Is there a way to get a <button> element to link to a location without wrapping it in an <a href ... tag?

Inline Javascript:

<button onclick="window.location='http://www.example.com';">Visit Page Now</button>

Defining a function in Javascript:

<script>
    function visitPage(){
        window.location='http://www.example.com';
    }
</script>
<button onclick="visitPage();">Visit Page Now</button>

or in Jquery

<button id="some_id">Visit Page Now</button>

$('#some_id').click(function() {
  window.location='http://www.example.com';
});

Here's a solution which will work even when JavaScript is disabled:

<form action="login.html">
    <button type="submit">Login</button>
</form>

The trick is to surround the button with its own <form> tag.

I personally prefer the <button> tag, but you can do it with <input> as well:

<form action="login.html">
    <input type="submit" value="Login"/>
</form>

Just do this

<button OnClick=" location.href='link.html' ">Visit Page Now</button>

Although, it's been a while since I've touched JavaScript - maybe location.href is outdated? Anyways, that's how I would do it.