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You can add the runat=&quot;server&quot; and then add an onClientClick event.<br />
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<pre><code id="code-20-42273536-1">&lt;asp:CheckBox runat=&quot;server&quot; OnClientClick=&quot;alert(this.checked);&quot; /&gt;</code></pre>
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You can add the runat="server" and then add an onClientClick event.



<asp:CheckBox runat="server" OnClientClick="alert(this.checked);" />

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I have a checkbox on a webform. I am using javascript to toggle a &lt;div&gt; hidden / show depending on the checkbox being checked. I need to determine whether the checkbox is checked in the codebehind. If I add runat=&quot;server&quot;, the javascript doesn't work, but I cant get the state of the checkbox from the codebehind. Anyone have an idea how to fix my issue. I'm using vb.net for code behind.<br />
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&lt;input type=&quot;checkbox&quot; id=&quot;cb01&quot; /&gt;
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I have a checkbox on a webform. I am using javascript to toggle a <div> hidden / show depending on the checkbox being checked. I need to determine whether the checkbox is checked in the codebehind. If I add runat="server", the javascript doesn't work, but I cant get the state of the checkbox from the codebehind. Anyone have an idea how to fix my issue. I'm using vb.net for code behind.

<input type="checkbox" id="cb01" />

Get value of Checkbox using vb.net

Visual Basic .NET (VB.NET) is an object-oriented programming language implemented on the .NET framework, but also supported on other platforms such as Mono and Silverlight. Microsoft launched VB.NET as the successor to the Visual Basic language. Though it is similar in syntax to  Visual Basic pre-2002, it is not the same technology,

Visual Basic.NET

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.