Awọn idasile

Yipada awọn agbekọja ọrọ-ọrọ fun iṣafihan awọn atokọ ti awọn ọna asopọ ati diẹ sii pẹlu ohun itanna silẹ Bootstrap.

Akopọ

Awọn isubu jẹ iyipada, awọn agbekọja ọrọ-ọrọ fun iṣafihan awọn atokọ ti awọn ọna asopọ ati diẹ sii. Wọn jẹ ibaraenisepo pẹlu ohun itanna JavaScript dropdown Bootstrap to wa. Wọn ti yipada nipasẹ titẹ, kii ṣe nipa gbigbe; eyi jẹ ipinnu apẹrẹ ero inu.

Awọn idasile ti wa ni itumọ ti lori ile-ikawe ẹnikẹta, Popper.js , eyiti o pese ipo agbara ati wiwa wiwo wiwo. Rii daju pe o ni popper.min.js ṣaaju Bootstrap's JavaScript tabi lo bootstrap.bundle.min.js/ bootstrap.bundle.jseyiti o ni Popper.js ninu. Popper.js ko lo si ipo awọn silẹ ni awọn navbars botilẹjẹpe ipo ti o ni agbara ko nilo.

Ti o ba n kọ JavaScript wa lati orisun, o niloutil.js .

Wiwọle

Boṣewa WAI ARIA role="menu" n ṣalaye ẹrọ ailorukọ gangan , ṣugbọn eyi jẹ pato si awọn akojọ aṣayan ohun elo ti o nfa awọn iṣe tabi awọn iṣẹ. Awọn akojọ aṣayan ARIA le ni awọn ohun akojọ aṣayan nikan, awọn apoti akojọ aṣayan apoti, awọn ohun akojọ aṣayan bọtini redio, awọn ẹgbẹ bọtini redio, ati awọn akojọ aṣayan-ipin.

Bootstrap's dropdowns, ni ida keji, jẹ apẹrẹ lati jẹ jeneriki ati iwulo si ọpọlọpọ awọn ipo ati awọn ẹya isamisi. Fun apẹẹrẹ, o ṣee ṣe lati ṣẹda awọn silẹ ti o ni awọn igbewọle afikun ninu ati awọn idari fọọmu, gẹgẹbi awọn aaye wiwa tabi awọn fọọmu iwọle. Fun idi eyi, Bootstrap ko nireti (tabi ṣafikun laifọwọyi) eyikeyi roleati awọn aria-abuda ti o nilo fun awọn akojọ aṣayan ARIA otitọ. Awọn onkọwe yoo ni lati ṣafikun awọn abuda kan pato diẹ sii funrararẹ.

Bibẹẹkọ, Bootstrap ṣe afikun atilẹyin ti a ṣe sinu pupọ julọ awọn ibaraenisọrọ akojọ aṣayan bọtini itẹwe, gẹgẹbi agbara lati gbe nipasẹ awọn .dropdown-itemeroja kọọkan nipa lilo awọn bọtini kọsọ ati pa akojọ aṣayan pẹlu ESCbọtini.

Awọn apẹẹrẹ

Fi ipari si toggle dropdown (bọtini tabi ọna asopọ rẹ) ati akojọ aṣayan silẹ laarin .dropdown, tabi nkan miiran ti o sọ position: relative;. Awọn idasile le jẹ okunfa lati <a>tabi <button>awọn eroja lati baamu awọn iwulo agbara rẹ dara julọ.

Awọn silẹ bọtini ẹyọkan

Eyikeyi ẹyọkan .btnle yipada si yiyi silẹ silẹ pẹlu diẹ ninu awọn iyipada isamisi. Eyi ni bii o ṣe le fi wọn ṣiṣẹ pẹlu awọn <button>eroja mejeeji:

<div class="dropdown">
  <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    Dropdown button
  </button>
  <div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
    <a class="dropdown-item" href="#">Action</a>
    <a class="dropdown-item" href="#">Another action</a>
    <a class="dropdown-item" href="#">Something else here</a>
  </div>
</div>

Ati pẹlu <a>awọn eroja:

<div class="dropdown show">
  <a class="btn btn-secondary dropdown-toggle" href="#" role="button" id="dropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    Dropdown link
  </a>

