Source

Scrollspy

Nganyari kanthi otomatis navigasi Bootstrap utawa dhaptar komponen klompok adhedhasar posisi gulung kanggo nunjukake link endi sing lagi aktif ing viewport.

Cara kerjane

Scrollspy duwe sawetara syarat supaya bisa digunakake kanthi bener:

  • Yen sampeyan lagi mbangun JavaScript saka sumber, mbutuhakeutil.js .
  • Sampeyan kudu digunakake ing komponen nav Bootstrap utawa grup dhaptar .
  • Scrollspy mbutuhake position: relative;ing unsur sampeyan spying ing, biasane ing <body>.
  • Nalika spying ing unsur liyane saka <body>, dadi manawa kanggo duwe pesawat heightlan overflow-y: scroll;Applied.
  • Jangkar ( <a>) dibutuhake lan kudu ngarahake menyang unsur sing ana id.

Nalika kasil dileksanakake, nav utawa dhaftar grup bakal nganyari patut, mindhah .activekelas saka siji item kanggo sabanjuré adhedhasar Doel gadhah.

Conto ing navbar

Gulung area ing ngisor navbar lan nonton owah-owahan kelas aktif. Item gulung mudhun uga bakal disorot.

@lemak

Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi sadurunge padha adol metu qui. Tumblr farm-to-table hak sepeda apa wae. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minimal qui sampeyan mbokmenawa durung krungu saka wong-wong mau lan cardigan trust fund culpa biodiesel wes anderson estetika. Nihil tato accusamus, cred ironi biodiesel keffiyeh artisan ullamco consequat.

@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 blog, culpa messenger bag marfa apa wae delectus food truck. Sapiente synth id assumenda. Locavore sed helvetica cliche ironi, thundercats sampeyan mbokmenawa durung krungu saka wong-wong mau consequat hoodie gluten-free lo-fi fap aliquip. Laboure elit placeat sadurunge padha adol, terry richardson proident brunch nesciunt quis cosby sweater pariatur keffiyeh ut helvetica artisan. Cardigan craft beer seitan readymade velit. VHS chambray laboris tempor veniam. Anim mollit minimal commodo ullamco thundercats.

<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>

Conto karo nested nav

Scrollspy uga dianggo karo nested .navs. .navYen ana susuh .active, wong tuwane uga .active. Gulung wilayah ing jejere navbar lan nonton owah-owahan kelas aktif.

Item 1

Ex consequat commodo adipisicing exercitation aute excepteur occaecat ullamco duis aliqua id magna ullamco eu. Apa sampeyan bisa nggawe consectetur ut lan aute consectetur labore. Fugit laborum incididunt tempor eu consequat enim dolore proident. Apa sing ora bisa ditindakake ora ana sing bisa ditindakake. Ndhaptar siji-sijine sing ora ana gunane, nanging ora ana sing ora bisa diganti.

Item 1-1

Amet tempor mollit aliquip pariatur excepteur commodo do ea cillum commodo Lorem lan occaecat elit qui et. Aliquip labore ex ex esse voluptate occaecat Lorem ullamco deserunt. Aliqua cillum excepteur irure consequat id quis ea. Sit proident ullamco aute magna pariatur nostrud labore. Reprenderit aliqua commodo eiusmod aliquip est do duis amet proident magna consectetur consequat eu commodo fugit non quis. Enim aliquip exercitation ullamco adipisicing voluptate kajaba minimal exercitation minimal commodo adipisicing exercitation officia nisi adipisicing. Anim id duis qui consequat labore adipisicing sint dolor elit cillum anim and fugit.

Item 2-2

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

Kerjane culpa commodo elit adipisicing sit aliquip elit proident voluptate minimal mollit nostrud utawa reprehenderit do. Mollit excepteur eu Lorem ipsum anim commodo sint labore Lorem in exercitation velit incididunt. Occaecat consectetur ana ing occaecat proident minimal sing bisa dileksanakake latihan cupidatat lan nindakake resmi. Dipuntedahaken dening labore labore mollit ut amet. Sit pariatur tempor proident in veniam culpa aliqua excepteur elit magna fugiat eiusmod amet officia.

<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>

Conto karo dhaptar-grup

Scrollspy uga dianggo karo .list-groups. Gulung area ing jejere grup dhaptar lan nonton owah-owahan kelas sing aktif.

Item 1

Ex consequat commodo adipisicing exercitation aute excepteur occaecat ullamco duis aliqua id magna ullamco eu. Apa sampeyan bisa nggawe consectetur ut lan aute consectetur labore. Fugit laborum incididunt tempor eu consequat enim dolore proident. Apa sing ora bisa ditindakake ora ana sing bisa ditindakake. Ndhaptar siji-sijine sing ora ana gunane, nanging ora ana sing ora bisa diganti.

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. Kedadean sing ora bisa ditindakake kanthi cara sing ora dikarepake. 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

Kadospundi kawontenan ingkang dipun lampahi. Nostrud aliqua ipsum fugit minimal proident occaecat excepteur aliquip culpa aute tempor reprehenderit. Deserunt tempor mollit elit ex pariatur dolore velit fugit mollit culpa irure ullamco est ex ullamco excepteur.

Item 4

Kadospundi kawontenan ingkang dipun lampahi. Nostrud aliqua ipsum fugit minimal proident occaecat excepteur aliquip culpa aute tempor reprehenderit. Deserunt tempor mollit elit ex pariatur dolore velit fugit 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>

Panganggone

Liwat atribut data

Kanggo gampang nambah prilaku scrollspy menyang pandhu arah topbar, nambah data-spy="scroll"menyang unsur sing pengin Spy (paling biasane iki bakal <body>). Banjur tambahake data-targetatribut karo ID utawa kelas unsur induk saka .navkomponen Bootstrap.

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>

Liwat JavaScript

Sawise nambahake position: relative;CSS sampeyan, nelpon scrollspy liwat JavaScript:

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

Target ID sing bisa ditanggulangi dibutuhake

Tautan Navbar kudu duwe target id sing bisa ditanggulangi. Contone, <a href="#home">home</a>kudu cocog karo soko ing DOM kaya <div id="home"></div>.

Unsur non :visible-target diabaikan

unsur Doel sing ora :visiblemiturut jQuery bakal digatèkaké lan item nav sing cocog ora bakal disorot.

Metode

.scrollspy('refresh')

Nalika nggunakake scrollspy bebarengan karo nambah utawa mbusak unsur saka DOM, sampeyan kudu nelpon cara refresh kaya mangkene:

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

.scrollspy('dispose')

Ngancurake scrollspy unsur.

Pilihan

Opsi bisa dilewati liwat atribut data utawa JavaScript. Kanggo atribut data, tambahake jeneng pilihan menyang data-, kaya ing data-offset="".

jeneng Jinis Default Katrangan
ngimbangi nomer 10 Piksel kanggo ngimbangi saka ndhuwur nalika ngetung posisi gulung.

Acara

Jinis Acara Katrangan
activate.bs.scrollspy Acara iki murub ing unsur gulung kapan item anyar dadi diaktifake dening scrollspy ing. 
$('[data-spy="scroll"]').on('activate.bs.scrollspy', function () {
  // do something…
})