Scrollspy

Buyekeza ngokuzenzakalela ukuzulazula kwe-Bootstrap noma uhlu lwezingxenye zeqembu ngokusekelwe endaweni yokuskrola ukuze ubonise ukuthi yisiphi isixhumanisi esisebenzayo okwamanje endaweni yokubuka.

Isebenza kanjani

I-Scrollspy inezidingo ezimbalwa ukuze isebenze kahle:

Uma wakha i-JavaScript yethu ngomthombo, idingautil.js .
Kufanele isetshenziswe engxenyeni ye-Bootstrap nav noma iqembu lohlu .
I-Scrollspy idinga position: relative;ku-elementi oyihlolayo, ngokuvamile i- <body>.
Uma uhlola izakhi ngaphandle kwe- <body>, qiniseka ukuthi heightunesethi futhi overflow-y: scroll;uyasetshenziswa.
Amahange ( <a>) ayadingeka futhi kufanele akhombe into enaleyo id.

Lapho isetshenziswe ngempumelelo, i-nav yakho noma iqembu lohlu lizobuyekezwa ngokufanele, lisuse .activeikilasi lisuke entweni eyodwa liye kwelandelayo ngokusekelwe kulokho elikuhlosile okuhlobene.

Skrola indawo engezansi kwe-navbar bese ubuka ukuguquka kwekilasi elisebenzayo. Izinto zokwehla zizogqanyiswa futhi.

@amafutha

I-Ad leggings keytar, i-brunch id art party dolor labore. I-Pitchfork ineminyaka engu-nim lo-fi ngaphambi kokuthi bathengise yonke into. Amalungelo ebhayisikili e-Tumblr epulazini ukuya etafuleni noma yini. I-Cardigan ene-anim keffiyeh carles. Indlwana yezithombe ka-Velit seitan mcsweeney 3 wolf moon irure. Ijezi le-Cosby lomo jean shorts, i-williamsburg hoodie minim qui cishe awukaze uzwe ngazo et cardigan trust fund culpa biodiesel wes anderson aesthetic. U-Nihil one-tattooed accusamus, cred irony 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 whatever deelectus food truck. Sapiente synth id imaginenda. I-Locavore sed helvetica cliche irony, ama-thundercats cishe awukaze uzwe ngawo consequat hoodie gluten-free lo-fi fap aliquip. I-Labore elit placeat ngaphambi kokuba ithengiswe, u-terry richardson proident brunch nesciunt quis cosby sweater pariatur keffiyeh ut helvetica artisan. I-Cardigan craft beer seitan readymade velit. I-VHS chambray laboris tempor veniam. Anim mollit minim 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>

Isibonelo esine-nested nav

I-Scrollspy iphinde isebenze ne-nested .navs. Uma kunesidleke .nav, .activeabazali bayo nabo bazoba .active. Skrola indawo eduze kwe-navbar bese ubuka ukuguquka kwekilasi elisebenzayo.

Into 1

Ex consequat commodo adipisicing exercitation aute excepteur occaecat ullamco duis aliqua id magna ullamco eu. Yenza i-ipsum ipsum ullamco cillum consectetur ut aute consectetur labour. I-Fugiat laborum incididunt tempor eu consequat enim dolore proident. Qui laborum do non excepteur nulla magna eiusmod consectetur in. Aliqua et aliqua officia quis and incididunt voluptate non anim reprehenderit adipisicing dore ut consequat deserunt mollit dore. Aliquip nulla enim veniam non fugiat id cupidatat nulla elit cupidatat commodo velit ut eiusmod cupidatat elit dolore.

Into 1-1

I-Amet tempor mollit aliquip pariatur excepteur commodo do ea cillum commodo Lorem et occaecat elit qui et. I-Aliquip labore ex ex esse voluptate occaecat Lorem ullamco deserunt. I-Aliqua cillum excepteur irure consequat id quis ea. Hlala kahle ullamco aute magna pariatur nostrud labore. Reprehenderit aliqua commodo eiusmod aliquip est do duis amet proident magna consectetur consequat eu commodo fugiat non quis. I-Enim aliquip exercitation ullamco adipisicing voluptate excepteur minim exercitation minim minim commodo adipisicing exercitation officia nisi adipisicing. I-anim id duis qui consequat labore adipisicing sint dolor elit cillum anim et fugiat.

