Scrollspy
Hloov kho Bootstrap navigation lossis sau npe pawg raws li txoj haujlwm scroll los qhia tias qhov txuas twg tam sim no muaj nyob hauv qhov chaw saib.
Scrollspy muaj ob peb yam yuav tsum ua kom zoo:
- Yog tias koj tab tom tsim peb JavaScript los ntawm qhov chaw, nws xav tau
util.js. - Nws yuav tsum tau siv rau ntawm Bootstrap nav tivthaiv lossis npe pawg .
- Scrollspy xav tau
position: relative;ntawm lub caij koj tab tom spying rau, feem ntau yog<body>. - Thaum spying ntawm cov ntsiab lus uas tsis yog lub
<body>, nco ntsoov kom muaj ibheighttxheej thiaboverflow-y: scroll;thov. - Anchors (
<a>) yuav tsum tau thiab yuav tsum taw tes rau ib lub ntsiab nrog qhov ntawdid.
Thaum ua tiav tiav, koj pawg nav lossis cov npe yuav hloov kho raws li, txav .activechav kawm los ntawm ib yam khoom mus rau tom ntej raws li lawv cov hom phiaj cuam tshuam.
Scroll thaj tsam hauv qab ntawm navbar thiab saib qhov hloov pauv hauv chav kawm. Cov khoom poob qis yuav raug pom zoo ib yam.
@fat
Ad leggings keytar, brunch id art party dolor laboure. Pitchfork yr enim lo-fi ua ntej lawv muag tawm qui. Tumblr ua liaj ua teb-rau- rooj tsheb kauj vab txoj cai txawm li cas los xij. Ntxim hlub cardigan. Velit seitan mcsweeney's photo booth 3 hma hli irure. Cosby sweater lomo jean luv, williamsburg hoodie minim qui koj tej zaum tsis tau hnov txog lawv thiab cardigan trust fund culpa biodiesel wes anderson aesthetic. 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 xijpeem delectus food truck. Sapiente synth id assumenda. Locavore sed helvetica cliche irony, thundercats tej zaum koj tsis tau hnov txog lawv ua rau hoodie gluten-dawb lo-fi fap aliquip. Labore elit placeat ua ntej lawv muag tawm, terry richardson proident brunch nesciunt quis cosby sweater pariatur keffiyeh ut helvetica artisan. Cardigan craft npias 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>Scrollspy kuj ua haujlwm nrog nested .navs. Yog ib lub zes .nav, .activenws niam nws txiv kuj yuav .active. Scroll qhov chaw nyob ib sab ntawm lub navbar thiab saib qhov hloov pauv hauv chav kawm.
Yam khoom 1
Ex consequat commodo adipisicing exercitation aute excepteur occaecat ullamco duis aliqua id magna ullamco eu. Ua kom ipsum ipsum ullamco cillum consectetur thiab aute consectetur ua hauj lwm. Fugiat lab incididunt tempor eu consequat enim dolore proident. Qui lab ua tsis tau excepteur nulla magna eiusmod consectetur nyob rau hauv. Aliqua thiab aliqua officia quis thiab incididunt voluptate non anim reprehenderit adipisicing dolore ut consequat deserunt mollit dolore. Aliquip nulla enim veniam non fugiat id cupidatat nulla elit cupidatat commodo velit ut eiusmod cupidatat elit dolore.
Nqe 1-1
Amet tempor mollit aliquip pariatur excepteur commodo do ea cillum commodo Lorem thiab occaecat elit qui et. Aliquip Labore ex ex esse voluptate occaecat Lorem ullamco deserunt. Aliqua cillum excepteur irure consequat id quis ea. Zaum proident ullamco aute magna pariatur nostrud labore. Reprehenderit aliqua commodo eiusmod aliquip est do duis amet proident magna consectetur consequat eu commodo fugiat non quis. Enim aliquip 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.