  <div class="dropdown-menu" aria-labelledby="dropdownMenuLink">
    <a class="dropdown-item" href="#">Action</a>
    <a class="dropdown-item" href="#">Another action</a>
    <a class="dropdown-item" href="#">Something else here</a>
  </div>
</div>

Apakan ti o dara julọ ni pe o le ṣe eyi pẹlu iyatọ bọtini eyikeyi, paapaa:

<!-- Example single danger button -->
<div class="btn-group">
  <button type="button" class="btn btn-danger dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    Action
  </button>
  <div class="dropdown-menu">
    <a class="dropdown-item" href="#">Action</a>
    <a class="dropdown-item" href="#">Another action</a>
    <a class="dropdown-item" href="#">Something else here</a>
    <div class="dropdown-divider"></div>
    <a class="dropdown-item" href="#">Separated link</a>
  </div>
</div>

Pipin bọtini dropdowns

Bakanna, ṣẹda awọn ifasilẹ bọtini pipin pẹlu isamisi isamisi kanna bi awọn silẹ bọtini ẹyọkan, ṣugbọn pẹlu afikun .dropdown-toggle-splitfun aye to dara ni ayika itọju sisọ silẹ.

A lo kilasi afikun yii lati dinku petele paddingni ẹgbẹ mejeeji ti itọju nipasẹ 25% ati yọkuro margin-lefteyiti o ṣafikun fun awọn silẹ bọtini deede. Awọn iyipada afikun wọnyẹn jẹ ki abojuto dojukọ ni bọtini pipin ati pese agbegbe ti o ni iwọn deede diẹ sii lẹgbẹẹ bọtini akọkọ.

<!-- Example split danger button -->
<div class="btn-group">
  <button type="button" class="btn btn-danger">Action</button>
  <button type="button" class="btn btn-danger dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    <span class="sr-only">Toggle Dropdown</span>
  </button>
  <div class="dropdown-menu">
    <a class="dropdown-item" href="#">Action</a>
    <a class="dropdown-item" href="#">Another action</a>
    <a class="dropdown-item" href="#">Something else here</a>
    <div class="dropdown-divider"></div>
    <a class="dropdown-item" href="#">Separated link</a>
  </div>
</div>

Titobi

Bọtini sisọ silẹ ṣiṣẹ pẹlu awọn bọtini ti gbogbo titobi, pẹlu aiyipada ati awọn bọtini itusilẹ pipin.

<!-- Large button groups (default and split) -->
<div class="btn-group">
  <button class="btn btn-secondary btn-lg dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    Large button
  </button>
  <div class="dropdown-menu">
    ...
  </div>
</div>
<div class="btn-group">
  <button class="btn btn-secondary btn-lg" type="button">
    Large split button
  </button>
  <button type="button" class="btn btn-lg btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    <span class="sr-only">Toggle Dropdown</span>
  </button>
  <div class="dropdown-menu">
    ...
  </div>
</div>

<!-- Small button groups (default and split) -->
<div class="btn-group">
  <button class="btn btn-secondary btn-sm dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    Small button
  </button>
  <div class="dropdown-menu">
    ...
  </div>
</div>
<div class="btn-group">
  <button class="btn btn-secondary btn-sm" type="button">
    Small split button
  </button>
  <button type="button" class="btn btn-sm btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    <span class="sr-only">Toggle Dropdown</span>
  </button>
  <div class="dropdown-menu">
    ...
  </div>
</div>

Iyatọ silẹ

Ṣe okunfa awọn akojọ aṣayan silẹ loke awọn eroja nipa fifi kun .dropupsi eroja obi.

<!-- Default dropup button -->
<div class="btn-group dropup">
  <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    Dropup
  </button>
  <div class="dropdown-menu">
    <!-- Dropdown menu links -->
  </div>
</div>

<!-- Split dropup button -->
<div class="btn-group dropup">
  <button type="button" class="btn btn-secondary">
    Split dropup
  </button>
  <button type="button" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    <span class="sr-only">Toggle Dropdown</span>
  </button>
  <div class="dropdown-menu">
    <!-- Dropdown menu links -->
  </div>
</div>

Dropright iyatọ

Nfa awọn akojọ aṣayan silẹ ni apa ọtun ti awọn eroja nipa fifi kun .droprightsi eroja obi.

