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How Can I Safely Evaluate Mathematical Expressions from Strings in JavaScript?

Barbara Streisand
Barbara StreisandOriginal
2024-12-07 20:59:12450browse

How Can I Safely Evaluate Mathematical Expressions from Strings in JavaScript?

Evaluating Mathematical Expressions from Strings in JavaScript

Evaluating mathematical expressions from strings is a common task in programming. However, using the eval() function to do so is discouraged due to security concerns. This article explores alternative solutions to evaluate mathematical expressions without relying on eval().

One option is to use the JavaScript Expression Evaluator library. This library allows you to evaluate expressions like:

Parser.evaluate("2 ^ x", { x: 3 });

Another option is mathjs, which supports expressions such as:

math.eval('sin(45 deg) ^ 2');

Alternatively, there is a solution found on Stack Overflow that provides a more detailed and comprehensive implementation for evaluating mathematical expressions from strings: https://stackoverflow.com/a/75355272/104250.

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