前端利率的校验

var supplementaryRate =$("#SupplementaryRateAgreementAdminFormEdit").find("#supplementaryRate").val();
//利率不为空  进行利率检验
var regex = /^(([1-9]{1}[0-9]{0,1})|0)(\.[0-9]{1,4}){0,1}$/;
console.log("利率 = " + supplementaryRate);
if(!regex.test(supplementaryRate)){
    closeLoading();
    alertMsg("利率格式不正确<br/> 整数位不能超过两位,小数位不能超过四位");
    return;
}