javascript 如何根据会话变量以编程方式更改表单操作？
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How to change the form action programatically according to session variable?
提问by Anyname Donotcare
If i have a formwhich actionshould differ according to some session variable . How can i change the action of the form dynamically so that on client click of specific link button i could submit the form with the required action.
如果我有一个应该根据某些会话变量form而action有所不同。如何动态更改表单的操作，以便在客户端单击特定链接按钮时，我可以提交具有所需操作的表单。
<form id="myform" action="I wanna to change it dynamically" method="post" >
<%-------------%>
</form>
<script type="text/javascript">
function submitform()
{
document.myform.submit();
}
</script>
For example :
例如 ：
If session["emp"] = 1 then the action is /A.aspx
If session["emp"] = 2 then the action is /B.aspx
回答by James Hill
Option 1
选项1
I typically place server values in hidden fields when the form loads so that I can interact with them in JavaScript:
我通常在表单加载时将服务器值放在隐藏字段中，以便我可以在 JavaScript 中与它们交互：
function submitform()
{
// Get URL that was set server-side for form submission
var myHiddenObj = document.getElementById("<%= hdnServerValue.ClientID %>");
// Get form object
var myFormObj = document.getElementById("myform");
// Change form action & submit
myFormObj.action = myHiddenObj.value;
myHiddenObj.submit();
}
Option 2
选项 2
If you simply want the form action to change and require no other client-side processing, simply change the form action on the server (you'll need to add runat="server"to your form tag):
如果您只想更改表单操作并且不需要其他客户端处理，只需更改服务器上的表单操作（您需要添加runat="server"到您的表单标签）：
Markup:
标记：
<form id="myform" runat="server" action="" method="post" >
<%-------------%>
</form>
C# (or your preferred server side language)
C#（或您首选的服务器端语言）
if(Session["emp"].ToString() == "1")
myform.Action = "A.aspx";
else if (Session["emp"].ToString() == "2")
myform.Action = "B.aspx";
else
// Handle neither 1 or 2
回答by davit_gri
Try this
试试这个
if(condiotion1)
form1.Attributes.Add("action", "My Action1");
else if(condiotion2)
form1.Attributes.Add("action", "My Action2");
