Source

Scrollspy

“Bootstrap” nawigasiýasyny awtomatiki usulda täzeläň ýa-da häzirki baglanyşykda haýsy baglanyşygyň işjeňdigini görkezmek üçin aýlaw ýagdaýyna esaslanýan topar böleklerini sanaň.

Bu nähili işleýär

Scrollspy-nyň dogry işlemegi üçin birnäçe talaplar bar:

  • JavaScriptimizi çeşmeden gurýan bolsaňyz, talap edýärutil.js .
  • “Bootstrap nav” komponentinde ýa-da sanaw toparynda ulanylmaly .
  • Scrollspy position: relative;içalyçylyk edýän elementiňize, adatça <body>.
  • Ondan başga elementlere içalyçylyk edeniňizde , toplumyň we ulanyljakdygyna <body>göz ýetiriň .heightoverflow-y: scroll;
  • Gämi ( <a>) talap edilýär we şonuň bilen bir elementi görkezmeli id.

Üstünlikli durmuşa geçirilende, deňiz ýa-da sanaw toparyňyz .activedegişli maksatlara esaslanyp synpy bir elementden beýlekisine geçirer.

Deňiz panelinde mysal

Deňiz paneliniň aşagyndaky meýdany aýlaň we işjeň synp üýtgemegine tomaşa ediň. Açylýan zatlar hem görkeziler.

@fat

Mahabat leggings açary, ertirlik nahary sungat partiýasy dolor zähmeti. “Pitchfork yr enim lo-fi” kwi satmazdan ozal. “Tumblr” ferma-stoluň üstünde welosiped hukugy näme bolsa-da. Anim keffiyeh kardigan. Velit seitan mcsweeney-iň surat stendinde 3 möjek aýy irure. Cosby switer lomo jean şortikleri, williamsburg hoodie minim qui, belki-de siz olar hakda eşitmedik bolsaňyz we kardigan ynam gaznasy culpa biodiesel wes anderson estetiki. Nihil tatuirovka eden akusamus, krediti biodiesel keffiyeh senetçi ullamco netijesi.

@mdo

Veniam marfa mustache skateboard, adipisicing fugiat velit pitchfork beard. Freegan beard aliqua cupidatat mcsweeney's vero. Cupidatat four loko nisi, ea helvetica nulla carles. Tattooed cosby sweater food truck, mcsweeney's quis non freegan vinyl. Lo-fi wes anderson +1 sartorial. Carles non aesthetic exercitation quis gentrify. Brooklyn adipisicing craft beer vice keytar deserunt.

one

Occaecat commodo aliqua delectus. Fap craft beer deserunt skateboard ea. Lomo bicycle rights adipisicing banh mi, velit ea sunt next level locavore single-origin coffee in magna veniam. High life id vinyl, echo park consequat quis aliquip banh mi pitchfork. Vero VHS est adipisicing. Consectetur nisi DIY minim messenger bag. Cred ex in, sustainable delectus consectetur fanny pack iphone.

two

In incididunt echo park, officia deserunt mcsweeney's proident master cleanse thundercats sapiente veniam. Excepteur VHS elit, proident shoreditch +1 biodiesel laborum craft beer. Single-origin coffee wayfarers irure four loko, cupidatat terry richardson master cleanse. Assumenda you probably haven't heard of them art party fanny pack, tattooed nulla cardigan tempor ad. Proident wolf nesciunt sartorial keffiyeh eu banh mi sustainable. Elit wolf voluptate, lo-fi ea portland before they sold out four loko. Locavore enim nostrud mlkshk brooklyn nesciunt.

three

Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.

“Keytar twee” blogy, nahar ýük maşyny näme bolsa-da. Sapiente synth id çaklama. “Locavore sed helvetica cliche irony”, ýyldyrym çakmalary, belki-de, “glýutensiz lo-fi fap alikipi” sebäpli eşitmediňiz. Satylmanka zähmet çekiň, terri Riçardson proident ertirlik nahary neskiunt quis cosby switer pariatur keffiyeh ut helvetica senetçisi. Kardigan senet piwo seitan taýýar mahmal. VHS chambray laboris tempor veniam. Anim mollit minim commodo ullamco ýyldyrymlary.

