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How to use Elements method of html Package

Best K6 code snippet using html.Elements

traversal.go

Source:traversal.go

...10	siblingAll11	siblingNext12	siblingNextAll13	siblingNextUntil14	siblingAllIncludingNonElements15)16// Find gets the descendants of each element in the current set of matched17// elements, filtered by a selector. It returns a new Selection object18// containing these matched elements.19func (s *Selection) Find(selector string) *Selection {20	return pushStack(s, findWithMatcher(s.Nodes, compileMatcher(selector)))21}22// FindMatcher gets the descendants of each element in the current set of matched23// elements, filtered by the matcher. It returns a new Selection object24// containing these matched elements.25func (s *Selection) FindMatcher(m Matcher) *Selection {26	return pushStack(s, findWithMatcher(s.Nodes, m))27}28// FindSelection gets the descendants of each element in the current29// Selection, filtered by a Selection. It returns a new Selection object30// containing these matched elements.31func (s *Selection) FindSelection(sel *Selection) *Selection {32	if sel == nil {33		return pushStack(s, nil)34	}35	return s.FindNodes(sel.Nodes...)36}37// FindNodes gets the descendants of each element in the current38// Selection, filtered by some nodes. It returns a new Selection object39// containing these matched elements.40func (s *Selection) FindNodes(nodes ...*html.Node) *Selection {41	return pushStack(s, mapNodes(nodes, func(i int, n *html.Node) []*html.Node {42		if sliceContains(s.Nodes, n) {43			return []*html.Node{n}44		}45		return nil46	}))47}48// Contents gets the children of each element in the Selection,49// including text and comment nodes. It returns a new Selection object50// containing these elements.51func (s *Selection) Contents() *Selection {52	return pushStack(s, getChildrenNodes(s.Nodes, siblingAllIncludingNonElements))53}54// ContentsFiltered gets the children of each element in the Selection,55// filtered by the specified selector. It returns a new Selection56// object containing these elements. Since selectors only act on Element nodes,57// this function is an alias to ChildrenFiltered unless the selector is empty,58// in which case it is an alias to Contents.59func (s *Selection) ContentsFiltered(selector string) *Selection {60	if selector != "" {61		return s.ChildrenFiltered(selector)62	}63	return s.Contents()64}65// ContentsMatcher gets the children of each element in the Selection,66// filtered by the specified matcher. It returns a new Selection67// object containing these elements. Since matchers only act on Element nodes,68// this function is an alias to ChildrenMatcher.69func (s *Selection) ContentsMatcher(m Matcher) *Selection {70	return s.ChildrenMatcher(m)71}72// Children gets the child elements of each element in the Selection.73// It returns a new Selection object containing these elements.74func (s *Selection) Children() *Selection {75	return pushStack(s, getChildrenNodes(s.Nodes, siblingAll))76}77// ChildrenFiltered gets the child elements of each element in the Selection,78// filtered by the specified selector. It returns a new79// Selection object containing these elements.80func (s *Selection) ChildrenFiltered(selector string) *Selection {81	return filterAndPush(s, getChildrenNodes(s.Nodes, siblingAll), compileMatcher(selector))82}83// ChildrenMatcher gets the child elements of each element in the Selection,84// filtered by the specified matcher. It returns a new85// Selection object containing these elements.86func (s *Selection) ChildrenMatcher(m Matcher) *Selection {87	return filterAndPush(s, getChildrenNodes(s.Nodes, siblingAll), m)88}89// Parent gets the parent of each element in the Selection. It returns a90// new Selection object containing the matched elements.91func (s *Selection) Parent() *Selection {92	return pushStack(s, getParentNodes(s.Nodes))93}94// ParentFiltered gets the parent of each element in the Selection filtered by a95// selector. It returns a new Selection object containing the matched elements.96func (s *Selection) ParentFiltered(selector string) *Selection {97	return filterAndPush(s, getParentNodes(s.Nodes), compileMatcher(selector))98}99// ParentMatcher gets the parent of each element in the Selection filtered by a100// matcher. It returns a new Selection object containing the matched elements.101func (s *Selection) ParentMatcher(m Matcher) *Selection {102	return filterAndPush(s, getParentNodes(s.Nodes), m)103}104// Closest gets the first element that matches the selector by testing the105// element itself and traversing up through its ancestors in the DOM tree.106func (s *Selection) Closest(selector string) *Selection {107	cs := compileMatcher(selector)108	return s.ClosestMatcher(cs)109}110// ClosestMatcher gets the first element that matches the matcher by testing the111// element itself and traversing up through its ancestors in the DOM tree.112func (s *Selection) ClosestMatcher(m Matcher) *Selection {113	return pushStack(s, mapNodes(s.Nodes, func(i int, n *html.Node) []*html.Node {114		// For each node in the selection, test the node itself, then each parent115		// until a match is found.116		for ; n != nil; n = n.Parent {117			if m.Match(n) {118				return []*html.Node{n}119			}120		}121		return nil122	}))123}124// ClosestNodes gets the first element that matches one of the nodes by testing the125// element itself and traversing up through its ancestors in the DOM tree.126func (s *Selection) ClosestNodes(nodes ...*html.Node) *Selection {127	set := make(map[*html.Node]bool)128	for _, n := range nodes {129		set[n] = true130	}131	return pushStack(s, mapNodes(s.Nodes, func(i int, n *html.Node) []*html.Node {132		// For each node in the selection, test the node itself, then each parent133		// until a match is found.134		for ; n != nil; n = n.Parent {135			if set[n] {136				return []*html.Node{n}137			}138		}139		return nil140	}))141}142// ClosestSelection gets the first element that matches one of the nodes in the143// Selection by testing the element itself and traversing up through its ancestors144// in the DOM tree.145func (s *Selection) ClosestSelection(sel *Selection) *Selection {146	if sel == nil {147		return pushStack(s, nil)148	}149	return s.ClosestNodes(sel.Nodes...)150}151// Parents gets the ancestors of each element in the current Selection. It152// returns a new Selection object with the matched elements.153func (s *Selection) Parents() *Selection {154	return pushStack(s, getParentsNodes(s.Nodes, nil, nil))155}156// ParentsFiltered gets the ancestors of each element in the current157// Selection. It returns a new Selection object with the matched elements.158func (s *Selection) ParentsFiltered(selector string) *Selection {159	return filterAndPush(s, getParentsNodes(s.Nodes, nil, nil), compileMatcher(selector))160}161// ParentsMatcher gets the ancestors of each element in the current162// Selection. It returns a new Selection object with the matched elements.163func (s *Selection) ParentsMatcher(m Matcher) *Selection {164	return filterAndPush(s, getParentsNodes(s.Nodes, nil, nil), m)165}166// ParentsUntil gets the ancestors of each element in the Selection, up to but167// not including the element matched by the selector. It returns a new Selection168// object containing the matched elements.169func (s *Selection) ParentsUntil(selector string) *Selection {170	return pushStack(s, getParentsNodes(s.Nodes, compileMatcher(selector), nil))171}172// ParentsUntilMatcher gets the ancestors of each element in the Selection, up to but173// not including the element matched by the matcher. It returns a new Selection174// object containing the matched elements.175func (s *Selection) ParentsUntilMatcher(m Matcher) *Selection {176	return pushStack(s, getParentsNodes(s.Nodes, m, nil))177}178// ParentsUntilSelection gets the ancestors of each element in the Selection,179// up to but not including the elements in the specified Selection. It returns a180// new Selection object containing the matched elements.181func (s *Selection) ParentsUntilSelection(sel *Selection) *Selection {182	if sel == nil {183		return s.Parents()184	}185	return s.ParentsUntilNodes(sel.Nodes...)186}187// ParentsUntilNodes gets the ancestors of each element in the Selection,188// up to but not including the specified nodes. It returns a189// new Selection object containing the matched elements.190func (s *Selection) ParentsUntilNodes(nodes ...*html.Node) *Selection {191	return pushStack(s, getParentsNodes(s.Nodes, nil, nodes))192}193// ParentsFilteredUntil is like ParentsUntil, with the option to filter the194// results based on a selector string. It returns a new Selection195// object containing the matched elements.196func (s *Selection) ParentsFilteredUntil(filterSelector, untilSelector string) *Selection {197	return filterAndPush(s, getParentsNodes(s.Nodes, compileMatcher(untilSelector), nil), compileMatcher(filterSelector))198}199// ParentsFilteredUntilMatcher is like ParentsUntilMatcher, with the option to filter the200// results based on a matcher. It returns a new Selection object containing the matched elements.201func (s *Selection) ParentsFilteredUntilMatcher(filter, until Matcher) *Selection {202	return filterAndPush(s, getParentsNodes(s.Nodes, until, nil), filter)203}204// ParentsFilteredUntilSelection