How to do strict regex validation in js?

Question

JavaScript

var regExp = (/^([0-9]+)([.]?)([0-9])\+|\-|\*|\/([0-9]+)([.]?)([0-9])\+|\-|\*|\//);

Can you please tell me how to make a strict check with this expression?

Answer 1

let's say I enter 24 + 2 (but I want to enter 24 + 25) he immediately considers equal

In this case, your regular expression should look like
you just wrote a regular expression. You didn't even hint what exactly you want to limit. Start with a good problem statement.