digitalnord

Yes, you can try to change the $ to jQuery, or wrap it all in an anonymous function:

jQuery(document).ready(function ($) {
  // Here you can use $ for jQuery
});

JSFiddle Demo

Hey, here is one way to do that:

HTML

<div class="moveimg">
	<img src="https://placehold.it/350x150/ff0">
	<div class="moveimg-hover"><img src="https://placehold.it/350x150/cf0"></div>
</div>

jQuery

jQuery('body').on('mousemove', '.moveimg', function (e) {
  jQuery(e.currentTarget).find('.moveimg-hover').css('width', e.offsetX);
});

CSS

.moveimg { position: relative; display: inline-block; }
.moveimg-hover { position: absolute; top: 0; width: 0; height: 100%; overflow: hidden; }
.moveimg-hover img { max-width: none; }

This is one way to do it with jQuery:

jQuery(document).ready(function ($) {
	var $select = $('#unique_id');
	var $list = $('<ul>').insertBefore($select);

	$select.find('option').each(function () {
		var val = $(this).val();
		if (!val) return;
		$list.append('<li>' + val + '</li>');
	});
});

Try to change the anonymous function to wait with execution until the document is ready:

jQuery(document).ready(function ($) {
    $('#minimal .demo').bracket({ init: minimalData /* data to initialize the bracket with */ })
})

You can do this with jQuery:

$('#the_select_box').change(theFunctionToCall);

function theFunctionToCall (e) {
  // do something
}

Here is a shorter version of the jQuery part:

jQuery(document).ready(function ($) {
	var $container = $('.harimay_hidden').hide(),
		$open = $('<a href="#" class="button">L?s mere om Diana ↓</a>').insertBefore($container),
		$close = $open.clone().html('Luk ↑').appendTo($container);

	$open.add($close).click(function (e) {
		e.preventDefault();
		$container.slideToggle(1000);
		$open.fadeToggle(500);
	});
});

Which version of woocommerce are you on?