is like ParentsUntilSelection, with the205// option to filter the results based on a selector string. It returns a new206// Selection object containing the matched elements.207func (s *Selection) ParentsFilteredUntilSelection(filterSelector string, sel *Selection) *Selection {208	return s.ParentsMatcherUntilSelection(compileMatcher(filterSelector), sel)209}210// ParentsMatcherUntilSelection is like ParentsUntilSelection, with the211// option to filter the results based on a matcher. It returns a new212// Selection object containing the matched elements.213func (s *Selection) ParentsMatcherUntilSelection(filter Matcher, sel *Selection) *Selection {214	if sel == nil {215		return s.ParentsMatcher(filter)216	}217	return s.ParentsMatcherUntilNodes(filter, sel.Nodes...)218}219// ParentsFilteredUntilNodes is like ParentsUntilNodes, with the220// option to filter the results based on a selector string. It returns a new221// Selection object containing the matched elements.222func (s *Selection) ParentsFilteredUntilNodes(filterSelector string, nodes ...*html.Node) *Selection {223	return filterAndPush(s, getParentsNodes(s.Nodes, nil, nodes), compileMatcher(filterSelector))224}225// ParentsMatcherUntilNodes is like ParentsUntilNodes, with the226// option to filter the results based on a matcher. It returns a new227// Selection object containing the matched elements.228func (s *Selection) ParentsMatcherUntilNodes(filter Matcher, nodes ...*html.Node) *Selection {229	return filterAndPush(s, getParentsNodes(s.Nodes, nil, nodes), filter)230}231// Siblings gets the siblings of each element in the Selection. It returns232// a new Selection object containing the matched elements.233func (s *Selection) Siblings() *Selection {234	return pushStack(s, getSiblingNodes(s.Nodes, siblingAll, nil, nil))235}236// SiblingsFiltered gets the siblings of each element in the Selection237// filtered by a selector. It returns a new Selection object containing the238// matched elements.239func (s *Selection) SiblingsFiltered(selector string) *Selection {240	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingAll, nil, nil), compileMatcher(selector))241}242// SiblingsMatcher gets the siblings of each element in the Selection243// filtered by a matcher. It returns a new Selection object containing the244// matched elements.245func (s *Selection) SiblingsMatcher(m Matcher) *Selection {246	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingAll, nil, nil), m)247}248// Next gets the immediately following sibling of each element in the249// Selection. It returns a new Selection object containing the matched elements.250func (s *Selection) Next() *Selection {251	return pushStack(s, getSiblingNodes(s.Nodes, siblingNext, nil, nil))252}253// NextFiltered gets the immediately following sibling of each element in the254// Selection filtered by a selector. It returns a new Selection object255// containing the matched elements.256func (s *Selection) NextFiltered(selector string) *Selection {257	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingNext, nil, nil), compileMatcher(selector))258}259// NextMatcher gets the immediately following sibling of each element in the260// Selection filtered by a matcher. It returns a new Selection object261// containing the matched elements.262func (s *Selection) NextMatcher(m Matcher) *Selection {263	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingNext, nil, nil), m)264}265// NextAll gets all the following siblings of each element in the266// Selection. It returns a new Selection object containing the matched elements.267func (s *Selection) NextAll() *Selection {268	return pushStack(s, getSiblingNodes(s.Nodes, siblingNextAll, nil, nil))269}270// NextAllFiltered gets all the following siblings of each element in the271// Selection filtered by a selector. It returns a new Selection object272// containing the matched elements.273func (s *Selection) NextAllFiltered(selector string) *Selection {274	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingNextAll, nil, nil), compileMatcher(selector))275}276// NextAllMatcher gets all the following siblings of each element in the277// Selection filtered by a matcher. It returns a new Selection object278// containing the matched elements.279func (s *Selection) NextAllMatcher(m Matcher) *Selection {280	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingNextAll, nil, nil), m)281}282// Prev gets the immediately preceding sibling of each element in the283// Selection. It returns a new Selection object containing the matched elements.284func (s *Selection) Prev() *Selection {285	return pushStack(s, getSiblingNodes(s.Nodes, siblingPrev, nil, nil))286}287// PrevFiltered