How do I replace a substring in a string using JavaScript?
An example of an AI chatbot conversation about replacing substrings in JavaScript strings.
How do I replace a substring in a string using JavaScript?
You can use the replace() method in JavaScript. For example: let newString = originalString.replace('old', 'new');
What if I want to replace all occurrences of a substring?
To replace all occurrences, you can use a regular expression with the global flag: let newString = originalString.replace(/old/g, 'new');
Can I use a function to determine the replacement?
Yes! You can pass a function as the second argument to replace(). It will be called for each match.
Can you show me an example of using a function for replacement?
Sure! Here's an example: let newString = originalString.replace(/old/g, (match) => match.toUpperCase()); This will replace 'old' with 'OLD'.
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