how I can to exclude all symbols in my if statement.

Question

I create a calculator and I want to know how I can to do excluded of all the symbols if the user enter its in the input because I want to deal just with numbers and mathematical operators (like: +, -, *, /) another things I want to exclude its in my if statement... if you are understand what I mean you can help me please..

Answer 1

1. <input type="number" >

https://code.sololearn.com/WfsbY4n5vA8S/?ref=app

2. number = parseInt( string )

https://code.sololearn.com/WXsl1589Q2zy/?ref=app

.

Answer 2

ismail chraa Welcome. Keep up 💪

Answer 3

Gordon thanks so much for explanation!