in English

Scrollspy

Ṣe imudojuiwọn lilọ kiri Bootstrap ni adaṣe tabi ṣe atokọ awọn paati ẹgbẹ ti o da lori ipo yi lọ lati tọka iru ọna asopọ ti n ṣiṣẹ lọwọlọwọ ni wiwo wiwo.

Lori iwe yi

Bawo ni o ṣe n ṣiṣẹ

Scrollspy ni awọn ibeere diẹ lati ṣiṣẹ daradara:

O gbọdọ lo lori paati Bootstrap nav tabi ẹgbẹ atokọ .
Scrollspy nbeere position: relative;lori eroja ti o ṣe amí lori, nigbagbogbo <body>.
Awọn ìdákọró ( <a>) ni a nilo ati pe o gbọdọ tọka si nkan kan pẹlu iyẹn id.

Nigbati imuse aṣeyọri, nav rẹ tabi ẹgbẹ atokọ yoo ṣe imudojuiwọn ni ibamu, gbigbe .activekilasi lati ohun kan si ekeji ti o da lori awọn ibi-afẹde ti o somọ wọn.

Awọn apoti ti o le yi lọ ati iwọle si keyboard

Ti o ba n ṣe eiyan ti o le yi lọ (miiran ju awọn <body>), rii daju pe o ni eto heightkan ati ki overflow-y: scroll;o lo si rẹ — lẹgbẹẹ kan tabindex="0"lati rii daju iwọle si keyboard.

Yi lọ si agbegbe ni isalẹ navbar ki o wo iyipada kilasi ti nṣiṣe lọwọ. Awọn nkan isọ silẹ yoo jẹ afihan bi daradara.

Ibẹrẹ akọkọ

Eyi jẹ diẹ ninu awọn akoonu dimu fun oju-iwe scrollspy. Ṣe akiyesi pe bi o ṣe yi lọ si isalẹ oju-iwe naa, ọna asopọ lilọ kiri ti o yẹ jẹ afihan. O tun ṣe jakejado apẹẹrẹ paati. A tẹsiwaju lati ṣafikun ẹda apẹẹrẹ diẹ sii nibi lati tẹnumọ yiyi ati fifi aami si.

Akole keji

Akọle kẹta

Akọle kẹrin

Akọle karun

<nav id="navbar-example2" class="navbar navbar-light bg-light px-3">
  <a class="navbar-brand" href="#">Navbar</a>
  <ul class="nav nav-pills">
    <li class="nav-item">
      <a class="nav-link" href="#scrollspyHeading1">First</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" href="#scrollspyHeading2">Second</a>
    </li>
    <li class="nav-item dropdown">
      <a class="nav-link dropdown-toggle" data-bs-toggle="dropdown" href="#" role="button" aria-expanded="false">Dropdown</a>
      <ul class="dropdown-menu">
        <li><a class="dropdown-item" href="#scrollspyHeading3">Third</a></li>
        <li><a class="dropdown-item" href="#scrollspyHeading4">Fourth</a></li>
        <li><hr class="dropdown-divider"></li>
        <li><a class="dropdown-item" href="#scrollspyHeading5">Fifth</a></li>
      </ul>
    </li>
  </ul>
</nav>
<div data-bs-spy="scroll" data-bs-target="#navbar-example2" data-bs-offset="0" class="scrollspy-example" tabindex="0">
  <h4 id="scrollspyHeading1">First heading</h4>
  <p>...</p>
  <h4 id="scrollspyHeading2">Second heading</h4>
  <p>...</p>
  <h4 id="scrollspyHeading3">Third heading</h4>
  <p>...</p>
  <h4 id="scrollspyHeading4">Fourth heading</h4>
  <p>...</p>
  <h4 id="scrollspyHeading5">Fifth heading</h4>
  <p>...</p>
</div>

Apeere pẹlu iteeye nav

Scrollspy tun ṣiṣẹ pẹlu iteeye .navs. Ti itẹ-ẹiyẹ .navba jẹ .active, awọn obi rẹ yoo tun jẹ .active. Yi lọ si agbegbe lẹgbẹẹ navbar ki o wo iyipada kilasi ti nṣiṣe lọwọ.

Nkan 1

Nkan 1-1

Nkan 1-2

Nkan 2

Nkan 3

Nkan 3-1

Nkan 3-2

<nav id="navbar-example3" class="navbar navbar-light bg-light flex-column align-items-stretch p-3">
  <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 ms-3 my-1" href="#item-1-1">Item 1-1</a>
      <a class="nav-link ms-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 ms-3 my-1" href="#item-3-1">Item 3-1</a>
      <a class="nav-link ms-3 my-1" href="#item-3-2">Item 3-2</a>
    </nav>
  </nav>
</nav>

<div data-bs-spy="scroll" data-bs-target="#navbar-example3" data-bs-offset="0" tabindex="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 1-2</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>

Apẹẹrẹ pẹlu ẹgbẹ-akojọ

Scrollspy tun ṣiṣẹ pẹlu awọn .list-groups. Yi lọ si agbegbe lẹgbẹẹ ẹgbẹ atokọ ki o wo iyipada kilasi ti nṣiṣe lọwọ.

