控制input框的内容输入为数字

时间：2022-11-22 13:17:19
    <script>

        function toNum(v) {

            return v.replace(/[^\d.]/g, '').replace(/^\./g, "").replace(/\.{2,}/g, ".").replace(".", "$#$").replace(/\./g, "").replace("$#$", ".");

        }

        $("[name=Amount],[name=Discount]").keyup(function () {

            $(this).val(toNum($(this).val()));

        });

        $("[name=Amount],[name=Discount]").blur(function () {

            $(this).val(toNum($(this).val()) - 0);

        });

    </script>

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只允许输入数字

验证数字的正则

[+-]?\d+(.\d+)? 数字的正则

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