我對js中的if語句有疑問。我發表了一個聲明,但似乎並不奏效。我想通過點擊「按鈕1」來檢查這些聲明。該腳本將在計算總數之前檢查是否有任何運輸成本。 有人能告訴我如何解決我的問題?Javascript if if based on dropdown menu value
這裏是我的腳本:
<SCRIPT TYPE="text/javascript">
function berekeningen()
{
if (document.getElementById("DropdownMenu1").value = "Eeklo" && document.getElementById("Order_Subtotal").firstChild.data >= 20)
{
document.getElementById("Transportation_Cost").value="0.00";
}
else
{
document.getElementById("Transportation_Cost").value="3.00";
}
if (document.getElementById("DropdownMenu1").value = "Adegem" && document.getElementById("Order_Subtotal").firstChild.data >= 25)
{
document.getElementById("Transportation_Cost").value="0.00";
}
else
{
document.getElementById("Transportation_Cost").value="3.00";
}
if (document.getElementById("DropdownMenu1").value = "Kaprijke" && document.getElementById("Order_Subtotal").firstChild.data >= 25)
{
document.getElementById("Transportation_Cost").value="0.00";
}
else
{
document.getElementById("Transportation_Cost").value="3.00";
}
if (document.getElementById("DropdownMenu1").value = "Lembeke" && document.getElementById("Order_Subtotal").firstChild.data >= 25)
{
document.getElementById("Transportation_Cost").value="0.00";
}
else
{
document.getElementById("Transportation_Cost").value="3.00";
}
if (document.getElementById("DropdownMenu1").value = "Oosteeklo" && document.getElementById("Order_Subtotal").firstChild.data >= 25)
{
document.getElementById("Transportation_Cost").value="0.00";
}
else
{
document.getElementById("Transportation_Cost").value="3.00";
}
if (document.getElementById("DropdownMenu1").value = "Sint-Laureins" && document.getElementById("Order_Subtotal").firstChild.data >= 25)
{
document.getElementById("Transportation_Cost").value="0.00";
}
else
{
document.getElementById("Transportation_Cost").value="3.00";
}
if (document.getElementById("DropdownMenu1").value = "Ursel" && document.getElementById("Order_Subtotal").firstChild.data >= 25)
{
document.getElementById("Transportation_Cost").value="0.00";
}
else
{
document.getElementById("Transportation_Cost").value="3.00";
}
if (document.getElementById("DropdownMenu1").value = "Waarschoot" && document.getElementById("Order_Subtotal").firstChild.data >= 25)
{
document.getElementById("Transportation_Cost").value="0.00";
}
else
{
document.getElementById("Transportation_Cost").value="3.00";
}
if (document.getElementById("DropdownMenu1").value = "Zomergem" && document.getElementById("Order_Subtotal").firstChild.data >= 25)
{
document.getElementById("Transportation_Cost").value="0.00";
}
else
{
document.getElementById("Transportation_Cost").value="3.00";
}
if (document.getElementById("DropdownMenu1").value = "Knesselare")
{
document.getElementById("Transportation_Cost").value="5.00";
}
if (document.getElementById("DropdownMenu1").value = "Lovendegem")
{
document.getElementById("Transportation_Cost").value="5.00";
}
if (document.getElementById("DropdownMenu1").value = "Bassevelde")
{
document.getElementById("Transportation_Cost").value="5.00";
}
if (document.getElementById("DropdownMenu1").value = "Maldegem")
{
document.getElementById("Transportation_Cost").value="5.00";
}
}
</SCRIPT>
編輯: 我改變了腳本變量了一點,但它不工作
<script type="text/javascript" src="http://code.jquery.com/jquery-1.8.0.js"></script>
<SCRIPT TYPE="text/javascript">
function berekeningen()
{
var plaats = document.getElementById("plaats").value;
var kosten = document.getElementById("kosten").value;
var subtotaal = document.getElementById("Bestelling_subtotaal").firstChild.data
var class_1_plaatsen = new Array("Eeklo");
var class_2_plaatsen = new Array("Adegem", "Kaprijke", "Lembeke", "Oosteeklo",
"Sint-Laureins", "Ursel", "Waarschoot", "Zomergem");
var class_3_plaatsen = new Array("Knesselare", "Lovendegem", "Bassevelde", "Maldegem");
if ($.inArray(plaats, class_1_plaatsen) >= 0) {
// Berekening voor plaatsen in prijscategorie 1 hieronder.
}
else if ($.inArray(plaats, class_2_plaatsen) >= 0) {
// Berekening voor plaatsen in prijscategorie 2 hieronder.
}
else {
// Berekening voor overige plaatsen hieronder.
}
}
</SCRIPT>
我wan't使這個:
當var plaats = class_1_plaatsen和subtotaal < 15,然後alert(We leveren vanaf最低€15)。但是,如果subtotaal是15和20之間 然後kosten = 3。但是,如果subtotaal> = 20,則kosten = 0
當VAR國家地點= class_2_plaatsen和subtotaal < 20,則警報(我們 leveren vanaf最低€ 20)。但是,如果subtotaal是20和25之間 然後kosten = 3。但是,如果subtotaal> = 25,則kosten = 0
當VAR國家地點= class_3_plaatsen和subtotaal < 20,則警報(我們 leveren vanaf最低€ 20)。但是,如果subtotaal> = 20,則kosten = 5
Dyasten
http://www.jslint.com/,FIY:=是賦值運算符,==比較,===嚴格比較(那是什麼你應該使用)。 – valentinas 2012-08-13 23:00:23