Scrollspy

Nuashonraigh go huathoibríoch nascleanúint Bootstrap nó liostaigh comhpháirteanna grúpa bunaithe ar shuíomh an scrolla chun a chur in iúl cén nasc atá gníomhach san amharclann faoi láthair.

Conas a oibríonn sé

Tá roinnt riachtanas ag Scrollspy chun feidhmiú i gceart:

Má tá ár JavaScript á thógáil agat ón bhfoinse, teastaíonnutil.js .
Ní mór é a úsáid ar chomhpháirt nascleanúna Bootstrap nó ar ghrúpa liostaí .
Éilíonn Scrollspy position: relative;ar an eilimint a bhfuil tú ag spying air, de ghnáth an <body>.
Nuair a spying ar eilimintí eile seachas an <body>, a bheith cinnte go bhfuil heightsraith agus overflow-y: scroll;i bhfeidhm.
Tá ancairí ( <a>) ag teastáil agus ní mór dóibh gné a chur in iúl leis sin id.

Nuair a chuirtear i bhfeidhm go rathúil é, déanfaidh do ghrúpa nascleanúna nó liostaí nuashonrú dá réir, ag bogadh an .activerang ó mhír amháin go dtí an chéad cheann eile bunaithe ar na spriocanna a bhaineann leo.

Scrollaigh an limistéar faoi bhun an bharra nascleanúna agus féach ar an athrú gníomhach ranga. Cuirfear béim ar na míreanna anuas freisin.

@saille

Ad leggings keytar, brunch id art party dolor laboure. Pitchfork yr enim lo-fi sular dhíol siad amach qui. Cearta rothar feirme-go-tábla Tumblr is cuma cad é. Anim keffiyeh carles cardigan. Velit seitan mcsweeney both grianghraf 3 mac tíre moon irure. Geansaí Cosby lomo jean shorts, williamsburg hoodie minim qui is dócha nár chuala tú trácht orthu et cardigan trust fund culpa bithdhíosal wes anderson aeistéitiúil. Nihil tattooed accusamus, creid íoróin bithdhíosal 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 cibé trucail bia delectus. Sapiente synth id assumenda. Locavore sed helvetica cliche íoróin, cait toirneach is dócha nár chuala tú trácht orthu as hoodie lo-fi fap aliquip saor ó ghlútan. Labore elit placeat sular dhíol siad amach, terry richardson proident brunch nesciunt quis costy sweater pariatur keffiyeh ut helvetica artisan. Cardigan ceardaíochta beoir seitan readymade velit. VHS chambray laboris am veniam. Anim mollit minim comodo 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>

Sampla le nav neadaithe

Oibríonn Scrollspy freisin le neadaithe .navs. .navMá tá nead .active, beidh a thuismitheoirí freisin .active. Scrollaigh an limistéar in aice leis an mbarra nascleanúna agus féach ar an athrú gníomhach ranga.

Mír 1

Ex consequat commodo adipisicing exercitation aute excepteur occaecat ullamco duis aliqua id magna ullamco eu. Déan nó ipsum ipsum ullamco cillum consectetur et aute conectetur laboure. Fugiat laborum incididunt tempor eu consequat enim dolore proident. Ní gá duit a bheith ina n-eiseamláirí nulla magna eiusmod consectetur in. Aliqua et aliqua officia quis et incididunt voluptate non anim reprehenderit adipisicing dolore agus consequat deserunt molit dolore. Ní raibh aon chumhacht ag veniam neamh fugiat id cupidatat nulla elit cupidatat commodo velit ut eiusmod cupidatat elit dolore.

Mír 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 dá bharr sin id quis ea. Suigh proident ullamco aute magna pariatur nostrud laboure. 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 commodo adipisicing exercitation officia nisi adipisicing. Anim id duis qui consequat labore adipisicing sint dolor elit cillum anim et fugiat.

Mír 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 laboure Lorem i bhfeidhmiú velit incididunt. Occaecat consectetur nisi in occaecat proident minim enim sunt reprehenderit exercitation cupidatat et do officia. Ní bheidh aon toradh ar an obair a dhéanann tú ach a thuilleadh. 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>

Sampla le liosta-ghrúpa

Oibríonn Scrollspy freisin le .list-groups. Scrollaigh an limistéar in aice leis an ngrúpa liosta agus féach ar an athrú gníomhach ranga.

Mír 1 Mír 2 Mír 3 Mír 4

Mír 1

Mír 2

Quis magna Lorem anim amet ipsum do mollit sit cillum voluptate ex nulla tempor. Is éard atá i gceist le saothair neamh-elit ná feidhmiú 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 labourum excepteur comodo non commodo dolor excepteur comodo. Ipsum fugiat ex est consectetur ipsum commodo tempor sunt in proident.

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

Mír 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>

Úsáid

Trí tréithe sonraí

Chun iompar scrollspy a chur le do nascleanúint barrbharra go héasca, cuir data-spy="scroll"leis an eilimint a bhfuil tú ag iarraidh spiaireacht a dhéanamh air (go hiondúil is é seo an <body>). Ansin cuir an data-targettréith leis an ID nó le haicme na máthaireiliminte d'aon .navchomhpháirt 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>

Trí JavaScript

Tar éis position: relative;duit do CSS a chur isteach, cuir glaoch ar an scrollspy trí JavaScript:

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

Spriocanna aitheantais inréite ag teastáil

Caithfidh spriocanna aitheantais inréite a bheith ag naisc Navbar. Mar shampla, <a href="#home">home</a>ní mór a fhreagraíonn do rud éigin sa DOM cosúil le <div id="home"></div>.

Neamhaird `:visible`déanta ar eilimintí neamhsprice

Ní thabharfar aird ar sprioc-eilimintí nach bhfuil :visiblede réir jQuery agus ní thaispeánfar a n-ítimí nascleanúna comhfhreagracha choíche.

Modhanna

`.scrollspy('refresh')`

Agus scrollspy in úsáid in éineacht le heilimintí a chur leis nó a bhaint den DOM, beidh ort an modh athnuachana a ghlaoch mar seo:

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

`.scrollspy('dispose')`

Scriosann scrollspy eilimint.

Roghanna

Is féidir roghanna a chur ar aghaidh trí tréithe sonraí nó JavaScript. Maidir le tréithe sonraí, cuir ainm na rogha i gceangal le data-, mar atá i data-offset="".

Ainm	Cineál	Réamhshocrú	Cur síos
fhritháireamh	uimhir	10	Picteilíní le fritháireamh ón mbarr agus suíomh an scrolla á ríomh.

Imeachtaí

Cineál Imeachta	Cur síos
ghníomhachtú.bs.scrollspy	Cuireann an teagmhas seo lasadh ar an eilimint scrollbharra aon uair a ghníomhaíonn an scrollspy mír nua.

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

Scrollspy

Conas a oibríonn sé

Sampla i navbar

@saille

@mdo

one

two

three

Sampla le nav neadaithe

Mír 1

Mír 1-1

Mír 2-2

Item 2

Item 3

Item 3-1

Item 3-2

Sampla le liosta-ghrúpa

Mír 1

Mír 2

Mír 3

Mír 4

Úsáid

Trí tréithe sonraí

Trí JavaScript

Spriocanna aitheantais inréite ag teastáil

Neamhaird :visibledéanta ar eilimintí neamhsprice

Modhanna

.scrollspy('refresh')

.scrollspy('dispose')

Roghanna

Imeachtaí

Neamhaird `:visible`déanta ar eilimintí neamhsprice

`.scrollspy('refresh')`

`.scrollspy('dispose')`