Aqbeż għall-kontenut prinċipali Aqbeż għan-navigazzjoni tad-dokumenti
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Navbar

Dokumentazzjoni u eżempji għall-header tan-navigazzjoni b'saħħtu u reattiv ta' Bootstrap, in-navbar. Jinkludi appoġġ għal branding, navigazzjoni, u aktar, inkluż appoġġ għall-plugin tal-kollass tagħna.

Fuq din il-paġna

Kif taħdem

Hawn dak li għandek bżonn tkun taf qabel tibda bin-navbar:

  • In-Navbars jeħtieġu tgeżwir .navbarbi għal klassijiet ta' skema ta' skema ta' .navbar-expand{-sm|-md|-lg|-xl|-xxl}kollass u ta' kuluri li jirrispondu.
  • In-Navbars u l-kontenut tagħhom huma fluwidi awtomatikament. Ibdel il- kontenitur biex tillimita l-wisa 'orizzontali tagħhom b'modi differenti.
  • Uża l-klassijiet tal-utilità tal- ispazjar u l- flex tagħna biex tikkontrolla l-ispazjar u l-allinjament fi ħdan in-navbars.
  • In-Navbars jirrispondu awtomatikament, iżda tista 'faċilment timmodifikahom biex tbiddel dan. L-imġieba reattiva tiddependi fuq il-plugin JavaScript tagħna Kollass.
  • Żgura l-aċċessibbiltà billi tuża <nav>element jew, jekk tuża element aktar ġeneriku bħal <div>, żid a role="navigation"ma' kull navbar biex tidentifikaha b'mod espliċitu bħala reġjun importanti għall-utenti ta' teknoloġiji ta' assistenza.
  • Indika l-oġġett kurrenti billi tuża aria-current="page"għall-paġna kurrenti jew aria-current="true"għall-oġġett kurrenti f'sett.
  • Ġdid f'v5.2.0: Navbars jistgħu jkunu temati b'varjabbli CSS li huma skoperti għall- .navbarklassi bażi. .navbar-lightġie deprecated u .navbar-darkġie miktub mill-ġdid biex jissupera l-varjabbli CSS minflok ma żżid stili addizzjonali.
L-effett ta 'animazzjoni ta' dan il-komponent jiddependi fuq il prefers-reduced-motion-mistoqsija tal-midja. Ara t- taqsima tal-mozzjoni mnaqqsa tad-dokumentazzjoni tagħna dwar l-aċċessibbiltà .

Kontenut appoġġjat

Navbars jiġu b'appoġġ integrat għal numru żgħir ta 'sottokomponenti. Agħżel minn dawn li ġejjin kif meħtieġ:

  • .navbar-brandgħall-kumpanija, prodott, jew isem tal-proġett tiegħek.
  • .navbar-navgħal navigazzjoni ta' għoli sħiħ u ħafifa (inkluż appoġġ għal dropdowns).
  • .navbar-togglergħall-użu mal-plugin kollass tagħna u imgieba oħra ta 'toggling tan-navigazzjoni .
  • Flex u utilitajiet ta 'spazjar għal kwalunkwe kontrolli u azzjonijiet tal-forma.
  • .navbar-textgħaż-żieda ta' kordi ta' test ċċentrata vertikalment.
  • .collapse.navbar-collapsegħall-raggruppament u l-ħabi tal-kontenut tan-navbar minn breakpoint ġenitur.
  • Żid fakultattiv .navbar-scrollbiex tissettja max-heightu tiskrollja kontenut ta' navbar estiż .

