Making JavaScript calculator without eval() ? is possible or impossible? [duplicate] - javascript

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Safe evaluation of arithmetic expressions in Javascript
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Evaluating a string as a mathematical expression in JavaScript
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How to code a calculator in javascript without eval
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What's an alternative to using eval() in this situation? Is there an alternative? [duplicate]
(1 answer)
Closed 13 hours ago.
I found it very hard to program a calculator that is similar to a phone calculator.
Yes. using eval() and Function () constructor is easy..
But I think it's not a good practice.
Is there any other way? Maybe in functional approach of programming.
I'm searching for answers,maybe methods on how to really program a calculator in JavaScript.

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I am interested in writing a program using Javascript. This program will parse a custom scripting language. I'm looking for a list of parser generators to evaluate that target Javascript.
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JavaScript is an object oriented language, but not through classical OO. It supports it through prototyping. I would do some research of Java Script and prototyping - Start there

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