<nav id="navbar-example2" class="navbar navbar-light bg-light">
  <a class="navbar-brand" href="#">Navbar</a>
  <ul class="nav nav-pills">
    <li class="nav-item">
      <a class="nav-link" href="#fat">@fat</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" href="#mdo">@mdo</a>
    </li>
    <li class="nav-item dropdown">
      <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Dropdown</a>
      <div class="dropdown-menu">
        <a class="dropdown-item" href="#one">one</a>
        <a class="dropdown-item" href="#two">two</a>
        <div role="separator" class="dropdown-divider"></div>
        <a class="dropdown-item" href="#three">three</a>
      </div>
    </li>
  </ul>
</nav>
<div data-spy="scroll" data-target="#navbar-example2" data-offset="0">
  <h4 id="fat">@fat</h4>
  <p>...</p>
  <h4 id="mdo">@mdo</h4>
  <p>...</p>
  <h4 id="one">one</h4>
  <p>...</p>
  <h4 id="two">two</h4>
  <p>...</p>
  <h4 id="three">three</h4>
  <p>...</p>
</div>

Içindäki deňiz bilen mysal

Scrollspy höwürtgelenen .navs bilen hem işleýär. Höwürtgelenen .navbolsa .active, ene-atasy hem bolar .active. Deňiz paneliniň gapdalyndaky meýdany aýlaň we işjeň synp üýtgemegine tomaşa ediň.

1-nji bent

Mysal üçin, täjirçilik adipis maşklary aute excepteur occaecat ullamco duis aliqua id magna ullamco eu. Aute ipsum ipsum ullamco cillum consectetur ut we aute consectetur labour. “Fugiat laborum incididunt tempor eu” netijesi bilen dolore proident. “Aliqua et aliqua officia quis et incididunt voluptate” animasiýa däl “dolore” we “deserunt mollit dolore” bilen gyzyklanýar. “Aliquip nulla enim veniam fugiat id cupidatat nulla elit cupidatat commodo velit ut eiusmod cupidatat elit dolore”.

1-1-nji bent

Amet tempor mollit aliquip pariatur excepteur commodo do ea cillum commodo Lorem et occaecat elit qui we ş.m. Aliquip labore ex ex esse voluptate occaecat Lorem ullamco deserunt. Aliqua cillum excepteur irure netijesi id quis ea. Proident ullamco aute magna pariatur nostrud zähmetini oturyň. “Reprehenderit aliqua commodo eiusmod aliquip est do duis amet proident magna consectetur” netijesi we komod fugiat däl. Enim alikip maşklary ullamco adipisising voluptate excepteur minim maşk minim minimod commodo adipis maşk officia nisi adipisising. Anim id duis qui netijesi, sint dolor elit cillum anim et fugiat.

2-2-nji bent

Cillum nisi deserunt magna eiusmod qui eiusmod velit voluptate pariatur laborum sunt enim. Irure laboris mollit consequat incididunt sint et culpa culpa incididunt adipisicing magna magna occaecat. Nulla ipsum cillum eiusmod sint elit excepteur ea labore enim consectetur in labore anim. Proident ullamco ipsum esse elit ut Lorem eiusmod dolor et eiusmod. Anim occaecat nulla in non consequat eiusmod velit incididunt.

Item 2

Quis magna Lorem anim amet ipsum do mollit sit cillum voluptate ex nulla tempor. Laborum consequat non elit enim exercitation cillum aliqua consequat id aliqua. Esse ex consectetur mollit voluptate est in duis laboris ad sit ipsum anim Lorem. Incididunt veniam velit elit elit veniam Lorem aliqua quis ullamco deserunt sit enim elit aliqua esse irure. Laborum nisi sit est tempor laborum mollit labore officia laborum excepteur commodo non commodo dolor excepteur commodo. Ipsum fugiat ex est consectetur ipsum commodo tempor sunt in proident.

Item 3

Quis anim sit do amet fugiat dolor velit sit ea ea do reprehenderit culpa duis. Nostrud aliqua ipsum fugiat minim proident occaecat excepteur aliquip culpa aute tempor reprehenderit. Deserunt tempor mollit elit ex pariatur dolore velit fugiat mollit culpa irure ullamco est ex ullamco excepteur.

