How Can I Effectively Replace Characters in Immutable JavaScript Strings?

String Replacement in JavaScript with Immutable Strings

Attempting to replace special characters such as smart quotes ('', ') and symbols (©, ®, ™) with their regular counterparts using the replace() method may not yield the desired result. This is because, in JavaScript, strings are immutable, meaning they cannot be modified in place.

To effectively replace characters in a string, use the following steps:

1. Assign the Result to a New Variable

Instead of modifying the original string, assign the result of the replacement to a new variable:

let newStr = str.replace(/[“”]/g, '"');
newStr = newStr.replace(/[‘’]/g, "'");

2. Chain Replacements for Single Line

If you wish to perform multiple replacements in a single statement, chain the replace() calls:

let newStr = str.replace(/[“”]/g, '"').replace(/[‘’]/g, "'");

By following these steps, you ensure that the original string remains intact while creating a new string with the desired replacements. Remember, string replacement methods in JavaScript return new strings rather than modifying the existing ones.

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