Regular expression limiting number to 2 decimal characters?

Question

Regular Expressions

I am writing a React application, I need a regular expression so that only numbers can be written into the input and after the decimal point you can write a maximum of 2 digits
Here is the code

const FormShopping = observer(() => {
 const [inputText, setInputText] = useState('');

function handleInput(e)

    {   
        let text = e.target.value.replace(/[^\d.]{1, 3}/, '');
        setInputText(text);
    }
})
return (
 <Input onInput={handleInput} value={inputText} type="text" />
)

In regular expressions, I am a complete zero, I tried to write or find something myself, but I did not find a completely correct solution.
Help me please)

Answer 1

Greetings.
Well, for example like this:
^([+-]?\d+([\.,]\d{1,2})?)

Answer 2

^(-?\d+(,\d{1,2})?)$