gets the immediately preceding sibling of each element in the288// Selection filtered by a selector. It returns a new Selection object289// containing the matched elements.290func (s *Selection) PrevFiltered(selector string) *Selection {291	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingPrev, nil, nil), compileMatcher(selector))292}293// PrevMatcher gets the immediately preceding sibling of each element in the294// Selection filtered by a matcher. It returns a new Selection object295// containing the matched elements.296func (s *Selection) PrevMatcher(m Matcher) *Selection {297	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingPrev, nil, nil), m)298}299// PrevAll gets all the preceding siblings of each element in the300// Selection. It returns a new Selection object containing the matched elements.301func (s *Selection) PrevAll() *Selection {302	return pushStack(s, getSiblingNodes(s.Nodes, siblingPrevAll, nil, nil))303}304// PrevAllFiltered gets all the preceding siblings of each element in the305// Selection filtered by a selector. It returns a new Selection object306// containing the matched elements.307func (s *Selection) PrevAllFiltered(selector string) *Selection {308	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingPrevAll, nil, nil), compileMatcher(selector))309}310// PrevAllMatcher gets all the preceding siblings of each element in the311// Selection filtered by a matcher. It returns a new Selection object312// containing the matched elements.313func (s *Selection) PrevAllMatcher(m Matcher) *Selection {314	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingPrevAll, nil, nil), m)315}316// NextUntil gets all following siblings of each element up to but not317// including the element matched by the selector. It returns a new Selection318// object containing the matched elements.319func (s *Selection) NextUntil(selector string) *Selection {320	return pushStack(s, getSiblingNodes(s.Nodes, siblingNextUntil,321		compileMatcher(selector), nil))322}323// NextUntilMatcher gets all following siblings of each element up to but not324// including the element matched by the matcher. It returns a new Selection325// object containing the matched elements.326func (s *Selection) NextUntilMatcher(m Matcher) *Selection {327	return pushStack(s, getSiblingNodes(s.Nodes, siblingNextUntil,328		m, nil))329}330// NextUntilSelection gets all following siblings of each element up to but not331// including the element matched by the Selection. It returns a new Selection332// object containing the matched elements.333func (s *Selection) NextUntilSelection(sel *Selection) *Selection {334	if sel == nil {335		return s.NextAll()336	}337	return s.NextUntilNodes(sel.Nodes...)338}339// NextUntilNodes gets all following siblings of each element up to but not340// including the element matched by the nodes. It returns a new Selection341// object containing the matched elements.342func (s *Selection) NextUntilNodes(nodes ...*html.Node) *Selection {343	return pushStack(s, getSiblingNodes(s.Nodes, siblingNextUntil,344		nil, nodes))345}346// PrevUntil gets all preceding siblings of each element up to but not347// including the element matched by the selector. It returns a new Selection348// object containing the matched elements.349func (s *Selection) PrevUntil(selector string) *Selection {350	return pushStack(s, getSiblingNodes(s.Nodes, siblingPrevUntil,351		compileMatcher(selector), nil))352}353// PrevUntilMatcher gets all preceding siblings of each element up to but not354// including the element matched by the matcher. It returns a new Selection355// object containing the matched elements.356func (s *Selection) PrevUntilMatcher(m Matcher) *Selection {357	return pushStack(s, getSiblingNodes(s.Nodes, siblingPrevUntil,358		m, nil))359}360// PrevUntilSelection gets all preceding siblings of each element up to but not361// including the element matched by the Selection. It returns a new Selection362// object containing the matched elements.363func (s *Selection) PrevUntilSelection(sel *Selection) *Selection {364	if sel == nil {365		return s.PrevAll()366	}367	return s.PrevUntilNodes(sel.Nodes...)368}369// PrevUntilNodes gets all preceding siblings of each element up to but not370// including the element matched by the nodes. It returns a new Selection371// object containing the matched elements.372func (s *Selection) PrevUntilNodes(nodes ...