Hawn eżempju tas-sottokomponenti kollha inklużi f'navbar b'tema ħafifa li tirrispondi li awtomatikament tikkollassa fil- lgpunt ta 'waqfien (kbir).

html 
<nav class="navbar navbar-expand-lg bg-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Navbar</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarSupportedContent">
      <ul class="navbar-nav me-auto mb-2 mb-lg-0">
        <li class="nav-item">
          <a class="nav-link active" aria-current="page" href="#">Home</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item dropdown">
          <a class="nav-link dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown" aria-expanded="false">
            Dropdown
          </a>
          <ul class="dropdown-menu">
            <li><a class="dropdown-item" href="#">Action</a></li>
            <li><a class="dropdown-item" href="#">Another action</a></li>
            <li><hr class="dropdown-divider"></li>
            <li><a class="dropdown-item" href="#">Something else here</a></li>
          </ul>
        </li>
        <li class="nav-item">
          <a class="nav-link disabled">Disabled</a>
        </li>
      </ul>
      <form class="d-flex" role="search">
        <input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
        <button class="btn btn-outline-success" type="submit">Search</button>
      </form>
    </div>
  </div>
</nav>

Dan l-eżempju juża klassijiet ta' utilità fl- isfond ( bg-light) u spazjar ( me-auto, mb-2, mb-lg-0, ).me-2

Brand

Jista ' .navbar-brandjiġi applikat għal ħafna elementi, iżda ankra taħdem l-aħjar, peress li xi elementi jistgħu jeħtieġu klassijiet ta' utilità jew stili tad-dwana.

Test

Żid it-test tiegħek f'element mal- .navbar-brandklassi.

html 
<!-- As a link -->
<nav class="navbar bg-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Navbar</a>
  </div>
</nav>

<!-- As a heading -->
<nav class="navbar bg-light">
  <div class="container-fluid">
    <span class="navbar-brand mb-0 h1">Navbar</span>
  </div>
</nav>

Immaġni

Tista' tissostitwixxi t-test fi ħdan il- .navbar-brandb' <img>.

html 
<nav class="navbar bg-light">
  <div class="container">
    <a class="navbar-brand" href="#">
      <img src="/docs/5.2/assets/brand/bootstrap-logo.svg" alt="Bootstrap" width="30" height="24">
    </a>
  </div>
</nav>

Immaġini u test

Tista 'wkoll tagħmel użu minn xi utilitajiet addizzjonali biex iżżid immaġni u test fl-istess ħin. Innota ż-żieda ta' .d-inline-blocku .align-text-topfuq il- <img>.

html 
<nav class="navbar bg-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">
      <img src="/docs/5.2/assets/brand/bootstrap-logo.svg" alt="Logo" width="30" height="24" class="d-inline-block align-text-top">
      Bootstrap
    </a>
  </div>
</nav>

Ir-rabtiet tan-navigazzjoni tan-Navbar jibnu fuq l- .navgħażliet tagħna bil-klassi modifikatur tagħhom stess u jeħtieġu l-użu ta ' klassijiet toggler għal stil reattiv xieraq. In-navigazzjoni fin-navbars se tikber ukoll biex tokkupa spazju orizzontali kemm jista' jkun biex iżżomm il-kontenut tan-navbar tiegħek allinjat b'mod sikur.

Żid il- .activeklassi fuq .nav-linkbiex tindika l-paġna attwali.

Jekk jogħġbok innota li għandek iżżid ukoll l- aria-currentattribut fuq l-attiv .nav-link.

html 
<nav class="navbar navbar-expand-lg bg-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Navbar</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarNav">
      <ul class="navbar-nav">
        <li class="nav-item">
          <a class="nav-link active" aria-current="page" href="#">Home</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Features</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Pricing</a>
        </li>
        <li class="nav-item">
          <a class="nav-link disabled">Disabled</a>
        </li>
      </ul>
    </div>
  </div>
</nav>

U minħabba li nużaw klassijiet għan-navs tagħna, tista' tevita kompletament l-approċċ ibbażat fuq il-lista jekk tixtieq.

