How to use NodeType method of html Package

Best K6 code snippet using html.NodeType

node.go

Source:node.go Github

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...26 return nodes27}28// A Node is an element in the parse tree.29type Node interface {30 Type() NodeType31 Render() string32 NodeName() string33 Dump(int) string34 Children() []Node35}36// NodeType identifies the type of a parse tree node.37type NodeType int38// Type returns itself and provides an easy default implementation39// for embedding in a Node. Embedded in all non-trivial Nodes.40func (t NodeType) Type() NodeType {41 return t42}43func (t NodeType) Dump(level int) string {44 var s []string45 s = append(s, strings.Repeat(" ", level)+t.NodeName())46 for _, child := range t.Children() {47 s = append(s, strings.Repeat(" ", level+1)+child.Dump(level+1))48 }49 return strings.Join(s, "\n")50}51func (t *NodeType) NodeName() string {52 return "TopLevelNode"53}54func (t NodeType) Children() []Node {55 nodes := make([]Node, 0)56 return nodes57}58func (t NodeType) CollectLinks() []LinkNode {59 links := make([]LinkNode, 10)60 return links61}62// Render function, used for overriding default rendering.63type RenderFn func(Node) string64const (65 NodeText NodeType = iota // A plain text66 NodeParagraph // A Paragraph67 NodeEmphasis // An emphasis(strong, em, ...)68 NodeHeading // A heading (h1, h2, ...)69 NodeBr // A link break70 NodeHr // A horizontal rule71 NodeImage // An image72 NodeRefImage // A image reference73 NodeList // A list of ListItems74 NodeListItem // A list item node75 NodeLink // A link(href)76 NodeRefLink // A link reference77 NodeDefLink // A link definition78 NodeTable // A table of NodeRows79 NodeRow // A row of NodeCells80 NodeCell // A table-cell(td)81 NodeCode // A code block(wrapped with pre)82 NodeBlockQuote // A blockquote83 NodeHTML // An inline HTML84 NodeCheckbox // A checkbox85)86// ParagraphNode hold simple paragraph node contains text87// that may be emphasis.88type ParagraphNode struct {89 NodeType90 Pos91 Nodes []Node92 Name string "ParagraphNode"93}94func (n *ParagraphNode) NodeName() (s string) {95 return "ParagraphNode"96}97func (n *ParagraphNode) Children() []Node {98 nodes := make([]Node, len(n.Nodes))99 for i, item := range n.Nodes {100 nodes[i] = item101 }102 return nodes103}104// Render returns the html representation of ParagraphNode105func (n *ParagraphNode) Render() (s string) {106 for _, node := range n.Nodes {107 s += node.Render()108 }109 return wrap("p", s)110}111func (p *parse) newParagraph(pos Pos) *ParagraphNode {112 return &ParagraphNode{NodeType: NodeParagraph, Pos: pos}113}114// TextNode holds plain text.115type TextNode struct {116 NodeType117 Pos118 Text string119}120func (n *TextNode) NodeName() (s string) {121 return "TextNode"122}123// Render returns the string representation of TexNode124func (n *TextNode) Render() string {125 return n.Text126}127func (p *parse) newText(pos Pos, text string) *TextNode {128 return &TextNode{NodeType: NodeText, Pos: pos, Text: p.text(text)}129}130// HTMLNode holds the raw html source.131type HTMLNode struct {132 NodeType133 Pos134 Src string135}136func (n *HTMLNode) NodeName() (s string) {137 return "HTMLNode"138}139// Render returns the src of the HTMLNode140func (n *HTMLNode) Render() string {141 return n.Src142}143func (p *parse) newHTML(pos Pos, src string) *HTMLNode {144 return &HTMLNode{NodeType: NodeHTML, Pos: pos, Src: src}145}146// HrNode represents horizontal rule147type HrNode struct {148 NodeType149 Pos150}151func (n *HrNode) NodeName() (s string) {152 return "HrNode"153}154// Render returns the html representation of hr.155func (n *HrNode) Render() string {156 return "<hr>"157}158func (p *parse) newHr(pos Pos) *HrNode {159 return &HrNode{NodeType: NodeHr, Pos: pos}160}161// BrNode represents a link-break element.162type BrNode struct {163 NodeType164 Pos165}166func (n *BrNode) NodeName() (s string) {167 return "BrNode"168}169// Render returns the