*html.Node) *Selection {373	return pushStack(s, getSiblingNodes(s.Nodes, siblingPrevUntil,374		nil, nodes))375}376// NextFilteredUntil is like NextUntil, with the option to filter377// the results based on a selector string.378// It returns a new Selection object containing the matched elements.379func (s *Selection) NextFilteredUntil(filterSelector, untilSelector string) *Selection {380	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingNextUntil,381		compileMatcher(untilSelector), nil), compileMatcher(filterSelector))382}383// NextFilteredUntilMatcher is like NextUntilMatcher, with the option to filter384// the results based on a matcher.385// It returns a new Selection object containing the matched elements.386func (s *Selection) NextFilteredUntilMatcher(filter, until Matcher) *Selection {387	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingNextUntil,388		until, nil), filter)389}390// NextFilteredUntilSelection is like NextUntilSelection, with the391// option to filter the results based on a selector string. It returns a new392// Selection object containing the matched elements.393func (s *Selection) NextFilteredUntilSelection(filterSelector string, sel *Selection) *Selection {394	return s.NextMatcherUntilSelection(compileMatcher(filterSelector), sel)395}396// NextMatcherUntilSelection is like NextUntilSelection, with the397// option to filter the results based on a matcher. It returns a new398// Selection object containing the matched elements.399func (s *Selection) NextMatcherUntilSelection(filter Matcher, sel *Selection) *Selection {400	if sel == nil {401		return s.NextMatcher(filter)402	}403	return s.NextMatcherUntilNodes(filter, sel.Nodes...)404}405// NextFilteredUntilNodes is like NextUntilNodes, with the406// option to filter the results based on a selector string. It returns a new407// Selection object containing the matched elements.408func (s *Selection) NextFilteredUntilNodes(filterSelector string, nodes ...*html.Node) *Selection {409	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingNextUntil,410		nil, nodes), compileMatcher(filterSelector))411}412// NextMatcherUntilNodes is like NextUntilNodes, with the413// option to filter the results based on a matcher. It returns a new414// Selection object containing the matched elements.415func (s *Selection) NextMatcherUntilNodes(filter Matcher, nodes ...*html.Node) *Selection {416	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingNextUntil,417		nil, nodes), filter)418}419// PrevFilteredUntil is like PrevUntil, with the option to filter420// the results based on a selector string.421// It returns a new Selection object containing the matched elements.422func (s *Selection) PrevFilteredUntil(filterSelector, untilSelector string) *Selection {423	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingPrevUntil,424		compileMatcher(untilSelector), nil), compileMatcher(filterSelector))425}426// PrevFilteredUntilMatcher is like PrevUntilMatcher, with the option to filter427// the results based on a matcher.428// It returns a new Selection object containing the matched elements.429func (s *Selection) PrevFilteredUntilMatcher(filter, until Matcher) *Selection {430	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingPrevUntil,431		until, nil), filter)432}433// PrevFilteredUntilSelection is like PrevUntilSelection, with the434// option to filter the results based on a selector string. It returns a new435// Selection object containing the matched elements.436func (s *Selection) PrevFilteredUntilSelection(filterSelector string, sel *Selection) *Selection {437	return s.PrevMatcherUntilSelection(compileMatcher(filterSelector), sel)438}439// PrevMatcherUntilSelection is like PrevUntilSelection, with the440// option to filter the results based on a matcher. It returns a new441// Selection object containing the matched elements.442func (s *Selection) PrevMatcherUntilSelection(filter Matcher, sel *Selection) *Selection {443	if sel == nil {444		return s.PrevMatcher(filter)445	}446	return s.PrevMatcherUntilNodes(filter, sel.Nodes...)447}448// PrevFilteredUntilNodes is like PrevUntilNodes, with the449// option to filter the results based on a selector string. It returns a new450// Selection object containing the matched elements.451func (s *Selection) PrevFilteredUntilNodes(filterSelector string, nodes ...*html.Node) *Selection {452	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingPrevUntil,453		nil, nodes), compileMatcher(filterSelector))454}455// PrevMatcherUntilNodes is like PrevUntilNodes, with the456// option to filter the results based on a matcher. It returns a new457// Selection object containing the matched elements.458func (s *Selection) PrevMatcherUntilNodes(filter Matcher, nodes ...