html 
<nav class="navbar navbar-expand-lg bg-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Navbar</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarNavAltMarkup">
      <div class="navbar-nav">
        <a class="nav-link active" aria-current="page" href="#">Home</a>
        <a class="nav-link" href="#">Features</a>
        <a class="nav-link" href="#">Pricing</a>
        <a class="nav-link disabled">Disabled</a>
      </div>
    </div>
  </div>
</nav>

Tista 'wkoll tuża dropdowns fin-navbar tiegħek. Il-menus dropdown jeħtieġu element tat-tgeżwir għall-ippożizzjonar, għalhekk kun żgur li tuża elementi separati u nested għal .nav-itemu .nav-linkkif muri hawn taħt.

html 
<nav class="navbar navbar-expand-lg bg-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Navbar</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarNavDropdown">
      <ul class="navbar-nav">
        <li class="nav-item">
          <a class="nav-link active" aria-current="page" href="#">Home</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Features</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Pricing</a>
        </li>
        <li class="nav-item dropdown">
          <a class="nav-link dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown" aria-expanded="false">
            Dropdown link
          </a>
          <ul class="dropdown-menu">
            <li><a class="dropdown-item" href="#">Action</a></li>
            <li><a class="dropdown-item" href="#">Another action</a></li>
            <li><a class="dropdown-item" href="#">Something else here</a></li>
          </ul>
        </li>
      </ul>
    </div>
  </div>
</nav>

Formoli

Poġġi diversi kontrolli tal-forma u komponenti fi ħdan navbar:

html 
<nav class="navbar bg-light">
  <div class="container-fluid">
    <form class="d-flex" role="search">
      <input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
      <button class="btn btn-outline-success" type="submit">Search</button>
    </form>
  </div>
</nav>

Elementi tfal immedjati ta ' .navbarużu flex layout u default għal justify-content: space-between. Uża utilitajiet flex addizzjonali kif meħtieġ biex taġġusta din l-imġieba.

html 
<nav class="navbar bg-light">
  <div class="container-fluid">
    <a class="navbar-brand">Navbar</a>
    <form class="d-flex" role="search">
      <input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
      <button class="btn btn-outline-success" type="submit">Search</button>
    </form>
  </div>
</nav>

Il-gruppi tal-input jaħdmu wkoll. Jekk in-navbar tiegħek hija formola sħiħa, jew l-aktar forma, tista 'tuża l- <form>element bħala l-kontenitur u tiffranka xi HTML.

html 
<nav class="navbar bg-light">
  <form class="container-fluid">
    <div class="input-group">
      <span class="input-group-text" id="basic-addon1">@</span>
      <input type="text" class="form-control" placeholder="Username" aria-label="Username" aria-describedby="basic-addon1">
    </div>
  </form>
</nav>

Diversi buttuni huma appoġġjati wkoll bħala parti minn dawn il-formoli tan-navbar. Din hija wkoll tfakkira kbira li l-utilitajiet ta 'allinjament vertikali jistgħu jintużaw biex jallinjaw elementi ta' daqs differenti.

html 
<nav class="navbar bg-light">
  <form class="container-fluid justify-content-start">
    <button class="btn btn-outline-success me-2" type="button">Main button</button>
    <button class="btn btn-sm btn-outline-secondary" type="button">Smaller button</button>
  </form>
</nav>

Test

Navbars jista 'jkun fihom bits ta' test bl-għajnuna ta ' .navbar-text. Din il-klassi taġġusta l-allinjament vertikali u l-ispazjar orizzontali għall-kordi tat-test.

html 
<nav class="navbar bg-light">
  <div class="container-fluid">
    <span class="navbar-text">
      Navbar text with an inline element
    </span>
  </div>
</nav>

Ħallat u qabbel ma 'komponenti u utilitajiet oħra kif meħtieġ.

html 
<nav class="navbar navbar-expand-lg bg-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Navbar w/ text</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarText" aria-controls="navbarText" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarText">
      <ul class="navbar-nav me-auto mb-2 mb-lg-0">
        <li class="nav-item">
          <a class="nav-link active" aria-current="page" href="#">Home</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Features</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Pricing</a>
        </li>
      </ul>
      <span class="navbar-text">
        Navbar text with an inline element
      </span>
    </div>
  </div>
</nav>

