How to call javascript on user control

Question

I have webapplication in c# asp.net 4.0

I have User Control in that I have written javascript :-

<script>
    function SetValue() {        
        alert(document.getElementById('offSetClient').value);
    }
</script>

<asp:HiddenField ID="clientDateTime" runat="server" />
<asp:HiddenField ID="offSetClient" runat="server" Value="Test"/>

and this User Control added into a web form. Please suggest me how can I call this javascript on User Control page load.

You asked Same Question again http://stackoverflow.com/questions/14079029/how-to-call-javascript-function-on-page-load-in-asp-net/14079066#14079066 — Satinder singh, Dec 31 '12 at 07:39

TechDo · Answer 1 · 2012-12-29T11:19:06.447

0

You can use Page.ClientScript.RegisterStartupScript to attain this.

protected void Page_Load(object sender, EventArgs e)
{
   Page.ClientScript.RegisterStartupScript(GetType(), "ShowAlert", "SetValue('" + offSetClient.ClientID + "');", true);
}

Please add an input parameter for the function to get the object of hidden field and pass the same from function.

<script type="text/javascript">
  function SetValue(objHdn) {
    alert(document.getElementById(objHdn).value);
  }
</script>

edited Dec 29 '12 at 11:19

answered Dec 29 '12 at 11:05

TechDo

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Thanks for solution but i already used this on user control's page load but it can not give message box with "Test" – MonaliJ Dec 29 '12 at 11:15
am not getting you please explain. – MonaliJ Dec 29 '12 at 11:38
Object of hidden field has to be passed to function instead of hard-coding the id directly. please check the edited answer. – TechDo Dec 29 '12 at 12:08

How to call javascript on user control

1 Answers1