Examples of org.jsoup.select.Elements.first()

org.jsoup.select.Elements.first()
Get the first matched element. @return The first matched element, or null if contents is empty;

        Document doc = Jsoup.parse(h);
        Elements ol = doc.select("ul"); // should NOT have created a default ul.
        assertEquals(0, ol.size());
        Elements lis = doc.select("li");
        assertEquals(2, lis.size());
        assertEquals("body", lis.first().parent().tagName());


        // no fiddling with non-implicit lists
        String h2 = "<ol><li><p>Point the first<li><p>Point the second";
        Document doc2 = Jsoup.parse(h2);

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    @Test public void handlesUnknownTags() {
        String h = "<div><foo title=bar>Hello<foo title=qux>there</foo></div>";
        Document doc = Jsoup.parse(h);
        Elements foos = doc.select("foo");
        assertEquals(2, foos.size());
        assertEquals("bar", foos.first().attr("title"));
        assertEquals("qux", foos.last().attr("title"));
        assertEquals("there", foos.last().text());
    }


    @Test public void handlesUnknownInlineTags() {

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    }


    @Test public void strictAttributeUnescapes() {
        String html = "<a id=1 href='?foo=bar&mid&lt=true'>One</a> <a id=2 href='?foo=bar&lt;qux&lg=1'>Two</a>";
        Elements els = Jsoup.parse(html).select("a");
        assertEquals("?foo=bar&mid&lt=true", els.first().attr("href"));
        assertEquals("?foo=bar<qux&lg=1", els.last().attr("href"));
    }


    @Test public void moreAttributeUnescapes() {
        String html = "<a href='&wr_id=123&mid-size=true&ok=&wr'>Check</a>";

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    }


    @Test public void moreAttributeUnescapes() {
        String html = "<a href='&wr_id=123&mid-size=true&ok=&wr'>Check</a>";
        Elements els = Jsoup.parse(html).select("a");
        assertEquals("&wr_id=123&mid-size=true&ok=&wr", els.first().attr("href"));
    }
}

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    @Test public void getNamespacedElementsByTag() {
        Document doc = Jsoup.parse("<div><abc:def id=1>Hello</abc:def></div>");
        Elements els = doc.getElementsByTag("abc:def");
        assertEquals(1, els.size());
        assertEquals("1", els.first().id());
        assertEquals("abc:def", els.first().tagName());
    }


    @Test public void testGetElementById() {
        Document doc = Jsoup.parse(reference);

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    @Test public void getNamespacedElementsByTag() {
        Document doc = Jsoup.parse("<div><abc:def id=1>Hello</abc:def></div>");
        Elements els = doc.getElementsByTag("abc:def");
        assertEquals(1, els.size());
        assertEquals("1", els.first().id());
        assertEquals("abc:def", els.first().tagName());
    }


    @Test public void testGetElementById() {
        Document doc = Jsoup.parse(reference);
        Element div = doc.getElementById("div1");

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    @Test public void testGetElementsWithAttributeDash() {
        Document doc = Jsoup.parse("<meta http-equiv=content-type value=utf8 id=1> <meta name=foo content=bar id=2> <div http-equiv=content-type value=utf8 id=3>");
        Elements meta = doc.select("meta[http-equiv=content-type], meta[charset]");
        assertEquals(1, meta.size());
        assertEquals("1", meta.first().id());
    }


    @Test public void testGetElementsWithAttributeValue() {
        Document doc = Jsoup.parse("<div style='bold'><p><p><b style></b></p></div>");
        List<Element> els = doc.getElementsByAttributeValue("style", "bold");

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        Document doc = Jsoup.parse("<div><p>Hello</p><p></p></div>");
        Element div = doc.select("div").first();
        Elements ps = doc.select("p");


        assertTrue(div.hasText());
        assertTrue(ps.first().hasText());
        assertFalse(ps.last().hasText());
    }


    @Test public void dataset() {
        Document doc = Jsoup.parse("<div id=1 data-name=jsoup class=new data-package=jar>Hello</div><p id=2>Hello</p>");

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    public void insertChildrenAsCopy() {
        Document doc = Jsoup.parse("<div id=1>Text <p>One</p> Text <p>Two</p></div><div id=2></div>");
        Element div1 = doc.select("div").get(0);
        Element div2 = doc.select("div").get(1);
        Elements ps = doc.select("p").clone();
        ps.first().text("One cloned");
        div2.insertChildren(-1, ps);


        assertEquals(4, div1.childNodeSize()); // not moved -- cloned
        assertEquals(2, div2.childNodeSize());
        assertEquals("<div id=\"1\">Text <p>One</p> Text <p>Two</p></div><div id=\"2\"><p>One cloned</p><p>Two</p></div>",

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    }


    // merge multiple <head> or <body> contents into one, delete the remainder, and ensure they are owned by <html>
    private void normaliseStructure(String tag, Element htmlEl) {
        Elements elements = this.getElementsByTag(tag);
        Element master = elements.first(); // will always be available as created above if not existent
        if (elements.size() > 1) { // dupes, move contents to master
            List<Node> toMove = new ArrayList<Node>();
            for (int i = 1; i < elements.size(); i++) {
                Node dupe = elements.get(i);
                for (Node node : dupe.childNodes)

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