10 examples of 'jquery find first element' in JavaScript

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export function find () {
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  return $('.frost-button')
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}

42
function find(element) {
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	for (var i = 0; i < this.dataStore.length; ++i) {
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		if (this.dataStore[i] == element) {
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			return i;
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		}
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	}
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	return -1;
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}

28
function find(element) {
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  for (var i = 0; i < this.dataStore.length; ++i) {
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    if (this.dataStore[i] == element) {
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      return i;
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    }
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  }
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  return -1;
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}

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function getElement(element) {
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    if (periodic_table[element] !== undefined) {
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        return periodic_table[element];
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    } else {
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        return null;
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    }
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}

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function findParent ($elt, className) {
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    while ($elt) {
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        if ($elt.hasClass(className))
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            return $elt;
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        $elt = $elt.parent();
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    }
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    return null;
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}

33
function findElement(element, test) {
34
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	if (test(element)) {
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		return element;
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	}
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	for (var i = 0; i < element.children().length; i++) {
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		var result = findElement(element.children[i], test);
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		if (result) {
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			return;
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		}
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	}
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	return null;
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}

243
function getFirstChildElement(element) {
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    if (element.firstElementChild) {
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        return element.firstElementChild;
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    } else {
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        var node = element.firstChild;
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        while (node && 1 !== node.nodeType) {
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            node = node.nextSibling;
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        }
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        return node;
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    }
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}

73
function _insertBeforeFirst($container, selector, elem) {
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    const foundElems = $container.find(selector);
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    if (foundElems.length > 0) {
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        foundElems.eq(0).before(elem);
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    } else {
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        $container.append(elem);
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    }
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}

22
export function closest(element: Element, selector: string): Element | null {
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  return closestCallback(element, (el: Element) => matches.call(el, selector))
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}

12
function closest(element, selector) {
13
	var matchesFn;
14
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	// find vendor prefix
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	['matches', 'msMatchesSelector'].some(function(fn) {
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		if (typeof document.body[fn] == 'function') {
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			matchesFn = fn;
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			return true;
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		}
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		return false;
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	})
23
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	var parent;
25
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	// Traverse parents
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	while (element) {
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		parent = element.parentElement;
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		if (parent && parent[matchesFn](selector)) {
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			return parent;
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		}
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		element = parent;
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	}
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	return null;
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}