How to pass variable from jquery to code behind (C#)?
Here is my code, but it doesn\'t work (code behind gets empty string): `
Pass Javascript Variables to Se
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<span>2021-01-26 16:14</span>
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<p>The response from Sean McMillan is right, but I think you also need to change this :</p>
<pre><code><asp:Button ID="btnJSValue" Text="Click" runat="server" OnClientClick="f"/>
</code></pre>
<p>to</p>
<pre><code><asp:Button ID="btnJSValue" Text="Click" runat="server" OnClientClick="f();"/>
</code></pre>
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<span>2021-01-26 16:18</span>
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<p>There were couple of issues in your code. The parenthesis were missing while calling <code>f</code> function in <code>onClientClick</code> and if the element has id you can just use the id to select it with <code>#</code></p>
<pre><code><head id="Head1" runat="server">
<title>Pass Javascript Variables to Server</title>
<script type="text/javascript"> // Second Step
function f() {
$("input[id*='inpHide']").val("My JavaScript Value");
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input id="inpHide" type="hidden" runat="server" />
<asp:Button ID="btnJSValue" Text="Click" runat="server" OnClientClick="f()"/>
<asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
</div>
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</body>
</code></pre>
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<span>2021-01-26 16:37</span>
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<p>Your <code><input></code> tag needs a name attribute, or it won't be posted.</p>
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