaceAll() method, passing it a hyphen as the first parameter and an empty string as the second - replaceAll('-', '').
2. The replaceAll method returns a new string with all matches replaced by the provided replacement.

Copied!
const str = '1-2-3';

const hyphensRemoved = str.replaceAll('-', '');
console.log(hyphensRemoved); // 👉️ 123

We passed the following parameters to the String.replaceAll method:

1. a substring we need to match in the string, in our case a hyphen -
2. a replacement string for each match

The replaceAll method does not change the original string, it returns a new string with all matches replaced. Strings are immutable in JavaScript.

To remove all hyphens from a string:

1. Call the replace() method, passing it a regular expression that matches all hyphens as the first parameter and an empty string as the second.
2. The replace method will return a new string containing no hyphens.

Copied!
const str = '1-2-3';

const hyphensRemoved = str.replace(/-/g, '');
console.log(hyphensRemoved); // 👉️ 123

We passed the following parameters to the String.replace method:

1. a regular expression to match in the string
2. a replacement for each match

We use the g (global) flag in the regular expression because we want to match all hyphens and not just the first occurrence of a hyphen.

Further Reading #

• Check if String contains any Letter in JavaScript
• Check if String contains Special Characters in JavaScript
• Check if String starts with Substring in JavaScript
• Check if String ends with Substring in JavaScript
• Check if String starts with one of Multiple Values in JS
• How to count the words in a String in JavaScript
• Check if String contains only Latin Letters in JavaScript
• Check if a String is all Uppercase in JavaScript
• Check if First Letter of String is Uppercase in JavaScript
• Get first letter of each Word in a String in JavaScript
• Remove the Last Word from a String using JavaScript