onblur事件与html结合

function discountCheck(){
    //var checkVal=$('input:text[name="Fee1"]').val();
    var checkVal=$("#addDownPrice").val();

    if( checkVal !="" && checkVal!= null && Number(checkVal)>0){
        $("#checkLabel").html("降价是在当前售价再减少"+checkVal+"元"+"</br>");
        $("#checkLabel").css("display",'inline');
    }
    else{
        $("#checkLabel").css("display",'none');
    }
}

<tr class="jiangjia">
                        <td class="queryTitle" width="70px">降价</td>
                        <td class="queryContent" colspan="3">
                        <input class="inputText" type="text" name="Fee1" id="addDownPrice" onblur="discountCheck()" /><span style="color:red">&nbsp;*<label id="checkLabel" style="display:none;font-weight:bold;font-size:20px"></label>降价不能低于当前售价</span><br>
                    </tr>