html representation of line-break.170func (n *BrNode) Render() string {171 return "<br>"172}173func (p *parse) newBr(pos Pos) *BrNode {174 return &BrNode{NodeType: NodeBr, Pos: pos}175}176// EmphasisNode holds plain-text wrapped with style.177// (strong, em, del, code)178type EmphasisNode struct {179 NodeType180 Pos181 Style itemType182 Nodes []Node183}184func (n *EmphasisNode) NodeName() (s string) {185 return "EmphasisNode"186}187// Tag return the tagName based on the Style field.188func (n *EmphasisNode) Tag() (s string) {189 switch n.Style {190 case itemStrong:191 s = "strong"192 case itemItalic:193 s = "em"194 case itemStrike:195 s = "del"196 case itemCode:197 s = "code"198 }199 return200}201// Return the html representation of emphasis text.202func (n *EmphasisNode) Render() string {203 var s string204 for _, node := range n.Nodes {205 s += node.Render()206 }207 return wrap(n.Tag(), s)208}209func (p *parse) newEmphasis(pos Pos, style itemType) *EmphasisNode {210 return &EmphasisNode{NodeType: NodeEmphasis, Pos: pos, Style: style}211}212// HeadingNode holds heaing element with specific level(1-6).213type HeadingNode struct {214 NodeType215 Pos216 Level int217 Text string218 Nodes []Node219}220func (n *HeadingNode) NodeName() (s string) {221 return "HeadingNode"222}223// Render returns the html representation based on heading level.224func (n *HeadingNode) Render() (s string) {225 for _, node := range n.Nodes {226 s += node.Render()227 }228 re := regexp.MustCompile(`[^\w]+`)229 id := re.ReplaceAllString(n.Text, "-")230 // ToLowerCase231 id = strings.ToLower(id)232 return fmt.Sprintf("<%[1]s id=\"%s\">%s</%[1]s>", "h"+strconv.Itoa(n.Level), id, s)233}234func (p *parse) newHeading(pos Pos, level int, text string) *HeadingNode {235 return &HeadingNode{NodeType: NodeHeading, Pos: pos, Level: level, Text: p.text(text)}236}237// Code holds CodeBlock node with specific lang field.238type CodeNode struct {239 NodeType240 Pos241 Lang, Text string242}243func (n *CodeNode) NodeName() (s string) {244 return "CodeNode"245}246// Return the html representation of codeBlock247func (n *CodeNode) Render() string {248 var attr string249 if n.Lang != "" {250 attr = fmt.Sprintf(" class=\"lang-%s\"", n.Lang)251 }252 code := fmt.Sprintf("<%[1]s%s>%s</%[1]s>", "code", attr, n.Text)253 return wrap("pre", code)254}255func (p *parse) newCode(pos Pos, lang, text string) *CodeNode {256 // DRY: see `escape()` below257 text = strings.NewReplacer("<", "&lt;", ">", "&gt;", "\"", "&quot;", "&", "&amp;").Replace(text)258 return &CodeNode{NodeType: NodeCode, Pos: pos, Lang: lang, Text: text}259}260// Link holds a tag with optional title261type LinkNode struct {262 NodeType263 Pos264 Title, Href string265 Nodes []Node266}267func (n *LinkNode) NodeName() (s string) {268 return n.Href269}270// Return the html representation of link node271func (n *LinkNode) Render() (s string) {272 for _, node := range n.Nodes {273 s += node.Render()274 }275 attrs := fmt.Sprintf("href=\"%s\"", n.Href)276 if n.Title != "" {277 attrs += fmt.Sprintf(" title=\"%s\"", n.Title)278 }279 return fmt.Sprintf("<a %s>%s</a>", attrs, s)280}281func (p *parse) newLink(pos Pos, title, href string, nodes ...Node) *LinkNode {282 return &LinkNode{NodeType: NodeLink, Pos: pos, Title: p.text(title), Href: p.text(href), Nodes: nodes}283}284// RefLink holds link with refrence to link definition285type RefNode struct {286 NodeType287 Pos288 tr *parse289 Text, Ref, Raw string290 Nodes []Node291}292func (n *RefNode) NodeName() (s string) {293 return "RefNode"294}295// rendering based type296func (n *RefNode) Render() string {297 var node Node298 ref := strings.ToLower(n.Ref)299 if l, ok := n.tr.links[ref]; ok {300 if n.Type() == NodeRefLink {301 node = n.tr.newLink(n.Pos, l.Title, l.Href, n.Nodes...)302 } else {303 node = n.tr.newImage(n.Pos, l.Title, l.Href, n.Text)304 }305 } else {306 node = n.tr.newText(n.Pos, n.Raw)307 }308 return node.Render()309}310// newRefLink create new RefLink that