Skemi tal-kulur

Ġdid fi v5.2.0: It-tema tan- Navbar issa hija mħaddma minn varjabbli CSS u .navbar-lightġiet deprecata. Il-varjabbli tas-CSS huma applikati għal .navbar, b'kontumaċja għad-dehra "ħafifa", u jistgħu jiġu sostitwiti b' .navbar-dark.

Temi Navbar huma aktar faċli minn qatt qabel grazzi għall-kombinazzjoni ta 'Bootstrap ta' varjabbli Sass u CSS. Id-default huwa "light navbar" tagħna għall-użu ma 'kuluri ta' sfond ċar, iżda tista 'wkoll tapplika .navbar-darkgħal kuluri ta' sfond skur. Imbagħad, ippersonalizza bl- .bg-*utilitajiet.

<nav class="navbar navbar-dark bg-dark">
  <!-- Navbar content -->
</nav>

<nav class="navbar navbar-dark bg-primary">
  <!-- Navbar content -->
</nav>

<nav class="navbar" style="background-color: #e3f2fd;">
  <!-- Navbar content -->
</nav>

Kontenituri

Għalkemm mhux meħtieġ, tista' tgeżwer navbar f'biċ .containerbiex tiċċentraha fuq paġna, għalkemm innota li kontenitur ta' ġewwa għadu meħtieġ. Jew tista 'żżid kontenitur ġewwa l- biċ .navbar-ċentru biss tal-kontenut ta' navbar ta 'fuq fiss jew statiku .

html 
<div class="container">
  <nav class="navbar navbar-expand-lg bg-light">
    <div class="container-fluid">
      <a class="navbar-brand" href="#">Navbar</a>
    </div>
  </nav>
</div>

Uża xi wieħed mill-kontenituri li jirrispondu biex tibdel kemm hu ppreżentat il-kontenut fin-navbar tiegħek.

html 
<nav class="navbar navbar-expand-lg bg-light">
  <div class="container-md">
    <a class="navbar-brand" href="#">Navbar</a>
  </div>
</nav>

Pjazzament

Uża l- utilitajiet tal-pożizzjoni tagħna biex tpoġġi navbars f'pożizzjonijiet mhux statiċi. Agħżel minn imwaħħal mal-quċċata, imwaħħal mal-qiegħ, imwaħħal mal-wiċċ (jiskrollja mal-paġna sakemm tasal fil-quċċata, imbagħad tibqa' hemm), jew imwaħħal mal-qiegħ (jiskrollja mal-paġna sakemm tasal fil-qiegħ, imbagħad tibqa') hemm).

Navbars fissi jużaw position: fixed, li jfisser li qed jinġibdu mill-fluss normali tad-DOM u jistgħu jeħtieġu CSS personalizzati (eż., padding-topfuq il- <body>) biex jipprevjenu koinċidenza ma 'elementi oħra.

html 
<nav class="navbar bg-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Default</a>
  </div>
</nav>
html 
<nav class="navbar fixed-top bg-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Fixed top</a>
  </div>
</nav>
html 
<nav class="navbar fixed-bottom bg-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Fixed bottom</a>
  </div>
</nav>
html 
<nav class="navbar sticky-top bg-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Sticky top</a>
  </div>
</nav>
html 
<nav class="navbar sticky-bottom bg-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Sticky bottom</a>
  </div>
</nav>

Skrolljar

Żid .navbar-nav-scrollma' .navbar-nav(jew sub-komponent ieħor tan-navbar) biex tippermetti scrolling vertikali fi ħdan il-kontenuti li jistgħu jiġu togglebbli ta' navbar imġarraf. B'mod awtomatiku, is-scrolling jibda fi 75vh(jew 75% tal-għoli tal-vetrina), iżda tista' tegħleb dak bil-proprjetà lokali tad-dwana tas-CSS --bs-navbar-heightjew stili tad-dwana. F'viewports akbar meta n-navbar tiġi estiża, il-kontenut jidher kif jidher f'navbar default.

