Validating number not work with decimal

Hi experts, I'm using code in a purpose of validating number, but I've found out that when I use decimal the code will no longer identify as number. I wish to include here decimals and recognize as number. any help pls!

    var regex=/^[0-9]+$/;
    if (!uc.match(regex) || !sp.match(regex) || !qty.match(regex) || !reOr.match(regex))
    {
        alert("Input must be numbers");
        return false;
    }

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