Nkan 1 Nkan 2 Nkan 3 Nkan 4

Nkan 1

Nkan 2

Nkan 3

Nkan 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-bs-spy="scroll" data-bs-target="#list-example" data-bs-offset="0" class="scrollspy-example" tabindex="0">
  <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>

Lilo

Nipasẹ awọn abuda data

Lati fi irọrun ṣafikun ihuwasi scrollspy si lilọ kiri oke rẹ, ṣafikun data-bs-spy="scroll"si ipin ti o fẹ ṣe amí lori (julọ julọ eyi yoo jẹ <body>). Lẹhinna ṣafikun data-bs-targetẹda pẹlu ID tabi kilasi ti ẹya obi ti .navpaati Bootstrap eyikeyi.

body {
  position: relative;
}

<body data-bs-spy="scroll" data-bs-target="#navbar-example">
  ...
  <div id="navbar-example">
    <ul class="nav nav-tabs" role="tablist">
      ...
    </ul>
  </div>
  ...
</body>

Nipasẹ JavaScript

Lẹhin fifi kun position: relative;ninu CSS rẹ, pe scrollspy nipasẹ JavaScript:

var scrollSpy = new bootstrap.ScrollSpy(document.body, {
  target: '#navbar-example'
})

Awọn ibi-afẹde ID ti o yanju nilo

Awọn ọna asopọ Navbar gbọdọ ni awọn ibi-afẹde id ti o yanju. Fun apẹẹrẹ, <a href="#home">home</a>gbọdọ ṣe deede si nkan kan ninu DOM bii <div id="home"></div>.

Awọn eroja ibi-afẹde ti ko han foju foju pana

Awọn eroja ibi-afẹde ti ko han ni yoo kọbikita ati pe awọn nkan nav ti o baamu wọn kii yoo ṣe afihan.

Awọn ọna

sọdọtun

Nigbati o ba nlo scrollspy ni apapo pẹlu fifi kun tabi yiyọ awọn eroja kuro lati DOM, iwọ yoo nilo lati pe ọna isọdọtun bii bẹ:

var dataSpyList = [].slice.call(document.querySelectorAll('[data-bs-spy="scroll"]'))
dataSpyList.forEach(function (dataSpyEl) {
  bootstrap.ScrollSpy.getInstance(dataSpyEl)
    .refresh()
})

sọnù

Pa ohun ano ká scrollspy. (Yọ data ti o fipamọ sori nkan DOM kuro)

gbaInstance

Ọna aimi eyiti o fun ọ laaye lati gba apẹẹrẹ scrollspy ti o ni nkan ṣe pẹlu nkan DOM kan

var scrollSpyContentEl = document.getElementById('content')
var scrollSpy = bootstrap.ScrollSpy.getInstance(scrollSpyContentEl) // Returns a Bootstrap scrollspy instance

gbaOrCreateInstance

Ọna aimi eyiti o fun ọ laaye lati gba apẹẹrẹ scrollspy ti o ni nkan ṣe pẹlu nkan DOM kan, tabi ṣẹda ọkan tuntun ti o ko ba ṣe ipilẹṣẹ

var scrollSpyContentEl = document.getElementById('content')
var scrollSpy = bootstrap.ScrollSpy.getOrCreateInstance(scrollSpyContentEl) // Returns a Bootstrap scrollspy instance

Awọn aṣayan

Awọn aṣayan le ṣee kọja nipasẹ awọn abuda data tabi JavaScript. Fun awọn abuda data, fi orukọ aṣayan si data-bs-, bi ninu data-bs-offset="".

Oruko	Iru	Aiyipada	Apejuwe
`offset`	nọmba	`10`	Awọn piksẹli lati aiṣedeede lati oke nigbati o ṣe iṣiro ipo ti yi lọ.
`method`	okun	`auto`	Wiwa apakan wo ni eroja amí wa ninu. `auto`yoo yan ọna ti o dara julọ lati gba awọn ipoidojuko yi lọ. `offset`yoo lo `Element.getBoundingClientRect()`ọna lati gba awọn ipoidojuko yi lọ. `position`yoo lo `HTMLElement.offsetTop`ati awọn `HTMLElement.offsetLeft`ohun-ini lati gba awọn ipoidojuko yi lọ.
`target`	okun \| ohun jQuery \| DOM eroja		Ni pato eroja lati lo ohun itanna Scrollpy.

Awọn iṣẹlẹ

Iru iṣẹlẹ	Apejuwe
`activate.bs.scrollspy`	Iṣẹlẹ yi ina lori awọn yi ano nigbakugba ti a titun ohun kan di mu šišẹ nipasẹ awọn scrollspy.

var firstScrollSpyEl = document.querySelector('[data-bs-spy="scroll"]')
firstScrollSpyEl.addEventListener('activate.bs.scrollspy', function () {
  // do something...
})

Scrollspy

Bawo ni o ṣe n ṣiṣẹ

Awọn apoti ti o le yi lọ ati iwọle si keyboard

Apeere ni navbar

Ibẹrẹ akọkọ

Akole keji

Akọle kẹta

Akọle kẹrin

Akọle karun

Apeere pẹlu iteeye nav

Nkan 1

Nkan 1-1

Nkan 1-2

Nkan 2

Nkan 3

Nkan 3-1

Nkan 3-2

Apẹẹrẹ pẹlu ẹgbẹ-akojọ

Nkan 1

Nkan 2

Nkan 3

Nkan 4

Lilo

Nipasẹ awọn abuda data

Nipasẹ JavaScript

Awọn ibi-afẹde ID ti o yanju nilo

Awọn eroja ibi-afẹde ti ko han foju foju pana

Awọn ọna

sọdọtun

sọnù

gbaInstance

gbaOrCreateInstance

Awọn aṣayan

Awọn iṣẹlẹ