How to convert math operation in string to int? JavaScript [closed]

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Can anybody tell me how to convert math operation which is in string to int and get the result? For example give string "2 + 3 * 4 - 5" to function and get correct result. Any tips how to do it?

Thank You :)

I tried to use split and join method but nothing good happend

I think what you want to do is use eval() as @Tommi is suggesting. developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/… — Chris
– Chris, Commented Oct 31, 2022 at 8:07

Asraf · Accepted Answer · 2022-10-31 08:58:22Z

2

You need to build an abstract syntax tree (AST) and iterate over the tree to get the result.

For example: you can build a tree for an expression "2 + 5 x 4" as follows

Learn more about AST

Extra:

JS AST implementation for math expressions

Math.js has lots of functionalities for parsing math expressions

you can also use JS eval() function but it has some security concerns

Cheers!

edited Oct 31, 2022 at 8:58

answered Oct 31, 2022 at 8:12

Asraf

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