//前3后4
export const numberRexg1 = (value: any) => {
    if (!value) {
        return;
    }
    if (value.toString().indexOf(".") != -1) {
        let value_after = parseInt(value.toString().substring(0, value.indexOf(".")));
        let value_before = value.replace(/\d+\.(\d*)/, "$1");
        if (value_after.toString().length > 3) {
            let newValue = value_after.toString().substring(0, 3) + "." + value_before;
            return (newValue.toString().match(/\d{1,3}(\.\d{0,4})?/) || [""])[0];
        } else {
            return (value.toString().match(/\d{1,3}(\.\d{0,4})?/) || [""])[0];
        }
    }
    return (value.toString().match(/\d{1,3}(\.\d{0,4})?/) || [""])[0];
};