<!-- Default dropright button -->
<div class="btn-group dropright">
  <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    Dropright
  </button>
  <div class="dropdown-menu">
    <!-- Dropdown menu links -->
  </div>
</div>

<!-- Split dropright button -->
<div class="btn-group dropright">
  <button type="button" class="btn btn-secondary">
    Split dropright
  </button>
  <button type="button" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    <span class="sr-only">Toggle Dropright</span>
  </button>
  <div class="dropdown-menu">
    <!-- Dropdown menu links -->
  </div>
</div>

Iyatọ sisọ silẹ

Nfa awọn akojọ aṣayan silẹ ni apa osi ti awọn eroja nipa fifi kun .dropleftsi eroja obi.

<!-- Default dropleft button -->
<div class="btn-group dropleft">
  <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    Dropleft
  </button>
  <div class="dropdown-menu">
    <!-- Dropdown menu links -->
  </div>
</div>

<!-- Split dropleft button -->
<div class="btn-group">
  <div class="btn-group dropleft" role="group">
    <button type="button" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
      <span class="sr-only">Toggle Dropleft</span>
    </button>
    <div class="dropdown-menu">
      <!-- Dropdown menu links -->
    </div>
  </div>
  <button type="button" class="btn btn-secondary">
    Split dropleft
  </button>
</div>

Awọn akoonu akojọ aṣayan silẹ itan-akọọlẹ gbọdọ jẹ awọn ọna asopọ, ṣugbọn iyẹn kii ṣe ọran mọ pẹlu v4. Bayi o le ni iyan lo <button>awọn eroja ninu rẹ dropdowns dipo ti o kan <a>s.

<div class="dropdown">
  <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenu2" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    Dropdown
  </button>
  <div class="dropdown-menu" aria-labelledby="dropdownMenu2">
    <button class="dropdown-item" type="button">Action</button>
    <button class="dropdown-item" type="button">Another action</button>
    <button class="dropdown-item" type="button">Something else here</button>
  </div>
</div>

Nipa aiyipada, akojọ aṣayan silẹ ti wa ni ipo laifọwọyi 100% lati oke ati ni apa osi ti obi rẹ. Fikun -un .dropdown-menu-rightsi .dropdown-menuapa ọtun mö akojọ aṣayan silẹ.

Efeti sile! Dropdowns wa ni ipo ọpẹ si Popper.js (ayafi nigba ti won ti wa ni o wa ninu a navbar).

<div class="btn-group">
  <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    Right-aligned menu
  </button>
  <div class="dropdown-menu dropdown-menu-right">
    <button class="dropdown-item" type="button">Action</button>
    <button class="dropdown-item" type="button">Another action</button>
    <button class="dropdown-item" type="button">Something else here</button>
  </div>
</div>

Ṣafikun akọsori kan si aami awọn apakan awọn iṣe ni eyikeyi akojọ aṣayan silẹ.

<div class="dropdown-menu">
  <h6 class="dropdown-header">Dropdown header</h6>
  <a class="dropdown-item" href="#">Action</a>
  <a class="dropdown-item" href="#">Another action</a>
</div>

Awọn ẹgbẹ ọtọtọ ti awọn ohun akojọ aṣayan ti o jọmọ pẹlu onipinpin.

<div class="dropdown-menu">
  <a class="dropdown-item" href="#">Action</a>
  <a class="dropdown-item" href="#">Another action</a>
  <a class="dropdown-item" href="#">Something else here</a>
  <div class="dropdown-divider"></div>
  <a class="dropdown-item" href="#">Separated link</a>
</div>

Fi fọọmu kan sinu akojọ aṣayan silẹ, tabi ṣe sinu akojọ aṣayan silẹ, ati lo ala tabi awọn ohun elo padding lati fun ni aaye odi ti o nilo.

