无法获取表格进行验证[关闭]

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                </div>
            </div>
        </div>
                <hr class="my12 outline-none baw0 bb bc-powder-2">
            <div class="grid fw-nowrap fc-black-600">
                    <div class="grid--cell mr8">
                        <svg aria-hidden="true" class="svg-icon iconLightbulb" width="18" height="18" viewbox="0 0 18 18"><path d="M9.5.5a.5.5 0 0 0-1 0v.25a.5.5 0 0 0 1 0V.5zm5.6 2.1a.5.5 0 0 0-.7-.7l-.25.25a.5.5 0 0 0 .7.7l.25-.25zM1 7.5c0-.28.22-.5.5-.5H2a.5.5 0 0 1 0 1h-.5a.5.5 0 0 1-.5-.5zm14.5 0c0-.28.22-.5.5-.5h.5a.5.5 0 0 1 0 1H16a.5.5 0 0 1-.5-.5zM2.9 1.9c.2-.2.5-.2.7 0l.25.25a.5.5 0 1 1-.7.7L2.9 2.6a.5.5 0 0 1 0-.7z" fill-opacity=".4"></path><path opacity=".4" d="M7 16h4v1a1 1 0 0 1-1 1H8a1 1 0 0 1-1-1v-1z" fill="#3F3F3F"></path><path d="M15 8a6 6 0 0 1-3.5 5.46V14a1 1 0 0 1-1 1h-3a1 1 0 0 1-1-1v-.54A6 6 0 1 1 15 8zm-4.15-3.85a.5.5 0 0 0-.7.7l2 2a.5.5 0 0 0 .7-.7l-2-2z" fill="#FFC166"></path></svg>
                    </div>
                <div class="grid--cell lh-md">
                    <p class="mb0">
                        <b>Want to improve this question?</b> <a href="/posts/18315801/edit">Update the question</a> so it's <a href="/help/on-topic">on-topic</a> for Stack Overflow.
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                    <p class="mb0 mt6">Closed <span title="2013-08-19 17:36:55Z" class="relativetime">6 years ago</span>.</p>
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    </aside>

The problem is nothing validates. I can leave the form empty and it gives no alert

<html>
<body>

<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<script type="text/javascript">
    function validateForm() {

        var x = document.forms["myform"]["fname"].value;

        if (x == null || x == "") {
            alert("Enter your certificate address first.");
        } else if(!x.match(/facebook/g) || !x.match(/access_token/g)) {
            alert("Invalid certificate address, please try again...");
return false;
        }
)

</script>

<form name="myform" action="welcome.php" method="post" onsubmit="return validateForm();">
Name: <input type="text" name="fname">
<input type="submit" value="submit">
</form>

</body>
</html>

not sure what is wrong with this. looks pretty straitforward

</div>

Missing your last end bracket. Changes ) to }