How to pass textbox value to java script on button click event [duplicate]

Question

Possible Duplicate:
How to pass text in a textbox to javascript function?

I need to pass the text box value as parameter of javascript method which will be fired on button click.

<asp:TextBox ID="rowID" runat="server"> </asp:TextBox>
        <asp:Button runat="server" ID="Click" OnClientClick="PassValue(Textboxvaluehere)"/>

PassValue is JavaScript method.

Thanks in Advance.

check here stackoverflow.com/questions/765205/…

Vir
– Vir

2011-06-02 12:50:00 +00:00
Commented Jun 2, 2011 at 12:50 — Vir
– Vir, Commented Jun 2, 2011 at 12:50

IUnknown · Accepted Answer · 2011-06-02 12:48:47Z

1

<asp:TextBox ID="rowID" runat="server"> </asp:TextBox>
<asp:Button runat="server" ID="Click" OnClientClick="GetTextBoxValue('<%= rowID.ClientID %>')"/>



function GetTextBoxValue(textBoxID){
   var value = window.document.getElementById(textBoxID).value; }

answered Jun 2, 2011 at 12:48

IUnknown

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codeandcloud · Accepted Answer · 2011-06-02 12:54:40Z

1

Or for cleaner mark-up, bind the event in code-behind at PageLoad like this

if (!IsPostBack)
{
    string script = String.Format("GetTextBoxValue('{0}')", rowID.ClientID);
    Click.Attributes.Add("onclick", script);
}

Now your mark-up can be like this.

<asp:TextBox ID="rowID" runat="server"> </asp:TextBox>
<asp:Button ID="Click" runat="server" />

answered Jun 2, 2011 at 12:54

codeandcloud

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Bala R · Accepted Answer · 2011-06-02 12:49:38Z

0

<asp:Button runat="server" ID="Click" OnClientClick="GetTextBoxValue('<%= rowID.ClientID %>'.value)"/>

answered Jun 2, 2011 at 12:49

Bala R

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3 Comments

Jagan Over a year ago

If i use above code its giving error like Control 'rowID' of type 'TextBox' must be placed inside a form tag with runat=server.

Bala R Over a year ago

all asp.net server side controls much be in a `form with runat="server"'. Your textbox isnt?

Jagan Over a year ago

No.. now added the form. But while debugging the script the rowID value is undefined. if i remove the .value from '<%= rowID.ClientID %>'.value then the debugging result of parameter is <%= rowID.ClientID %>. its not returning the actual id but retuning the statement

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