Source

Scrollspy

Si toos ah u cusboonaysii Bootstrap navigation ama tax qaybaha kooxda ee ku salaysan booska rogid si aad u muujiso xidhiidhka hadda firfircoon ee muuqaalka.

Sida ay u shaqeyso

Scrollspy waxa ay leedahay shuruudo dhawr ah si uu si sax ah ugu shaqeeyo:

  • Haddii aad JavaScript-kayaga ka dhisayso isha, waxay u baahan tahayutil.js .
  • Waa in lagu isticmaalo qaybta Bootstrap nav ama kooxda liiska .
  • Scrollspy waxay u baahan tahay position: relative;walxaha aad basaasayso, badanaaba <body>.
  • Markaad basaasayso canaasirta aan ahayn kan <body>, hubi inaad haysato meel heightla isku xidhay oo overflow-y: scroll;codso.
  • Barroosinnada ( <a>) ayaa loo baahan yahay oo waa inay farta ku fiiqaan shay taas leh id.

Marka si guul leh loo fuliyo, nav-gaaga ama kooxdaada liiska ayaa u cusboonaysiin doona si waafaqsan, iyaga oo ka wareejinaya .activefasalka hal shay una guuri doona kan xiga iyadoo lagu saleynayo yoolalka la xiriira.

Tusaale ahaan navbar

U rog aagga navbar ka hooseeya oo daawo isbeddelka fasalka firfircoon. Waxyaabaha hoos u dhaca ayaa sidoo kale la iftiimin doonaa.

@ buuran

Ad leggings keytar, brunch id art party dolor labour. Pitchfork yr enim lo-fi ka hor inta aysan iibin qui. Tumblr beer-ilaa-miiska xuquuqda baaskiilka wax kasta ha ahaatee. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby funaanad lomo Jean shorts, williamsburg hoodie minim qui waxaa laga yaabaa inaadan maqlin iyaga iyo cardigan Trust fund culpa biodiesel wes anderson bilicda. Nihil 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 wax alla wixii gaari cunto ah oo delectus ah. Sapiente synth id la qaatay. Locavore sed helvetica cliche bir ah, onkod laga yaabo inaadan maqlin iyaga oo keenaya hoodie gluten-free lo-fi fap aliquip. Labore elit placeat ka hor inta aysan iibin, Terry Richardson oo aad u cad cad brunch nesciunt quis cosby funaanad pariatur keffiyeh ut helvetica artisan. Beerka farsamada gacanta ee Cardigan seitan velit diyaarsan. VHS chambray laboris tempor veniam. Anim mollit minim commodo ullamco onkod.

<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>

Tusaale leh nav buul leh

Scrollspy sidoo kale waxay la shaqeysaa buulka .navs. Haddii buul ku .navyaal .active, waalidkeed sidoo kale waxay ahaan doonaan .active. U rog aagga ku xiga navbar oo daawo isbeddelka fasalka firfircoon.

Shayga 1

Ex consequat commodo adipisicing exercitation aute marka laga reebo occaecat ullamco duis aliqua id magna ullamco eu. Isku day in aad shaqada u qabato. Fugiat laborum dhacdo waqti ku meel gaar ah oo ka mid ah tani waxay keentay in si cad. Qui laborum do 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.

Shayga 1-1

Amet tempor mollit aliquip pariatur marka laga reebo commodo do ea cillum commodo Lorem iyo occaecat elit qui et. Aliquip labore ex ex esse voluptate occaecat Lorem ullamco deserunt. Aliqua cillum excepteur irure consequat id quis ea. Ku fadhiiso ullamco aute magna pariatur nostrud foosha. Reprehenderit aliqua commodo eiusmod aliquip est do duis amet proident magna consectetur consequat eu commodo fugiat non quis. Enim aliquip exercitation ullamco adipisicing voluptate marka laga reebo jimicsiga minim minim minim commodo adipisicing exercitation officia nisi adipisicing. Anim id duis qui consequat labore adipisicing sint dolor elit cillum anim et fugiat.