suitable for link311func (p *parse) newRefLink(typ itemType, pos Pos, raw, ref string, text []Node) *RefNode {312 return &RefNode{NodeType: NodeRefLink, Pos: pos, tr: p.root(), Raw: raw, Ref: ref, Nodes: text}313}314// newRefImage create new RefLink that suitable for image315func (p *parse) newRefImage(typ itemType, pos Pos, raw, ref, text string) *RefNode {316 return &RefNode{NodeType: NodeRefImage, Pos: pos, tr: p.root(), Raw: raw, Ref: ref, Text: text}317}318// DefLinkNode refresent single reference to link-definition319type DefLinkNode struct {320 NodeType321 Pos322 Name, Href, Title string323}324func (n *DefLinkNode) NodeName() (s string) {325 return "DefLinkNode"326}327// Deflink have no representation(Transparent node)328func (n *DefLinkNode) Render() string {329 return ""330}331func (p *parse) newDefLink(pos Pos, name, href, title string) *DefLinkNode {332 return &DefLinkNode{NodeType: NodeLink, Pos: pos, Name: name, Href: href, Title: title}333}334// ImageNode represents an image element with optional alt and title attributes.335type ImageNode struct {336 NodeType337 Pos338 Title, Src, Alt string339}340func (n *ImageNode) NodeName() (s string) {341 return n.Src342}343// Render returns the html representation on image node344func (n *ImageNode) Render() string {345 attrs := fmt.Sprintf("src=\"%s\" alt=\"%s\"", n.Src, n.Alt)346 if n.Title != "" {347 attrs += fmt.Sprintf(" title=\"%s\"", n.Title)348 }349 return fmt.Sprintf("<img %s>", attrs)350}351func (p *parse) newImage(pos Pos, title, src, alt string) *ImageNode {352 return &ImageNode{NodeType: NodeImage, Pos: pos, Title: p.text(title), Src: p.text(src), Alt: p.text(alt)}353}354// ListNode holds list items nodes in ordered or unordered states.355type ListNode struct {356 NodeType357 Pos358 Ordered bool359 Items []*ListItemNode360}361func (n *ListNode) NodeName() string {362 return "ListNode"363}364func (n *ListNode) Children() []Node {365 nodes := make([]Node, len(n.Items))366 for i, item := range n.Items {367 nodes[i] = item368 }369 return nodes370}371func (n *ListNode) append(item *ListItemNode) {372 n.Items = append(n.Items, item)373}374// Render returns the html representation of orderd(ol) or unordered(ul) list.375func (n *ListNode) Render() (s string) {376 tag := "ul"377 if n.Ordered {378 tag = "ol"379 }380 for _, item := range n.Items {381 s += "\n" + item.Render()382 }383 s += "\n"384 return wrap(tag, s)385}386func (p *parse) newList(pos Pos, ordered bool) *ListNode {387 return &ListNode{NodeType: NodeList, Pos: pos, Ordered: ordered}388}389// ListItem represents single item in ListNode that may contains nested nodes.390type ListItemNode struct {391 NodeType392 Pos393 Nodes []Node394}395func (n *ListItemNode) NodeName() string {396 return "ListItemNode"397}398func (n *ListItemNode) Children() []Node {399 nodes := make([]Node, len(n.Nodes))400 for i, item := range n.Nodes {401 nodes[i] = item402 }403 return nodes404}405func (l *ListItemNode) append(n Node) {406 l.Nodes = append(l.Nodes, n)407}408// Render returns the html representation of list-item409func (l *ListItemNode) Render() (s string) {410 for _, node := range l.Nodes {411 s += node.Render()412 }413 return wrap("li", s)414}415func (p *parse) newListItem(pos Pos) *ListItemNode {416 return &ListItemNode{NodeType: NodeListItem, Pos: pos}417}418// TableNode represents table element contains head and body419type TableNode struct {420 NodeType421 Pos422 Rows []*RowNode423}424func (n *TableNode) NodeName() (s string) {425 return "TableNode"426}427func (n *TableNode) append(row *RowNode) {428 n.Rows = append(n.Rows, row)429}430func (n *TableNode) Children() []Node {431 nodes := make([]Node, len(n.Rows))432 for i, row := range n.Rows {433 nodes[i] = row434 }435 return nodes436}437// Render returns the html representation of a table438func (n *TableNode) Render() string {439 var s string440 for i, row := range n.Rows {441 s += "\n"442 switch i {443 case 0:444 s += wrap("thead", "\n"+row.Render()+"\n")445 