Into 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

Labore sit culpa commodo elit adipisicing sit aliquip elit proident voluptate minim mollit nostrud aute reprehenderit do. I-Mollit excepteur eu Lorem ipsum anim commodo sint labore I-Lorem ekuzivivinyeni velit incididunt. Occaecat consectetur nisi in occaecat proident minim enim sunt reprehenderit exercitation cupidatat and do officia. Aliquip consequat ad labore labore mollit ut amet. Hlala unolwazi lwesikhashana ku-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>

Isibonelo nge-list-group

I-Scrollspy iphinde isebenze no- .list-groups. Skrola indawo eseduze neqembu lohlu bese ubuka ukuguquka kwekilasi elisebenzayo.

Into 1 Into 2 Into yesi-3 Iphuzu 4

Into 1

Into 2

Quis magna Lorem anim amet ipsum do mollit sit cillum voluptate ex nulla tempor. I-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. I-Ipsum fugiat ex est consectetur ipsum commodo tempor sunt in proident.

Into yesi-3

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

Iphuzu 4

<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>

Ukusetshenziswa

Ngezibaluli zedatha

Ukwengeza kalula impatho ye-scrollspy ekuzulazuleni kwe data-spy="scroll"-topbar yakho, engeza entweni ofuna ukuyihlola (imvamisa lokhu kuzoba yi- <body>). Bese wengeza data-targetisibaluli nge-ID noma isigaba sesici esingumzali sanoma iyiphi .navingxenye ye-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>

Nge-JavaScript

Ngemva kokungeza position: relative;ku-CSS yakho, shayela i-scrollspy nge-JavaScript:

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

Kudingeka okuqondiwe kwe-ID okungaxazululeka

Izixhumanisi ze-Navbar kufanele zibe neziqondiso ze-id ezingaxazululeka. Isibonelo, <a href="#home">home</a>okumele kuhambisane nento ethize ku-DOM efana ne- <div id="home"></div>.

`:visible`Izinto ezingaqondisiwe azinakiwe

Izinto eziqondiwe ezingahambisani :visiblene-jQuery zizozitshwa futhi izinto zazo ze-nav ezihambisanayo azisoze zagqanyiswa.

Izindlela

`.scrollspy('refresh')`

Uma usebenzisa i-scrollspy ngokuhambisana nokwengeza noma ukususa izakhi ku-DOM, uzodinga ukushayela indlela yokuvuselela kanje:

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

`.scrollspy('dispose')`

Icekela phansi i-scrollspy yento.

Izinketho

Izinketho zingadluliswa ngezibaluli zedatha noma i-JavaScript. Ukuze uthole izibaluli zedatha, faka igama lenketho kokuthi data-, njengaku data-offset="".

Igama	Uhlobo	Okuzenzakalelayo	Incazelo
offset	inombolo	10	Amaphikseli okufanele uwasuse ukusuka phezulu uma ubala indawo yokuskrola.

Imicimbi

Uhlobo Lomcimbi	Incazelo
activate.bs.scrollspy	Lo mcimbi uvutha kusici sokuskrola noma nini lapho into entsha yenziwa isebenze i-scrollspy.

$('[data-spy="scroll"]').on('activate.bs.scrollspy', function () {
  // do something…
})

Scrollspy

Isebenza kanjani

Isibonelo ku-navbar

@amafutha

@mdo

one

two

three

Isibonelo esine-nested nav

Into 1

Into 1-1

Into 2-2

Item 2

Item 3

Item 3-1

Item 3-2

Isibonelo nge-list-group

Into 1

Into 2

Into yesi-3

Iphuzu 4

Ukusetshenziswa

Ngezibaluli zedatha

Nge-JavaScript

Kudingeka okuqondiwe kwe-ID okungaxazululeka

:visibleIzinto ezingaqondisiwe azinakiwe

Izindlela

.scrollspy('refresh')

.scrollspy('dispose')

Izinketho

Imicimbi

`:visible`Izinto ezingaqondisiwe azinakiwe

`.scrollspy('refresh')`

`.scrollspy('dispose')`