var regBox = {

regMoney:/^(([1-9]\d{0,9})|0)(\.\d{1,2})?$/,

}

var benefit_price = $("#benefit_price").val();

var price = $("#price").val();

if(benefit_price != null && benefit_price != ''){

benefit_price = parseInt(benefit_price);

}

if(price != null && price != ''){

price = parseInt(price);

}

//判断金额大小

if(!regBox.regMoney.test(benefit_price) || !regBox.regMoney.test(price) || benefit_price == '' || price == '') {

alert("请输入正确的金额数目");

return;

}

if(benefit_price<=price){

alert("优惠前价格必须大于实际价格");

return;

}