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HTML

              
                <ul>
	<li>Item 1</li>
	<li class="stop-here">Item 2</li>
	<li>Item 3</li>
	<li>Item 4</li>
	<li id="find-me">Item 5</li>
	<li>Item 6</li>
	<li>Item 7</li>
	<li class="stop-here">Item 8</li>
	<li>Item 9</li>
</ul>
              
            
!

CSS

              
                
              
            
!

JS

              
                /*!
 * Get previous siblings of an element until selector
 * (c) 2018 Chris Ferdinandi, MIT License, https://gomakethings.com
 * @param  {Node}   elem     The element
 * @param  {String} selector The selector to match against
 * @return {Array}           The siblings
 */
var getPreviousUntil = function (elem, selector) {

	// Setup siblings array and get previous sibling
	var siblings = [];
	var prev = elem.previousElementSibling;

	// Loop through all siblings
	while (prev) {

		// If the matching item is found, quit
		if (selector && prev.matches(selector)) break;

		// Otherwise, push to array
		siblings.push(prev);

		// Get the previous sibling
		prev = prev.previousElementSibling

	}

	return siblings;

};

var findMe = document.querySelector('#find-me');

// Returns the first two list items before #find-me
var prevStop = getPreviousUntil(findMe, '.stop-here');

// Returns all list items before #find-me
var prevAll = getPreviousUntil(findMe);

console.log('prevStop', prevStop);
console.log('prevAll', prevAll);
              
            
!
999px

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