case 1:446 s += "<tbody>\n"447 fallthrough448 default:449 s += row.Render()450 }451 }452 s += "\n</tbody>\n"453 return wrap("table", s)454}455func (p *parse) newTable(pos Pos) *TableNode {456 return &TableNode{NodeType: NodeTable, Pos: pos}457}458// RowNode represnt tr that holds list of cell-nodes459type RowNode struct {460 NodeType461 Pos462 Cells []*CellNode463}464func (n *RowNode) NodeName() (s string) {465 return "RowNode"466}467func (r *RowNode) append(cell *CellNode) {468 r.Cells = append(r.Cells, cell)469}470func (n *RowNode) Children() []Node {471 nodes := make([]Node, len(n.Cells))472 for i, cell := range n.Cells {473 nodes[i] = cell474 }475 return nodes476}477// Render returns the html representation of table-row478func (r *RowNode) Render() string {479 var s string480 for _, cell := range r.Cells {481 s += "\n" + cell.Render()482 }483 s += "\n"484 return wrap("tr", s)485}486func (p *parse) newRow(pos Pos) *RowNode {487 return &RowNode{NodeType: NodeRow, Pos: pos}488}489// AlignType identifies the aligment-type of specfic cell.490type AlignType int491// Align returns itself and provides an easy default implementation492// for embedding in a Node.493func (t AlignType) Align() AlignType {494 return t495}496// Alignment497const (498 None AlignType = iota499 Right500 Left501 Center502)503// Cell types504const (505 Header = iota506 Data507)508// CellNode represents table-data/cell that holds simple text(may be emphasis)509// Note: the text in <th> elements are bold and centered by default.510type CellNode struct {511 NodeType512 Pos513 AlignType514 Kind int515 Nodes []Node516}517func (n *CellNode) NodeName() (s string) {518 return "CellNode"519}520// Render returns the html reprenestation of table-cell521func (c *CellNode) Render() string {522 var s string523 tag := "td"524 if c.Kind == Header {525 tag = "th"526 }527 for _, node := range c.Nodes {528 s += node.Render()529 }530 return fmt.Sprintf("<%[1]s%s>%s</%[1]s>", tag, c.Style(), s)531}532// Style return the cell-style based on alignment field533func (c *CellNode) Style() string {534 s := " style=\"text-align:"535 switch c.Align() {536 case Right:537 s += "right\""538 case Left:539 s += "left\""540 case Center:541 s += "center\""542 default:543 s = ""544 }545 return s546}547func (p *parse) newCell(pos Pos, kind int, align AlignType) *CellNode {548 return &CellNode{NodeType: NodeCell, Pos: pos, Kind: kind, AlignType: align}549}550// BlockQuote represents block-quote tag.551type BlockQuoteNode struct {552 NodeType553 Pos554 Nodes []Node555}556func (n *BlockQuoteNode) NodeName() (s string) {557 return "BlockQuodeNode"558}559// Render returns the html representation of BlockQuote560func (n *BlockQuoteNode) Render() string {561 var s string562 for _, node := range n.Nodes {563 s += node.Render()564 }565 return wrap("blockquote", s)566}567func (p *parse) newBlockQuote(pos Pos) *BlockQuoteNode {568 return &BlockQuoteNode{NodeType: NodeBlockQuote, Pos: pos}569}570// CheckboxNode represents checked and unchecked checkbox tag.571// Used in task lists.572type CheckboxNode struct {573 NodeType574 Pos575 Checked bool576}577func (n *CheckboxNode) NodeName() (s string) {578 return "CheckboxNode"579}580// Render returns the html representation of checked and unchecked CheckBox.581func (n *CheckboxNode) Render() string {582 s := "<input type=\"checkbox\""583 if n.Checked {584 s += " checked"585 }586 return s + ">"587}588func (p *parse) newCheckbox(pos Pos, checked bool) *CheckboxNode {589 return &CheckboxNode{NodeType: NodeCheckbox, Pos: pos, Checked: checked}590}591// Wrap text with specific tag.592func wrap(tag, body string) string {593 return fmt.Sprintf("<%[1]s>%s</%[1]s>", tag, body)594}595// Group all text configuration in one place(escaping, smartypants, etc..)596func (p *parse) text(input string) string {597 opts := p.root().options598 if opts.Smartypants {599 input = smartypants(input)600 }601 if opts.Fractions {602 input = smartyfractions(input)603 }...

