Remove Double Quotes from a String in JavaScript

Remove Double Quotes from a String #

To remove all double quotes from a string call the replaceAll() method on the string, passing it string containing a double quote as the first parameter and an empty string as the second. The replaceAll method will return a new string with all double quotes removed.

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const str = 'hel"l"o wor"l"d';

const removed = str.replaceAll('"', '');
console.log(removed); // 👉️ hello world

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

1. a substring we want to match in the string. In our case a string containing a double quote.
2. The replacement for each match. We need to remove each double quote, so we replace it with an empty string.

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 double quotes from a string:

1. Call the replace() method on the string, passing it a regular expression that matches all double quotes as the first parameter and an empty string as the second.
2. The replace method will return a new string with all double quotes removed.

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// Supported in IE

const str = 'hel"l"o wor"l"d';

const removed = str.replace(/"/g, '');
console.log(removed); // 👉️ hello world

The first parameter we passed to the String.replace method is a regular expression we want to match in the string.

The two forward slashes / / mark the beginning and end of the regular expression.

If you ever need help reading a regular expression, check out this regex cheatsheet by MDN. It's by far the best one out there.

The second parameter we pass to the replace method is an empty string, because we want to remove all double quotes from the string.

The replace method doesn't mutate the original string, it returns a new string.

To remove double quotes from a string:

1. Call the split() method, passing it a string containing a double quote to get an array of substrings.
2. Call the join() method on the array passing it an empty string as a parameter to join the array elements into a string.

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const str = 'hel"l"o wor"l"d';

const removed = str.split('"').join('');
console.log(removed); // 👉️ hello world

The String.split method splits the string into an array of substrings based on a provided separator.

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const str = 'hel"l"o wor"l"d';

const split = str.split('"');

// 👉️ ['hel', 'l', 'o wer', 'l', 'd']
console.log(split);

The final step is to concatenate the array elements into a string using the Array.join method.

My preferred approach is to use the replaceAll method when I can, however if you have to support Internet Explorer use either of the other approaches.