Jekk jogħġbok innota li din l-imġieba tiġi ma 'żvantaġġ potenzjali ta' overflow—meta l-issettjar overflow-y: auto(meħtieġ biex tiskrollja l-kontenut hawn), overflow-xhija l-ekwivalenti ta ' auto, li se taqsam xi kontenut orizzontali.

Hawn eżempju ta 'navbar li juża .navbar-nav-scrollma' style="--bs-scroll-height: 100px;", b'xi utilitajiet ta 'marġni żejda għall-ispazjar ottimali.

html 
<nav class="navbar navbar-expand-lg bg-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Navbar scroll</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarScroll" aria-controls="navbarScroll" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarScroll">
      <ul class="navbar-nav me-auto my-2 my-lg-0 navbar-nav-scroll" style="--bs-scroll-height: 100px;">
        <li class="nav-item">
          <a class="nav-link active" aria-current="page" href="#">Home</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item dropdown">
          <a class="nav-link dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown" aria-expanded="false">
            Link
          </a>
          <ul class="dropdown-menu">
            <li><a class="dropdown-item" href="#">Action</a></li>
            <li><a class="dropdown-item" href="#">Another action</a></li>
            <li><hr class="dropdown-divider"></li>
            <li><a class="dropdown-item" href="#">Something else here</a></li>
          </ul>
        </li>
        <li class="nav-item">
          <a class="nav-link disabled">Link</a>
        </li>
      </ul>
      <form class="d-flex" role="search">
        <input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
        <button class="btn btn-outline-success" type="submit">Search</button>
      </form>
    </div>
  </div>
</nav>

Imgieba reattivi

In-Navbars jistgħu jużaw .navbar-toggler, .navbar-collapse, u .navbar-expand{-sm|-md|-lg|-xl|-xxl}klassijiet biex jiddeterminaw meta l-kontenut tagħhom jiġġarraf wara buttuna. Flimkien ma 'utilitajiet oħra, tista' faċilment tagħżel meta turi jew taħbi elementi partikolari.

Għal navbars li qatt ma jikkollassaw, żid il- .navbar-expandklassi fuq in-navbar. Għal navbars li dejjem jikkrollaw, iżżid l-ebda .navbar-expandklassi.

Toggler

It-togglers tan-Navbar huma allinjati max-xellug b'mod awtomatiku, iżda jekk isegwu element aħwa bħal .navbar-brand, huma awtomatikament jiġu allinjati mal-lemin estrem. It-treġġigħ lura tal-markup tiegħek ser ireġġa' lura t-tqegħid tal-toggler. Hawn taħt hemm eżempji ta 'stili ta' toggle differenti.

Bla ebda .navbar-brandmuri fl-iżgħar punt ta' waqfien:

html 
<nav class="navbar navbar-expand-lg bg-light">
  <div class="container-fluid">
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarTogglerDemo01" aria-controls="navbarTogglerDemo01" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarTogglerDemo01">
      <a class="navbar-brand" href="#">Hidden brand</a>
      <ul class="navbar-nav me-auto mb-2 mb-lg-0">
        <li class="nav-item">
          <a class="nav-link active" aria-current="page" href="#">Home</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link disabled">Disabled</a>
        </li>
      </ul>
      <form class="d-flex" role="search">
        <input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
        <button class="btn btn-outline-success" type="submit">Search</button>
      </form>
    </div>
  </div>
</nav>