Item 3-1

Deserunt quis elit Lorem eiusmod amet enim enim amet minim Lorem proident nostrud. Ea id dolore anim exercitation aute fugiat labore voluptate cillum do laboris labore. Ex velit exercitation nisi enim labore reprehenderit labore nostrud ut ut. Esse officia sunt duis aliquip ullamco tempor eiusmod deserunt irure nostrud irure. Ullamco proident veniam laboris ea consectetur magna sunt ex exercitation aliquip minim enim culpa occaecat exercitation. Est tempor excepteur aliquip laborum consequat do deserunt laborum esse eiusmod irure proident ipsum esse qui.

Item 3-2

“Labore sit culpa commodo elit adipisising” alikip elit proident voluptate minim mollit nostrud aute reprehenderit do. “Mollit” -den başga-da “Lorem ipsum anim commodo sint labore Lorem” velit incididunt maşklarynda. “Occaecat consectetur nisi”, “occaecat proident minim enim sunt reprender” maşklary “cupidatat et do officia”. Aliquip netijesi mahabat zähmeti. “Vniam culpa aliqua excepteur elit magna fugiat eiusmod amet officia” -da pariatur tempor proidentini oturyň.

<nav id="navbar-example3" class="navbar navbar-light bg-light">
  <a class="navbar-brand" href="#">Navbar</a>
  <nav class="nav nav-pills flex-column">
    <a class="nav-link" href="#item-1">Item 1</a>
    <nav class="nav nav-pills flex-column">
      <a class="nav-link ml-3 my-1" href="#item-1-1">Item 1-1</a>
      <a class="nav-link ml-3 my-1" href="#item-1-2">Item 1-2</a>
    </nav>
    <a class="nav-link" href="#item-2">Item 2</a>
    <a class="nav-link" href="#item-3">Item 3</a>
    <nav class="nav nav-pills flex-column">
      <a class="nav-link ml-3 my-1" href="#item-3-1">Item 3-1</a>
      <a class="nav-link ml-3 my-1" href="#item-3-2">Item 3-2</a>
    </nav>
  </nav>
</nav>

<div data-spy="scroll" data-target="#navbar-example3" data-offset="0">
  <h4 id="item-1">Item 1</h4>
  <p>...</p>
  <h5 id="item-1-1">Item 1-1</h5>
  <p>...</p>
  <h5 id="item-1-2">Item 2-2</h5>
  <p>...</p>
  <h4 id="item-2">Item 2</h4>
  <p>...</p>
  <h4 id="item-3">Item 3</h4>
  <p>...</p>
  <h5 id="item-3-1">Item 3-1</h5>
  <p>...</p>
  <h5 id="item-3-2">Item 3-2</h5>
  <p>...</p>
</div>

Sanaw topary bilen mysal

Scrollspy .list-groups bilen hem işleýär. Sanaw toparynyň gapdalyndaky meýdany aýlaň we işjeň synp üýtgemegine tomaşa ediň.

1-nji bent

Mysal üçin, täjirçilik adipis maşklary aute excepteur occaecat ullamco duis aliqua id magna ullamco eu. Aute ipsum ipsum ullamco cillum consectetur ut we aute consectetur labour. “Fugiat laborum incididunt tempor eu” netijesi bilen dolore proident. “Aliqua et aliqua officia quis et incididunt voluptate” animasiýa däl “dolore” we “deserunt mollit dolore” bilen gyzyklanýar. “Aliquip nulla enim veniam fugiat id cupidatat nulla elit cupidatat commodo velit ut eiusmod cupidatat elit dolore”.

2-nji bent

“Lorem” animasiýa amet ipsum do cillum voluptate ex nulla tempor. Zähmetiň netijesi, elit däl enim maşklary. Esse ex consectetur mollit voluptate est duis laboris ad sit ipsum anim Lorem. “Lorem aliqua quis ullamco deserunt” we “aliqua esse irure” oturmak. Laborum nisi sit est tempor laborum mollit labore officia laborum excepteur commodo non commodo dolor excepteur commodo. Ipsum fugiat ex est consectetur ipsum commodo tempor sunt proidentde.