Nqe 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 zaum culpa commodo elit adipisicing zaum aliquip elit proident voluptate minim mollit nostrud aute reprehenderit ua. Mollit excepteur eu Lorem ipsum anim commodo sint labore Lorem nyob rau hauv exercitation velit incidunt. Occaecat consectetur nisi nyob rau hauv occaecat proident minim enim sunt reprehenderit exercitation cupidatat thiab ua hauj lwm. Aliquip consequat ad labore mollit ut amet. Zaum pariatur tempor proident nyob rau hauv 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>Scrollspy kuj ua haujlwm nrog .list-groups. Scroll qhov chaw nyob ib sab ntawm cov npe pawg thiab saib cov chav kawm hloov pauv.
Yam khoom 1
Ex consequat commodo adipisicing exercitation aute excepteur occaecat ullamco duis aliqua id magna ullamco eu. Ua kom ipsum ipsum ullamco cillum consectetur thiab aute consectetur ua hauj lwm. Fugiat lab incididunt tempor eu consequat enim dolore proident. Qui lab ua tsis tau excepteur nulla magna eiusmod consectetur nyob rau hauv. Aliqua thiab aliqua officia quis thiab incididunt voluptate non anim reprehenderit adipisicing dolore ut consequat deserunt mollit dolore. Aliquip nulla enim veniam non fugiat id cupidatat nulla elit cupidatat commodo velit ut eiusmod cupidatat elit dolore.
Yam khoom 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 labouris ad sit ipsum anim Lorem. Incididunt veniam velit elit elit veniam Lorem aliqua quis ullamco deserunt sit enim elit aliqua esse irure. Laborum nisi zaum est tempor labourum mollit laboure officia lab excepteur commodo non commodo dolor excepteur commodo. Ipsum fugiat ex est consectetur ipsum commodo tempor sunt in proident.
Yam khoom 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.
Yam khoom 4
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.
<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>Txhawm rau yooj yim ntxiv scrollspy tus cwj pwm rau koj qhov topbar navigation, ntxiv data-spy="scroll"rau lub caij koj xav soj ntsuam (feem ntau qhov no yuav yog <body>). Tom qab ntawd ntxiv tus data-targetcwj pwm nrog tus ID lossis chav kawm ntawm niam txiv lub ntsiab ntawm ib qho Bootstrap .navtivthaiv.
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>Tom qab ntxiv position: relative;hauv koj CSS, hu rau scrollspy ntawm JavaScript:
$('body').scrollspy({ target: '#navbar-example' })Resolvable ID hom phiaj xav tau
Navbar txuas yuav tsum muaj lub hom phiaj id daws tau. Piv txwv li, ib qho <a href="#home">home</a>yuav tsum sib haum rau ib yam dab tsi hauv DOM zoo li <div id="home"></div>.
Cov ntsiab lus tsis yog hom :visiblephiaj tsis quav ntsej
Lub hom phiaj cov ntsiab lus uas tsis yog :visibleraws li jQuery yuav raug tsis quav ntsej thiab lawv cov khoom siv nav yuav tsis raug qhia.
Thaum siv scrollspy ua ke nrog kev ntxiv lossis tshem tawm cov ntsiab lus los ntawm DOM, koj yuav tsum hu rau txoj kev hloov tshiab zoo li:
$('[data-spy="scroll"]').each(function () {
var $spy = $(this).scrollspy('refresh')
})Destroys ib lub caij scrollspy.
Cov kev xaiv tuaj yeem dhau los ntawm cov ntaub ntawv tus cwj pwm lossis JavaScript. Rau cov ntaub ntawv tus cwj pwm, ntxiv rau qhov kev xaiv npe rau data-, xws li hauv data-offset="".
| Lub npe | Hom | Default | Kev piav qhia |
|---|---|---|---|
| offset | tus lej | 10 | Pixels rau offset los ntawm sab saum toj thaum xam txoj hauj lwm ntawm scroll. |
| Hom xwm txheej | Kev piav qhia |
|---|---|
| activate.bs.scrollspy | Qhov xwm txheej no tua hluav taws rau ntawm lub caij scroll thaum twg ib yam khoom tshiab tau qhib los ntawm scrollspy. |
$('[data-spy="scroll"]').on('activate.bs.scrollspy', function () {
// do something…
})