*html.Node) *Selection {459	return filterAndPush(s, getSiblingNodes(s.Nodes, siblingPrevUntil,460		nil, nodes), filter)461}462// Filter and push filters the nodes based on a matcher, and pushes the results463// on the stack, with the srcSel as previous selection.464func filterAndPush(srcSel *Selection, nodes []*html.Node, m Matcher) *Selection {465	// Create a temporary Selection with the specified nodes to filter using winnow466	sel := &Selection{nodes, srcSel.document, nil}467	// Filter based on matcher and push on stack468	return pushStack(srcSel, winnow(sel, m, true))469}470// Internal implementation of Find that return raw nodes.471func findWithMatcher(nodes []*html.Node, m Matcher) []*html.Node {472	// Map nodes to find the matches within the children of each node473	return mapNodes(nodes, func(i int, n *html.Node) (result []*html.Node) {474		// Go down one level, becausejQuery's Find selects only within descendants475		for c := n.FirstChild; c != nil; c = c.NextSibling {476			if c.Type == html.ElementNode {477				result = append(result, m.MatchAll(c)...)478			}479		}480		return481	})482}483// Internal implementation to get all parent nodes, stopping at the specified484// node (or nil if no stop).485func getParentsNodes(nodes []*html.Node, stopm Matcher, stopNodes []*html.Node) []*html.Node {486	return mapNodes(nodes, func(i int, n *html.Node) (result []*html.Node) {487		for p := n.Parent; p != nil; p = p.Parent {488			sel := newSingleSelection(p, nil)489			if stopm != nil {490				if sel.IsMatcher(stopm) {491					break492				}493			} else if len(stopNodes) > 0 {494				if sel.IsNodes(stopNodes...) {495					break496				}497			}498			if p.Type == html.ElementNode {499				result = append(result, p)500			}501		}502		return503	})504}505// Internal implementation of sibling nodes that return a raw slice of matches.506func getSiblingNodes(nodes []*html.Node, st siblingType, untilm Matcher, untilNodes []*html.Node) []*html.Node {507	var f func(*html.Node) bool508	// If the requested siblings are ...Until, create the test function to509	// determine if the until condition is reached (returns true if it is)510	if st == siblingNextUntil || st == siblingPrevUntil {511		f = func(n *html.Node) bool {512			if untilm != nil {513				// Matcher-based condition514				sel := newSingleSelection(n, nil)515				return sel.IsMatcher(untilm)516			} else if len(untilNodes) > 0 {517				// Nodes-based condition518				sel := newSingleSelection(n, nil)519				return sel.IsNodes(untilNodes...)520			}521			return false522		}523	}524	return mapNodes(nodes, func(i int, n *html.Node) []*html.Node {525		return getChildrenWithSiblingType(n.Parent, st, n, f)526	})527}528// Gets the children nodes of each node in the specified slice of nodes,529// based on the sibling type request.530func getChildrenNodes(nodes []*html.Node, st siblingType) []*html.Node {531	return mapNodes(nodes, func(i int, n *html.Node) []*html.Node {532		return getChildrenWithSiblingType(n, st, nil, nil)533	})534}535// Gets the children of the specified parent, based on the requested sibling536// type, skipping a specified node if required.537func getChildrenWithSiblingType(parent *html.Node, st siblingType, skipNode *html.Node,538	untilFunc func(*html.Node) bool) (result []*html.Node) {539	// Create the iterator function540	var iter = func(cur *html.Node) (ret *html.Node) {541		// Based on the sibling type requested, iterate the right way542		for {543			switch st {544			case siblingAll, siblingAllIncludingNonElements:545				if cur == nil {546					// First iteration, start with first child of parent547					// Skip node if required548					if ret = parent.FirstChild; ret == skipNode && skipNode != nil {549						ret = skipNode.NextSibling550					}551				} else {552					// Skip node if required553					if ret = cur.NextSibling; ret == skipNode && skipNode != nil {554						ret = skipNode.NextSibling555					}556				}557			case siblingPrev, siblingPrevAll, siblingPrevUntil:558				if cur == nil {559					// Start with previous sibling of the skip node560					ret = skipNode.PrevSibling561				} else {562					ret = cur.PrevSibling563				}564			case siblingNext, siblingNextAll, siblingNextUntil:565				if cur == nil {566					// Start with next sibling of the skip node567					ret = skipNode.NextSibling568				} else {569					ret = cur.NextSibling570				}571			default:572				panic("Invalid sibling type.")573			}574			if ret == nil || ret.Type == html.ElementNode || st == siblingAllIncludingNonElements {575				return576			}577			// Not a valid node, try again from this one578			cur = ret579		}580	}581	for c := iter(nil); c != nil; c = iter(c) {582		// If this is an ...Until case, test before append (returns true583		// if the until condition is reached)584		if st == siblingNextUntil || st == siblingPrevUntil {585			if untilFunc(c) {586				return587			}588		}...

