Scrollspy

Hlaziya ngokuzenzekelayo ukukhangela kweBootstrap okanye uluhlu lwamalungu eqela ngokusekelwe kwindawo yokuskrola ukubonisa ukuba leliphi ikhonkco elisebenzayo ngoku kwindawo yokujonga.

Ingaba isebenza kanjani

IScrollspy ineemfuno ezimbalwa zokusebenza ngokufanelekileyo:

Ukuba wakha iJavaScript yethu kwimvelaphi, kufunautil.js .
Kufuneka isetyenziswe kwi Bootstrap nav inxalenye okanye uluhlu lweqela .
I-Scrollspy ifuna position: relative;into oyihlolayo, ngokwesiqhelo i <body>.
Xa uhlola izinto ngaphandle kwe <body>, qiniseka ukuba heightuneseti kwaye overflow-y: scroll;usetyenziswe.
Iiankile ( <a>) ziyafuneka kwaye kufuneka zalathe kwinto enaloo nto id.

Xa iphunyezwe ngempumelelo, i-nav yakho okanye iqela loluhlu liya kuhlaziya ngokufanelekileyo, lihambisa .activeiklasi ukusuka kwinto enye ukuya kwelandelayo ngokusekelwe kwiithagethi zabo ezinxulumene nazo.

Skrolela indawo engezantsi kwe-navbar kwaye ubukele utshintsho lweklasi esebenzayo. Izinto eziya kuhla nazo ziya kuphawulwa.

@fat

Ad leggings keytar, brunch id art party dolor labore. I-Pitchfork ngonyaka enim lo-fi ngaphambi kokuba bathengise yonke into. Tumblr ifama-to-itheyibhile amalungelo ibhayisekile nantoni na. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Ijezi kaCosby ilomo yejean ezimfutshane, williamsburg hoodie minim qui mhlawumbi awuzange uve ngazo et cardigan trust fund culpa biodiesel wes anderson aesthetic. UNihil une tattoo accsamus, 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 isithunywa bag marfa nantoni na ilori yokutya deelectus. Sapiente synth id guessnda. Locavore sed helvetica cliche irony, thundercats mhlawumbi awuzange uve ngazo consequat hoodie gluten-free lo-fi fap aliquip. Labore elit placeat phambi kokuba bathengise, 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 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>

Umzekelo ngendlwane nav

I-Scrollspy iphinda isebenze kunye ne-nested .navs. Ukuba kukho indlwane .nav, .activeabazali bayo nabo baya kuba .active. Skrolela indawo ecaleni kwebar ye-nav kwaye ubukele utshintsho lweklasi esebenzayo.

Umba woku-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. Fugiat laborum incididunt tempor eu consequat enim dolore proident. Qui laborum ukwenza non excepteur nulla magna eiusmod consectetur in. Aliquip nulla enim veniam non fugiat id cupidatat nulla elit cupidatat commodo velit ut eiusmod cupidatat elit dolore.

Umba 1-1

Amet tempor mollit aliquip pariatur excepteur commodo do ea cillum commodo Lorem et occaecat elit qui et. Aliquip labore ex ex esse voluptate occaecat Lorem ullamco deserunt. Aliqua cillum excepteur irure consequat id quis ea. Hlala kakuhle 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 i-exercitation ullamco adipisicing voluptate excepteur minim exercitation minim minim commodo adipisicing exercitation officia nisi adipisicing. Anim id duis qui consequat labore adipisicing sint dolor elit cillum anim et fugiat.

Umba 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 Lorem kwi-exercitation velit incididunt. Occaecat consectetur nisi in occaecat proident minim enim sunt reprehenderit exercitation cupidatat et do officia. Aliquip consequat ad labore labore mollit ut amet. Hlala ixesha elide ixesha elide kwi-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>

Umzekelo kunye noluhlu-iqela

I-Scrollspy isebenza kunye no- .list-groups. Skrolela indawo ecaleni kweqela loluhlu kwaye ubukele utshintsho lweklasi esebenzayo.

Umba woku-1 Into yesi-2 Into yesi-3 Into yesi-4

Umba woku-1

Into yesi-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. Elit 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.

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. Deserunt tempor elit ex pariatur dolore velit fugiat mollit culpa irure ullamco est ex ullamco excepteur.

Into yesi-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>

Ukusetyenziswa

Ngeempawu zedatha

Ukongeza ngokulula isimilo sokuskrola kulawulo lwakho lwebar engaphezulu, yongeza data-spy="scroll"kwinto ofuna ukuyihlola (ubukhulu becala le iya kuba yi <body>). Emva koko yongeza data-targetuphawu kunye ne-ID okanye udidi lwelungu lomzali walo naliphi na ilungu le-Bootstrap .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>

NgeJavaScript

Emva kokongeza position: relative;kwiCSS yakho, fowunela i-scrollspy ngeJavaScript:

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

Iithagethi zeSazisi ezinokusonjululwa ziyafuneka

Unxulumano lwebar yeNavbar kufuneka lube nethagethi ye-id enokusombululeka. Umzekelo, <a href="#home">home</a>kufuneka ihambelane nento ekwiDOM efana <div id="home"></div>.

Izinto ezingajoliswanga `:visible`zingahoywa

Izinto ekujoliswe kuzo ezingahambelaniyo :visiblene-jQuery aziyi kuhoywa kwaye izinto zazo ze-nav ezihambelanayo azisayi kuphawulwa.

Iindlela

`.scrollspy('refresh')`

Xa usebenzisa i-scrollspy ngokudibanisa okanye ukususa izinto kwi-DOM, kuya kufuneka ufowunele indlela yokuhlaziya ngolu hlobo:

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

`.scrollspy('dispose')`

Itshabalalisa iscrollspy ye element.

Iinketho

Iinketho zinokugqithiswa ngeempawu zedatha okanye iJavaScript. Kuphawu lwedatha, faka igama lokhetho ku data-, njengakwi data-offset="".

Igama	Uhlobo	Ukuhlala kukho	Inkcazo
i-offset	inani	10	Iipikseli zokulinganisa ukusuka phezulu xa ubala indawo yokuskrola.

Iziganeko

Uhlobo loMnyhadala	Inkcazo
vula.bs.scrollspy	Esi siganeko sivutha kwinto yokuskrola nanini na xa into entsha ivulwa yi-scrollspy.

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

Scrollspy

Ingaba isebenza kanjani

Umzekelo kwi-navbar

@fat

@mdo

one

two

three

Umzekelo ngendlwane nav

Umba woku-1

Umba 1-1

Umba 2-2

Item 2

Item 3

Item 3-1

Item 3-2

Umzekelo kunye noluhlu-iqela

Umba woku-1

Into yesi-2

Into yesi-3

Into yesi-4

Ukusetyenziswa

Ngeempawu zedatha

NgeJavaScript

Iithagethi zeSazisi ezinokusonjululwa ziyafuneka

Izinto ezingajoliswanga :visiblezingahoywa

Iindlela

.scrollspy('refresh')

.scrollspy('dispose')

Iinketho

Iziganeko

Izinto ezingajoliswanga `:visible`zingahoywa

`.scrollspy('refresh')`

`.scrollspy('dispose')`