How to create a calculator using Javascript?

Question

I want to create a calculator that when I press the operator(+- / %) the value of my input type text is saved to another variable as number while the value of input is erased. I know how to make string a number I just have a problem with the erased value. Please help thanks.

Answer 1

eval(stringCode) can be helpful......

Answer 2

Look at user codes in playground: many have write ( or save sometimes ^^ ) some calculators implemented in JS...

Not, a complete one, but an example made to understand the principle:
https://code.sololearn.com/WzS1Rzioz166/#js

Answer 3

Thanks :)