<div class="dropdown-menu">
  <form class="px-4 py-3">
    <div class="form-group">
      <label for="exampleDropdownFormEmail1">Email address</label>
      <input type="email" class="form-control" id="exampleDropdownFormEmail1" placeholder="[email protected]">
    </div>
    <div class="form-group">
      <label for="exampleDropdownFormPassword1">Password</label>
      <input type="password" class="form-control" id="exampleDropdownFormPassword1" placeholder="Password">
    </div>
    <div class="form-check">
      <input type="checkbox" class="form-check-input" id="dropdownCheck">
      <label class="form-check-label" for="dropdownCheck">
        Remember me
      </label>
    </div>
    <button type="submit" class="btn btn-primary">Sign in</button>
  </form>
  <div class="dropdown-divider"></div>
  <a class="dropdown-item" href="#">New around here? Sign up</a>
  <a class="dropdown-item" href="#">Forgot password?</a>
</div>

<form class="dropdown-menu p-4">
  <div class="form-group">
    <label for="exampleDropdownFormEmail2">Email address</label>
    <input type="email" class="form-control" id="exampleDropdownFormEmail2" placeholder="[email protected]">
  </div>
  <div class="form-group">
    <label for="exampleDropdownFormPassword2">Password</label>
    <input type="password" class="form-control" id="exampleDropdownFormPassword2" placeholder="Password">
  </div>
  <div class="form-check">
    <input type="checkbox" class="form-check-input" id="dropdownCheck2">
    <label class="form-check-label" for="dropdownCheck2">
      Remember me
    </label>
  </div>
  <button type="submit" class="btn btn-primary">Sign in</button>
</form>

Ṣafikun .activeawọn ohun kan ninu sisọ silẹ lati ṣe ara wọn bi lọwọ .

<div class="dropdown-menu">
  <a class="dropdown-item" href="#">Regular link</a>
  <a class="dropdown-item active" href="#">Active link</a>
  <a class="dropdown-item" href="#">Another link</a>
</div>

Ṣafikun .disabledawọn ohun kan ninu sisọ silẹ lati ṣe ara wọn bi alaabo .

<div class="dropdown-menu">
  <a class="dropdown-item" href="#">Regular link</a>
  <a class="dropdown-item disabled" href="#">Disabled link</a>
  <a class="dropdown-item" href="#">Another link</a>
</div>

Lilo

Nipasẹ awọn abuda data tabi JavaScript, ohun itanna sisọ silẹ yipada akoonu ti o farapamọ (awọn akojọ aṣayan silẹ) nipa yiyi .showkilaasi lori ohun atokọ obi. Ẹya data-toggle="dropdown"naa gbarale fun pipade awọn akojọ aṣayan silẹ ni ipele ohun elo, nitorinaa o jẹ imọran ti o dara lati lo nigbagbogbo.

Lori awọn ẹrọ ti a fi ọwọ kan, ṣiṣi silẹ silẹ yoo ṣafikun ofo ( $.noop) mouseoverawọn olutọju si awọn ọmọ lẹsẹkẹsẹ ti <body>nkan naa. Eleyi Admittedly ilosiwaju gige jẹ pataki lati ṣiṣẹ ni ayika a quirk ni iOS' iṣẹlẹ aṣoju , eyi ti yoo bibẹkọ ti se kan tẹ ni kia kia nibikibi ti ita ti awọn dropdown lati nfa awọn koodu ti o tilekun awọn dropdown. Ni kete ti awọn dropdown ti wa ni pipade, awọn afikun sofo mouseovermimu ti wa ni kuro.

Nipasẹ awọn abuda data

Ṣafikun data-toggle="dropdown"si ọna asopọ kan tabi bọtini lati yi jisilẹ silẹ.

<div class="dropdown">
  <button id="dLabel" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    Dropdown trigger
  </button>
  <div class="dropdown-menu" aria-labelledby="dLabel">
    ...
  </div>
</div>

Nipasẹ JavaScript

Pe awọn silẹ nipasẹ JavaScript:

$('.dropdown-toggle').dropdown()

`data-toggle="dropdown"`si tun beere

Laibikita boya o pe dropdown rẹ nipasẹ JavaScript tabi dipo lo data-api, data-toggle="dropdown"nigbagbogbo nilo lati wa lori eroja okunfa dropdown.

