Question

我有一个表单，我试图根据2个下拉列表计算一些货币价值，然后显示仅在一个名为GrandTotal的文本框中的总数，这是只读的。

页面加载并将数据库中的定价数据导入隐藏字段。

InitialPrice = 660（强制性）

EQup1Price = 550

EQup2Price = 440

2下拉（EQup1，EQup2）值1-5。

购买大于1并为EQup1和EQup2免费获得一个。

计算是我的头脑。

 <p>InitialPrice -: <strong>$660.00</strong></p>
 <form name="Edit" method="post" action="mypageprocess">
<p><label for="EQup1">How many Branches?</label><br /><select name="EQup1" onblur="calc(this.form)" id="EQup1"/>    
        <option value="0">Please select</option> 
        <option value="1" >One</option>
        <option value="2" >Two</option>
        <option value="3" >Three</option>
        <option value="4" >Four</option>
        <option value="5" >Five</option>
        </select> &nbsp;&nbsp; x <strong>$550.00</strong>
</p> 


<p><label for="EQup2">How many Satellits?</label><br /><select name="EQup2" onblur="calc(this.form)" id="EQup2"/>    
        <option value="0">Please select</option> 
        <option value="1" >One</option>
        <option value="2" >Two</option>
        <option value="3" >Three</option>
        <option value="4" >Four</option>
        <option value="5" >Five</option>
        </select> &nbsp;&nbsp; x <strong>$440.00 </strong>
</p> 


<input type="text" onfocus="this.blur();" name="GrandTotal" size="10" readonly="readonly"/>

        <input type="hidden" name="InitialPrice" value="660" />
        <input type="hidden" name="EQup1Price" value="550" />
        <input type="hidden" name="EQup2Price" value="440" />
     </form>

        <script>
          function calc(theForm) {
          // console.log("calc(theForm)");


        var myEquip1 = document.Edit.EQup1.value;
        var myEquip2 = document.Edit.EQup2.value;
        Var myFixedPrice = document.Edit.InitialPrice.value;

Var myEquip1Price = document.Edit.EQup1Price.value;
Var myEquip2Price = document.Edit.EQup2Price.value;

    if  (myEquip1 > 1)
{
    var myEquip1Total = (myEquip1*myEquip1Price) - (myEquip1Price)

}
else
 {
    var myEquip1Total = (myEquip1*myEquip1Price) - (myEquip1Price)

}

    if  (myEquip2 > 1)
{
    var myEquip2Total = (myEquip2*myEquip2Price) - (myEquip2Price)

}
else
 {
    var myEquip2Total = (myEquip2*myEquip2Price) - (myEquip2Price)

}

    theForm.GrandTotal.value = (myEquip2Total + myEquip1Total + myFixedPrice)
    }
    </script>

Answer 1

计算jquery中的隐藏字段

$(":hidden").length

Answer 2

$("#GrandTotal").val(Number($("#EQup1").val()) + Number($("#EQup1").val()));

使用jquery计算隐藏字段

2 个答案: