replace()

Core Math

replace() is a MATLAB®-compatible core math function for replace all occurrences of `old` substring with `new`. returns a new string of the same kind as the input. Run it online in your browser with SimLab — free, no install, no license required.

Replace ALL occurrences of `old` substring with `new`. Returns a new string of the same kind as the input.

▶ Try replace() in SimLab — Free

Syntax

s.replace(old, new)

replace(s, old, new)

Examples — run replace() in your browser

replace("hello", "ello", "i")

▶ Run

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Frequently Asked Questions about replace()

Is the replace() function free to use in SimLab?

Yes. SimLab is 100% free — no signup, no license, and no usage limits. You can run replace() and 510+ other MATLAB®-compatible functions directly in your browser at simulations4all.com/simlab.

Do I need to install MATLAB to use replace()?

No. SimLab runs entirely in your web browser with zero installation. The replace() function works without any MATLAB® license or software download.

What does replace() do?

Replace ALL occurrences of `old` substring with `new`. Returns a new string of the same kind as the input. It is a MATLAB®-compatible core math function available in SimLab with the same calling syntax as MATLAB® — typically: s.replace(old, new).

Can I run replace() in my browser?

Yes. Open SimLab at simulations4all.com/simlab, write or paste code that calls replace(), and run it. Execution happens locally in your browser — no data leaves your machine.

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