How to use javascript to get an ASP.NET's Textbox Control's Value

Question

Suppose I have an ASP.NET Text Box as Below :

<asp:TextBox ID="txtQuantity" runat="server" Text="0"></asp:TextBox>

I want to get this box's current value in javascript. How can I access this element?

ram · Accepted Answer · 2010-01-20 14:46:29Z

12

use the clientID property

document.getElementByID('<%=txtQuantity.ClientID %>')

More information here

you can also use find

Quoted from the above link:

Additionaly the ClientID is used in ASP.NET Ajax as the unique identifier of client-side controls. Thus the following JavaScript statement is commonly used:

var control = $find("<%= MyControl1.ClientID %>");

answered Jan 20, 2010 at 14:46

ram

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Idan K · Accepted Answer · 2010-01-20 14:47:53Z

2

You can get the client side ID using txtQuantity.ClientID.

answered Jan 20, 2010 at 14:47

Idan K

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