Awọn aṣayan

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

Oruko	Iru	Aiyipada	Apejuwe
aiṣedeede	nọmba \| okun \| iṣẹ	0	Aiṣedeede ti sisọ silẹ ni ibatan si ibi-afẹde rẹ. Fun alaye diẹ sii tọka si awọn iwe aiṣedeede Popper.js .
isipade	boolianu	ooto	Gba silẹ silẹ lati yi pada ni ọran ti agbekọja lori eroja itọkasi. Fun alaye diẹ sii tọka si awọn iwe aṣẹ isipade Popper.js .
ààlà	okun \| eroja	'yi lọ Obi'	Ààlà ìkálọ́wọ́kò àkúnwọ́sílẹ̀ ti àtòjọ ìsokọ̀sílẹ̀. Gba awọn iye ti `'viewport'`, `'window'`, `'scrollParent'`, tabi itọkasi HTMLElement (JavaScript nikan). Fun alaye diẹ sii tọka si Popper.js's preventOverflow docs .

Akiyesi nigbati boundaryo ti ṣeto si eyikeyi iye miiran ju 'scrollParent', ara ti position: staticwa ni loo si awọn .dropdowneiyan.

Awọn ọna

Ọna	Apejuwe
`$().dropdown('toggle')`	Yipada akojọ aṣayan-silẹ ti navbar ti a fun tabi lilọ kiri taabu.
`$().dropdown('update')`	Ṣe imudojuiwọn ipo sisọ silẹ eroja kan.
`$().dropdown('dispose')`	Pa ohun ano ká dropdown.

Awọn iṣẹlẹ

Gbogbo dropdown iṣẹlẹ ti wa ni kuro lenu ise ni .dropdown-menu's obi ano ati ki o ni a relatedTargetohun ini, ti iye ni toggling oran ano.

Iṣẹlẹ	Apejuwe
`show.bs.dropdown`	Yi iṣẹlẹ ina lẹsẹkẹsẹ nigbati awọn show apẹẹrẹ ọna ti a npe ni.
`shown.bs.dropdown`	Iṣẹlẹ yii jẹ ina nigbati sisọ silẹ ti jẹ ki o han si olumulo (yoo duro fun awọn iyipada CSS, lati pari).
`hide.bs.dropdown`	Iṣẹlẹ yii jẹ ina lẹsẹkẹsẹ nigbati ọna apẹẹrẹ pamọ ti pe.
`hidden.bs.dropdown`	Iṣẹlẹ yii jẹ ina nigbati sisọ silẹ ba ti pari fifipamọ lati ọdọ olumulo (yoo duro fun awọn iyipada CSS, lati pari).

$('#myDropdown').on('show.bs.dropdown', function () {
  // do something…
})

Awọn idasile

Akopọ

Wiwọle

Awọn apẹẹrẹ

Awọn silẹ bọtini ẹyọkan

Pipin bọtini dropdowns

Titobi

Iyatọ silẹ

Dropright iyatọ

Iyatọ sisọ silẹ

Awọn ohun akojọ aṣayan

Titete akojọ aṣayan

Awọn akọle akojọ aṣayan

Akojọ aṣyn pin

Awọn fọọmu akojọ aṣayan

Awọn ohun akojọ aṣayan ti nṣiṣe lọwọ

Awọn ohun akojọ aṣayan alaabo

Lilo

Nipasẹ awọn abuda data

Nipasẹ JavaScript

`data-toggle="dropdown"`si tun beere

Awọn aṣayan

Awọn ọna

Awọn iṣẹlẹ

Awọn idasile

Akopọ

Wiwọle

Awọn apẹẹrẹ

Awọn silẹ bọtini ẹyọkan

Pipin bọtini dropdowns

Titobi

Iyatọ silẹ

Dropright iyatọ

Iyatọ sisọ silẹ

Awọn ohun akojọ aṣayan

Titete akojọ aṣayan

Awọn akọle akojọ aṣayan

Akọsori silẹ

Akojọ aṣyn pin

Awọn fọọmu akojọ aṣayan

Awọn ohun akojọ aṣayan ti nṣiṣe lọwọ

Awọn ohun akojọ aṣayan alaabo

Lilo

Nipasẹ awọn abuda data

Nipasẹ JavaScript

data-toggle="dropdown"si tun beere

Awọn aṣayan

Awọn ọna

Awọn iṣẹlẹ

`data-toggle="dropdown"`si tun beere