Shayga 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. Mollit excepteur eu Lorem ipsum anim commodo sint labore Lorem in jimicsi velit inciddunt. Occaecat consectetur nisi in occaecat proident minim enim sunt reprehenderit exercitation cupidatat iyo do officia. Wax ka ogow ad labour 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>

Tusaale kooxda liiska

Scrollspy sidoo kale waxay la shaqeysaa .list-groups. U rog aagga ku xiga kooxda liiska oo daawo isbeddelka fasalka firfircoon.

Shayga 1

Ex consequat commodo adipisicing exercitation aute marka laga reebo occaecat ullamco duis aliqua id magna ullamco eu. Isku day in aad shaqada u qabato. Fugiat laborum dhacdo waqti ku meel gaar ah oo ka mid ah tani waxay keentay in si cad. Qui laborum do 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.

Shayga 2

Qus magna Lorem anim amet ipsum do mollit sit cillum voluptate ex nulla tempor. Labourum 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. Labourum nisi sit est tempor laborum mollit labour office office laborum excepteur commodo non commodo dolor excepteur commodo. Ipsum fugiat ex est consectetur ipsum commodo tempor sunt in proident.

Shayga 3

Quis anim sit to amet fugiat dolor velit sit ea ea do rerehnderit culpa duis. Nostrud aliqua ipsum fugiat minim occaecat marka laga reebo aliquip culpa aute tempor reprehnderit. Deserunt tempor mollit elit ex pariatur dolore velit fugiat mollit culpa irure ullamco est ex ullamco ka baxsan.

Shayga 4

Quis anim sit to amet fugiat dolor velit sit ea ea do rerehnderit culpa duis. Nostrud aliqua ipsum fugiat minim occaecat marka laga reebo aliquip culpa aute tempor reprehnderit. Deserunt tempor mollit elit ex pariatur dolore velit fugiat mollit culpa irure ullamco est ex ullamco ka baxsan.

<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>

Isticmaalka

Iyada oo loo marayo sifooyinka xogta

Si aad si fudud ugu darto habdhaqanka scrollspy to your topbar navigation, data-spy="scroll"ku dar walxaha aad rabto in aad basaasto (inta badan tani waxay noqonaysaa <body>). Ka dib ku dar data-targetsifada aqoonsiga ama fasalka xubinta waalidka ee qayb kasta oo Bootstrap .navah.

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>

Iyadoo loo marayo JavaScript

Ka dib markaad ku position: relative;darto CSS-gaaga, wac qoraalka qoraalka JavaScript:

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

Bartilmaameedyada aqoonsiga ee la xallin karo ayaa loo baahan yahay

Xidhiidhiyayaasha Navbar waa inay lahaadaan bartilmaameedyada id la xallin karo. Tusaale ahaan, <a href="#home">home</a>waa inuu u dhigmaa wax ku jira DOM sida <div id="home"></div>.

Waxyaabaha aan :visiblebartilmaameedka ahayn waa la iska indhatiray

Walxaha bartilmaameedka ah ee aan :visiblewaafaqsanayn jQuery waa la iska indha tiraayaa oo shayada badda ee u dhigma weligood lama iftiimin doono.

Hababka

.scrollspy('refresh')

Markaad isticmaalayso scrollspy iyadoo lala kaashanayo ku darista ama ka saarida walxaha DOM, waxaad u baahan doontaa inaad wacdo habka dib u cusboonaysiinta sida:

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

.scrollspy('dispose')

Wuxuu baabi'iyaa rog-rogadka curiyaha.

Ikhtiyaarada

Ikhtiyaarada waxaa lagu gudbi karaa sifada xogta ama JavaScript. Sifooyinka xogta, ku dheji magaca ikhtiyaarka data-, sida ku jira data-offset="".

Magaca Nooca Asal ahaan Sharaxaada
dhimis tirada 10 Pixels in laga bilaabo xagga sare marka la xisaabinayo booska rogid.

Dhacdooyinka

Nooca Dhacdada Sharaxaada
firfircooni.bs.scrollspy Dhacdadani waxay dab ku shid cunsuga duuduubka mar kasta oo shay cusub uu hawl galo duubista. 
$('[data-spy="scroll"]').on('activate.bs.scrollspy', function () {
  // do something…
})