Regular expressions for identifying operands and operators in a calculator application implemented with JavaScript

I am currently working on a JavaScript project to create a basic calculator. I am in need of a way to validate each item in an array of operands (sequences of digits) and operators (+, -, *, /, ** for power). I have managed to create regex patterns for digits (^\\d+$) and for the basic operands (^[\+\-\*\/\]$), but I am unsure how to incorporate the ** operand. How can I combine all these conditions to create a regex pattern that meets the requirements, such as "any sequence of digits OR any +, -, *, /, ** operand"? Your help is greatly appreciated!

Thank you!

javascriptregex

Answer №1

Check out this regex pattern:

var pattern = /^(\d+|\*\*|[+\-*/])$/;


var pattern = /^(\d+|\*\*|[+\-*/])$/;

console.log('1'.match(pattern));
console.log('123'.match(pattern));
console.log('+'.match(pattern));
console.log('-'.match(pattern));
console.log('*'.match(pattern));
console.log('/'.match(pattern));
console.log('**'.match(pattern));
console.log('123+'.match(pattern));
console.log('2+2'.match(pattern));

Answer №2

Give this a shot:

^(\+|\-|\*|\/|\*\*)$

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