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1import (2func main() {3 doc, err := html.Parse(os.Stdin)4 if err != nil {5 fmt.Fprintf(os.Stderr, "findlinks1: %v6 os.Exit(1)7 }8 for _, link := range visit(nil, doc) {9 fmt.Println(link)10 }11}12func visit(links []string, n *html.Node) []string {13 if n.Type == html.ElementNode && n.Data == "a" {14 for _, a := range n.Attr {15 if a.Key == "href" {16 links = append(links, a.Val)17 }18 }19 }20 for c := n.FirstChild; c != nil; c = c.NextSibling {21 links = visit(links, c)22 }23}24import (25func main() {26 doc, err := html.Parse(os.Stdin)27 if err != nil {28 fmt.Fprintf(os.Stderr, "findlinks1: %v29 os.Exit(1)30 }31 for _, link := range visit(nil, doc) {32 fmt.Println(link)33 }34}35func visit(links []string, n *html.Node) []string {36 if n.Type == html.ElementNode && n.Data == "a" {37 for _, a := range n.Attr {38 if a.Key == "href" {39 links = append(links, a.Val)40 }41 }42 }43 for c := n.FirstChild; c != nil; c = c.NextSibling {44 links = visit(links, c)45 }46}47import (48func main() {49 doc, err := html.Parse(os.Stdin)50 if err != nil {51 fmt.Fprintf(os.Stderr, "findlinks1: %v52 os.Exit(1)53 }54 for _, link := range visit(nil, doc) {55 fmt.Println(link)56 }57}58func visit(links

