Question

53

How to set asp.net hidden field in JavaScript and access the value in C# code behind

rated 0 times [ 55] [ 2] / answers: 1 / hits: 7489 / 10 Years ago, sun, april 6, 2014, 12:00:00

I'm trying to set hidden field value in JS which I think works fine with this approach:

  <asp:HiddenField ID="hfLatSW" runat="server" />



   var latSW = bounds.getSouthWest().lat();

   $('#<%=hfLatSW.ClientID %>').value = latSW;

I am trying to access the value on asp.net button click in code behind gives me null value. What might be happening in the postback and why am I not able to access the value set by JavaScript?

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mikael

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4 Years ago

answered 10 Years ago mckaylab · Accepted Answer

.value isn't a jQuery property. Use .val():

$('#<%=hfLatSW.ClientID %>').val(latSW);

Or without jQuery:

document.getElementById('<%=hfLatSW.ClientID %>').value = latSW;