3-nji bent

“Anim fugiat dolor velit sit” ýa-da “reprender” culpa duis. “Nostrud aliqua ipsum fugiat minim proident occaecat excepteur aliquip culpa aute tempor”. Deserunt tempor mollit elit ex pariatur dolore velit fugiat mollit culpa irure ullamco est ex ullamco excepteur.

4-nji bent

“Anim fugiat dolor velit sit” ýa-da “reprender” culpa duis. “Nostrud aliqua ipsum fugiat minim proident occaecat excepteur aliquip culpa aute tempor”. Deserunt tempor mollit elit ex pariatur dolore velit fugiat mollit culpa irure ullamco est ex ullamco excepteur.

<div id="list-example" class="list-group">
  <a class="list-group-item list-group-item-action" href="#list-item-1">Item 1</a>
  <a class="list-group-item list-group-item-action" href="#list-item-2">Item 2</a>
  <a class="list-group-item list-group-item-action" href="#list-item-3">Item 3</a>
  <a class="list-group-item list-group-item-action" href="#list-item-4">Item 4</a>
</div>
<div data-spy="scroll" data-target="#list-example" data-offset="0" class="scrollspy-example">
  <h4 id="list-item-1">Item 1</h4>
  <p>...</p>
  <h4 id="list-item-2">Item 2</h4>
  <p>...</p>
  <h4 id="list-item-3">Item 3</h4>
  <p>...</p>
  <h4 id="list-item-4">Item 4</h4>
  <p>...</p>
</div>

Ulanylyşy

Maglumat atributlary arkaly

Topbar nawigasiýaňyza skrollspy häsiýetini aňsatlyk bilen goşmak data-spy="scroll"üçin içalyçylyk etmek isleýän elementiňize goşuň (köplenç bu şeýle bolar <body>). Soňra islendik Bootstrap komponentiniň data-targetesasy elementiniň ID ýa-da synpy bilen atribut goşuň..nav

body {
  position: relative;
}
<body data-spy="scroll" data-target="#navbar-example">
  ...
  <div id="navbar-example">
    <ul class="nav nav-tabs" role="tablist">
      ...
    </ul>
  </div>
  ...
</body>

JavaScript arkaly

CSS-ä goşanyňyzdan soň position: relative;, JavaScript arkaly scrollspy jaň ediň:

$('body').scrollspy({ target: '#navbar-example' })

Çözüp bolýan ID nyşanlary talap edilýär

Navbar baglanyşyklarynda çözülip bilinýän ID nyşanlary bolmaly. Mysal üçin, <a href="#home">home</a>DOM-daky ýaly bir zada laýyk bolmaly <div id="home"></div>.

Maksat däl :visibleelementler hasaba alynmady

:visibleJQuery-a laýyk gelmeýän nyşan elementleri hasaba alynmaz we degişli deňiz elementleri hiç haçan tapawutlandyrylmaz.

Usullar

.scrollspy('refresh')

DOM-dan elementleri goşmak ýa-da aýyrmak bilen bilelikde scrollspy ulananyňyzda, täzeleniş usulyna şeýle jaň etmeli bolarsyňyz:

$('[data-spy="scroll"]').each(function () {
  var $spy = $(this).scrollspy('refresh')
})

.scrollspy('dispose')

Bir elementiň aýlawyny ýok edýär.

Görnüş

Opsiýalar maglumat atributlary ýa-da JavaScript arkaly geçirilip bilner. Maglumat atributlary üçin, opsiýanyň adyny data-bolşy ýaly goşuň data-offset="".

Ady Görnüşi Bellenen Düşündiriş
ofset sany 10 Aýlanyş ýagdaýyny hasaplanyňyzda ýokardan ýapyljak pikseller.

Wakalar

Çäräniň görnüşi Düşündiriş
işjeňleşdirmek.bs.scrollspy Bu waka, haçan-da täze bir zat scrolllspy tarapyndan işjeňleşdirilse, aýlaw elementine ýanýar. 
$('[data-spy="scroll"]').on('activate.bs.scrollspy', function () {
  // do something…
})