Using a Javascript variable in asp:textbox text parameter

Question

I want to use a javascript variable (value handed over via the url) in the asp:textbox paramater text in order to have the field filled in:

<div id="username" class="form-group">
<label for="txtUsername">Email</label> 
<script type="text/javascript">
var username = querySt("username");
//document.write(username);
</script>
<asp:TextBox ID="txtUsername" runat="server" CssClass="form-control" text="<%= username %>"></asp:TextBox>

The value is not shown. How to I get the value of the variable used in the text parameter?

beautifulcoder · Accepted Answer · 2015-08-14 13:26:42Z

1

To get the value in JavaScript, you can read it from the element in the DOM.

<asp:TextBox ID="txtUsername" runat="server" CssClass="form-control" text="<%= username %>"></asp:TextBox>
<script>
    var username = document.getElementById('<%= txtUsername.ClientID %>').value;
    //document.write(username);
</script>

answered Aug 14, 2015 at 13:26

beautifulcoder

11.4k3 gold badges21 silver badges31 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

shreesha · Accepted Answer · 2015-08-14 14:11:46Z

0

assign the value to your textbox text like this

<script>
    var username = querySt("username");
    document.getElementById('<%= txtUsername.ClientID %>').value =username;
</script>

edited Aug 14, 2015 at 14:11

answered Aug 14, 2015 at 14:05

shreesha

1,8812 gold badges23 silver badges32 bronze badges

1 Comment

Keith Over a year ago

I tried your solution but still the value is not displayed in the field. When I uncomment the document.write, I can see that the variable is set.

Collectives™ on Stack Overflow

Using a Javascript variable in asp:textbox text parameter

2 Answers 2

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related