Question

I need help to find a hidden button in Javascript. I am using ASP.NET 4.

I can find a "visible = True" but when i try to find a hidden element it says object not found

    <script type="text/javascript">
    function ShowAge() 
     {
    var elem = document.getElementById('MainContent_chbFilter');
        if (elem != null)
            alert("Found 1");
        else
            alert("Not Found 1");
    var elemc = document.getElementById('MainContent_txtMSISDN');
        if (elemc != null)
            alert("Found 4");
        else
            alert("Not Found 4");
    }
   </script>

I am using asp:content
Please help

Answer 1

If an element has been hidden serverside (I’m assuming this is what you’ve done), this means that it won’t get rendered onto the page, which is why Javascript won’t find it in the DOM.

What you want is to assign it a CSS class (.hidden, for example) with display:none. You can then revert it back to display:block through Javascript.