manipulation.go

Source:manipulation.go

...57// in the set of matched elements, following those rules:58//59// 1) The selector is applied to the root document.60//61// 2) Elements that are part of the document will be moved to the new location.62//63// 3) If there are multiple locations to append to, cloned nodes will be64// appended to all target locations except the last one, which will be moved65// as noted in (2).66func (s *Selection) Append(selector string) *Selection {67	return s.AppendMatcher(compileMatcher(selector))68}69// AppendMatcher appends the elements specified by the matcher to the end of each element70// in the set of matched elements.71//72// This follows the same rules as Selection.Append.73func (s *Selection) AppendMatcher(m Matcher) *Selection {74	return s.AppendNodes(m.MatchAll(s.document.rootNode)...)75}...

getElementsByTagname.go

Source:getElementsByTagname.go

...9	"golang.org/x/net/html"10)11func main() {12	if len(os.Args) < 3 {13		fmt.Println("usage: getElementsByTagName url names")14		os.Exit(1)15	}16	if err := getElementsByTagName(os.Args[1], os.Args[2:]); err != nil {17		fmt.Printf("getElementsByTagName failed: %v\n", err)18		os.Exit(1)19	}20}21func getElementsByTagName(url string, name []string) error {22	resp, err := http.Get(url)23	if err != nil {24		return err25	}26	defer resp.Body.Close()27	if resp.StatusCode != http.StatusOK {28		return fmt.Errorf("Get Failed: %s", resp.Status)29	}30	doc, err := html.Parse(resp.Body)31	if err != nil {32		return err33	}34	node := ElementsByTagName(doc, name...)35	if node == nil {36		fmt.Printf("No element with names given %v found\n", name)37	} else {38		fmt.Printf("Found %d elements with names given %v\n", len(node), name)39	}40	images := ElementsByTagName(doc, "img")41	headings := ElementsByTagName(doc, "h1", "h2", "h3", "h4")42	fmt.Printf("found %d images, %d headings", len(images), len(headings))43	return nil44}45//!+forEachNode46// forEachNode calls the functions pre(x) and post(x) for each node47// x in the tree rooted at n. Both functions are optional.48// pre is called before the children are visited (preorder) and49// post is called after (postorder).50func forEachNode(n *html.Node, pre, post func(n *html.Node)) {51	if pre != nil {52		pre(n)53	}54	for c := n.FirstChild; c != nil; c = c.NextSibling {55		forEachNode(c, pre, post)56	}57	if post != nil {58		post(n)59	}60}61//!-forEachNode62func ElementsByTagName(doc *html.Node, name ...string) []*html.Node {63	var node []*html.Node64	var nameMap = make(map[string]bool, len(name))65	for _, n := range name {66		nameMap[n] = true67	}68	forEachNode(doc, func(n *html.Node) {69		if n.Type == html.ElementNode && nameMap[n.Data] {70			node = append(node, n)71		}72	}, nil)73	return node74}...

Elements

Using AI Code Generation

1import (2func main() {3	doc, err := html.Parse(os.Stdin)4	if err != nil {5		fmt.Fprintf(os.Stderr, "Elements: %v\n", err)6		os.Exit(1)7	}8	for _, element := range Elements(doc) {9		fmt.Println(element)10	}11}12func Elements(n *html.Node) []string {13	var f func(*html.Node)14	f = func(n *html.Node) {15		if n.Type == html.ElementNode {16			elements = append(elements, n.Data)17		}18		for c := n.FirstChild; c != nil; c = c.NextSibling {19			f(c)20		}21	}22	f(n)23}

Elements

Using AI Code Generation

1import (2func main() {3	doc, err := html.Parse(os.Stdin)4	if err != nil {5		fmt.Fprintf(os.Stderr, "Elements: %v\n", err)6		os.Exit(1)7	}8	for _, link := range Elements(doc) {9		fmt.Println(link)10	}11}12func Elements(n *html.Node) []string {13	var visit func(*html.Node)14	visit = func(n *html.Node) {15		if n.Type == html.ElementNode {16			links = append(links, n.Data)17		}18		for c := n.FirstChild; c != nil; c = c.NextSibling {19			visit(c)20		}21	}22	visit(n)23}

Elements

Using AI Code Generation

1import (2func main() {3	f, err := os.Open("1.html")4	if err != nil {5		log.Fatal(err)6	}7	defer f.Close()8	doc, err := html.Parse(f)9	if err != nil {10		log.Fatal(err)11	}12	for _, n := range Elements(doc) {13		fmt.Println(n.Data)14	}15}16func Elements(n *html.Node) []*html.Node {17	if n.Type == html.ElementNode {18		els = append(els, n)19	}20	for c := n.FirstChild; c != nil; c = c.NextSibling {21		els = append(els, Elements(c)...)22	}23}

Elements

Using AI Code Generation

1import (2func main() {3	doc, err := html.Parse(os.Stdin)4	if err != nil {5		fmt.Fprintf(os.Stderr, "Elements: %v\n", err)6		os.Exit(1)7	}8	for _, link := range Elements(doc) {9		fmt.Println(link)10	}11}12func Elements(n *html.Node) []string {13	if n.Type == html.ElementNode {14		links = append(links, n.Data)15	}16	for c := n.FirstChild; c != nil; c = c.NextSibling {17		links = append(links, Elements(c)...)18	}19}

Elements

Using AI Code Generation

1import (2func ElementsByTagName(doc *html.Node, name ...string) []*html.Node {3	visit := func(n *html.Node) {4		if n.Type == html.ElementNode {5			for _, tag := range name {6				if n.Data == tag {7					elements = append(elements, n)8				}9			}10		}11	}12	forEachNode(doc, visit, nil)13}14func forEachNode(n *html.Node, pre, post func(n *html.Node)) {15	if n == nil {16	}17	if pre != nil {18		pre(n)19	}20	for c := n.FirstChild; c != nil; c = c.NextSibling {21		forEachNode(c, pre, post)22	}23	if post != nil {24		post(n)25	}26}27func main() {28	doc, _ := html.Parse(strings.NewReader("<html><head></head><body><h1>hello</h1><h2>world</h2></body></html>"))29	fmt.Printf("%v", ElementsByTagName(doc, "h1", "h2"))30}