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NodeType

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1import (2func main() {3 doc, err := html.Parse(os.Stdin)4 if err != nil {5 fmt.Fprintf(os.Stderr, "findlinks1: %v6 os.Exit(1)7 }8 for _, link := range visit(nil, doc) {9 fmt.Println(link)10 }11}12func visit(links []string, n *html.Node) []string {13 if n.Type == html.ElementNode && n.Data == "a" {14 for _, a := range n.Attr {15 if a.Key == "href" {16 links = append(links, a.Val)17 }18 }19 }20 for c := n.FirstChild; c != nil; c = c.NextSibling {21 links = visit(links, c)22 }23}24import (25func main() {26 doc, err := html.Parse(os.Stdin)27 if err != nil {28 fmt.Fprintf(os.Stderr, "findlinks1: %v29 os.Exit(1)30 }31 for _, link := range visit(nil, doc) {32 fmt.Println(link)33 }34}35func visit(links []string, n *html.Node) []string {36 if n.Type == html.ElementNode && n.Data == "a" {37 for _, a := range n.Attr {38 if a.Key == "href" {39 links = append(links, a.Val)40 }41 }42 }43 for c := n.FirstChild; c != nil; c = c.NextSibling {44 links = visit(links, c)45 }46}

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1import (2func main() {3 doc, err := html.Parse(strings.NewReader("<html><head></head><body></body></html>"))4 if err != nil {5 fmt.Printf("Error while parsing html %v", err)6 }7 fmt.Printf("Node Type is %v", doc.Type)8}9import (10func main() {11 doc, err := html.Parse(strings.NewReader("<html><head></head><body></body></html>"))12 if err != nil {13 fmt.Printf("Error while parsing html %v", err)14 }15 fmt.Printf("Node Data is %v", doc.Data)16}17import (18func main() {19 doc, err := html.Parse(strings.NewReader("<html><head></head><body></body></html>"))20 if err != nil {21 fmt.Printf("Error while parsing html %v", err)22 }23 fmt.Printf("Node Attrs is %v", doc.Attr)24}25import (26func main() {27 doc, err := html.Parse(strings.NewReader("<html><head></head><body></body></html>"))28 if err != nil {29 fmt.Printf("Error while parsing html %v", err)30 }31 fmt.Printf("Node FirstChild is %v", doc.FirstChild)32}33import (34func main() {35 doc, err := html.Parse(strings.NewReader("<html><head></head><body></body></html>"))

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1import (2func main() {3 if err != nil {4 panic(err)5 }6 if resp.StatusCode != http.StatusOK {7 resp.Body.Close()8 }9 doc, err := html.Parse(resp.Body)10 resp.Body.Close()11 if err != nil {12 panic(err)13 }14 forEachNode(doc, startElement, endElement)15}16func forEachNode(n *html.Node, pre, post func(n *html.Node)) {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 startElement(n *html.Node) {28 if n.Type == html.ElementNode {29 fmt.Printf("%*s<%s>30 }31}32func endElement(n *html.Node) {33 if n.Type == html.ElementNode {

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1import (2func main() {3 if err != nil {4 fmt.Fprintf(os.Stderr, "fetch: %v5 os.Exit(1)6 }7 doc, err := html.Parse(resp.Body)8 resp.Body.Close()9 if err != nil {10 fmt.Fprintf(os.Stderr, "findlinks1: %v11 os.Exit(1)12 }13 for _, link := range visit(nil, doc) {14 fmt.Println(link)15 }16}17func visit(links []string, n *html.Node) []string {18 if n.Type == html.ElementNode {19 fmt.Println(n.Data)20 }21 for c := n.FirstChild; c != nil; c = c.NextSibling {22 visit(links, c)23 }24}

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1import (2func main() {3 if err != nil {4 fmt.Println(err)5 }6 defer resp.Body.Close()7 doc, err := html.Parse(resp.Body)8 if err != nil {9 fmt.Println(err)10 }11 fmt.Println(doc.Type)12}13import (14func main() {15 if err != nil {16 fmt.Println(err)17 }18 defer resp.Body.Close()19 doc, err := html.Parse(resp.Body)20 if err != nil {21 fmt.Println(err)22 }23 fmt.Println(doc.Data)24}25import (26func main() {27 if err != nil {28 fmt.Println(err)29 }30 defer resp.Body.Close()

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1import (2func main() {3 doc, _ := html.Parse(strings.NewReader("<html><head></head><body></body></html>"))4 fmt.Println(doc.Type)5}6html.Parse() function

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1import (2func main() {3doc, _ := html.Parse(strings.NewReader("<html><body><h1>Hello</h1></body></html>"))4fmt.Println(doc.Type)5}6import (7func main() {8doc, _ := html.Parse(strings.NewReader("<html><body><h1>Hello</h1></body></html>"))9fmt.Println(doc.Data)10}11import (12func main() {13doc, _ := html.Parse(strings.NewReader("<html><body><h1>Hello</h1></body></html>"))14fmt.Println(doc.Attr)15}16import (17func main() {18doc, _ := html.Parse(strings.NewReader("<html><body><h1>Hello</h1></body></html>"))19fmt.Println(doc.FirstChild)20}21import (22func main() {23doc, _ := html.Parse(strings.NewReader("<html><body><h1>Hello</h1></body></html>"))24fmt.Println(doc.LastChild)25}26import (27func main() {28doc, _ := html.Parse(strings.NewReader("<html><body><h1>Hello</h1></body></html>"))29fmt.Println(doc.NextSibling)30}31import (32func main() {33doc, _ := html.Parse(strings.NewReader("<html><body><h1>Hello</h1></body></html>"))34fmt.Println(doc.Parent)35}

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