Elements

Using AI Code Generation

1import (2func main() {3	doc, err := html.Parse(os.Stdin)4	if err != nil {5		fmt.Println("error in parsing html")6		os.Exit(1)7	}8	for _, link := range Elements(doc) {9		fmt.Println(link)10	}11}12func Elements(n *html.Node) []string {13	if n.Type == html.ElementNode {14		links = append(links, n.Data)15	}16	for c := n.FirstChild; c != nil; c = c.NextSibling {17		links = append(links, Elements(c)...)18	}19}

Elements

Using AI Code Generation

1import (2func main() {3	resp, err := http.Get(url)4	if err != nil {5		log.Fatal(err)6	}7	defer resp.Body.Close()8	doc, err := html.Parse(resp.Body)9	if err != nil {10		log.Fatal(err)11	}12	for _, tag := range ElementsByTagName(doc, "h1", "h2", "h3", "h4", "h5", "h6") {13		fmt.Println(tag.Data)14	}15}16func ElementsByTagName(doc *html.Node, name ...string) []*html.Node {17	if doc == nil {18	}19	if name == nil {20	}21	forEachNode(doc, func(n *html.Node) {22		if n.Type == html.ElementNode {23			for _, tag := range name {24				if tag == n.Data {25					nodes = append(nodes, n)26				}27			}28		}29	}, nil)30}31func forEachNode(n *html.Node, pre, post func(n *html.Node)) {32	if n == nil {33	}34	if pre != nil {35		pre(n)36	}37	for c := n.FirstChild; c != nil; c = c.NextSibling {38		forEachNode(c, pre, post)39	}40	if post != nil {41		post(n)42	}43}

Elements

Using AI Code Generation

1import (2func main() {3	doc, err := html.Parse(os.Stdin)4	if err != nil {5		fmt.Println("error in parsing html")6		os.Exit(1)7	}8	for _, link := range Elements(doc) {9		fmt.Println(link)10	}11}12func Elements(n *html.Node) []string {13	if n.Type == html.ElementNode {14		links = append(links, n.Data)15	}16	for c := n.FirstChild; c != nil; c = c.NextSibling {17		links = append(links, Elements(c)...)18	}19}20	fmt.Println(doc)21}

Elements

Using AI Code Generation

1import (2fnc main() {3	doc, err := html.Parse(os.Stdin)4	if err != nil {5		fmt.Fprintf(os.Stderr, "Elents: %v\", err)6		os.Exi(1)7	}8	for _, link := range Elements(doc, "a") {9=	======f("%s\n", ik)10	}11}12func Elementsn *html.Node, name string) []string {13	if n.Type == html.ElementNode && n.Data == name {14		for _, a := range n.Attr {15			if a.Key == "href" {16				links = appen(links, a.Val)17			}18		}19	}20	fr c := n.FirstChild;  != nil; c = c.NextSibling {21	}22import (23func main() {24	resp, err := http.Get(url)25	if err != nil {26		log.Fatal(err)27	}28	defer resp.Body.Close()29	doc, err := html.Parse(resp.Body)30	if err != nil {31		log.Fatal(err)32	}33	for _, tag := range ElementsByTagName(doc, "h1", "h2", "h3", "h4", "h5", "h6") {34		fmt.Println(tag.Data)35	}36}37func ElementsByTagName(doc *html.Node, name ...string) []*html.Node {38	if doc == nil {39	}40	if name == nil {41	}42	forEachNode(doc, func(n *html.Node) {43		if n.Type == html.ElementNode {44			for _, tag := range name {45				if tag == n.Data {46					nodes = append(nodes, n)47				}48			}49		}50	}, nil)51}52func forEachNode(n *html.Node, pre, post func(n *html.Node)) {53	if n == nil {54	}55	if pre != nil {56		pre(n)57	}58	for c := n.FirstChild; c != nil; c = c.NextSibling {59		forEachNode(c, pre, post)60	}61	if post != nil {62		post(n)63	}64}

Elements

Using AI Code Generation

1import (2func main() {3	resp, err := http.Get(url)4	if err != nil {5		log.Fatal(err)6	}7	doc, err := html.Parse(resp.Body)8	if err != nil {9		log.Fatal(err)10	}11	resp.Body.Close()12	fmt.Println(doc)13}

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