B'isem tad-ditta muri fuq ix-xellug u toggler fuq il-lemin:

html 
<nav class="navbar navbar-expand-lg bg-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Navbar</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarTogglerDemo02" aria-controls="navbarTogglerDemo02" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarTogglerDemo02">
      <ul class="navbar-nav me-auto mb-2 mb-lg-0">
        <li class="nav-item">
          <a class="nav-link active" aria-current="page" href="#">Home</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link disabled">Disabled</a>
        </li>
      </ul>
      <form class="d-flex" role="search">
        <input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
        <button class="btn btn-outline-success" type="submit">Search</button>
      </form>
    </div>
  </div>
</nav>

Bi toggler fuq ix-xellug u isem tad-ditta fuq il-lemin:

html 
<nav class="navbar navbar-expand-lg bg-light">
  <div class="container-fluid">
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarTogglerDemo03" aria-controls="navbarTogglerDemo03" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <a class="navbar-brand" href="#">Navbar</a>
    <div class="collapse navbar-collapse" id="navbarTogglerDemo03">
      <ul class="navbar-nav me-auto mb-2 mb-lg-0">
        <li class="nav-item">
          <a class="nav-link active" aria-current="page" href="#">Home</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link disabled">Disabled</a>
        </li>
      </ul>
      <form class="d-flex" role="search">
        <input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
        <button class="btn btn-outline-success" type="submit">Search</button>
      </form>
    </div>
  </div>
</nav>

Kontenut estern

Xi drabi trid tuża l-plugin tal-kollass biex tiskatta element tal-kontenitur għall-kontenut li strutturalment joqgħod barra mill- .navbar. Minħabba li l-plugin tagħna jaħdem fuq idu t- data-bs-targettqabbil, dan isir faċilment!

html 
<div class="collapse" id="navbarToggleExternalContent">
  <div class="bg-dark p-4">
    <h5 class="text-white h4">Collapsed content</h5>
    <span class="text-muted">Toggleable via the navbar brand.</span>
  </div>
</div>
<nav class="navbar navbar-dark bg-dark">
  <div class="container-fluid">
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarToggleExternalContent" aria-controls="navbarToggleExternalContent" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
  </div>
</nav>

Meta tagħmel dan, nirrakkomandaw li tinkludi JavaScript addizzjonali biex tmexxi l-fokus b'mod programmatiku lejn il-kontenitur meta jinfetaħ. Inkella, l-utenti tat-tastiera u l-utenti ta' teknoloġiji ta' assistenza x'aktarx ikollhom diffiċli biex isibu l-kontenut li għadu kif ġie żvelat - partikolarment jekk il-kontenitur li nfetaħ jiġi qabel it-toggler fl-istruttura tad-dokument. Nirrakkomandaw ukoll li niżguraw li t-toggler għandu l- aria-controlsattribut, li jindika l- idtal-kontenitur tal-kontenut. Fit-teorija, dan jippermetti lill-utenti tat-teknoloġija assistiva li jaqbżu direttament mill-toggler għall-kontenitur li jikkontrolla – iżda l-appoġġ għal dan bħalissa huwa pjuttost irregolari.

Offcanvas

Ittrasforma n-navbar tiegħek li qed tespandi u li qed tiġġarraf f'kexxun offcanvas bil- komponent offcanvas . Aħna jestendu kemm l-istili default offcanvas u nużaw il- .navbar-expand-*klassijiet tagħna biex noħolqu sidebar tan-navigazzjoni dinamika u flessibbli.

Fl-eżempju hawn taħt, biex tinħoloq navbar offcanvas li hija dejjem ikkollassata fil-punti ta' waqfien kollha, ħalli barra l- .navbar-expand-*klassi għal kollox.

html 
<nav class="navbar bg-light fixed-top">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Offcanvas navbar</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasNavbar" aria-controls="offcanvasNavbar">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="offcanvas offcanvas-end" tabindex="-1" id="offcanvasNavbar" aria-labelledby="offcanvasNavbarLabel">
      <div class="offcanvas-header">
        <h5 class="offcanvas-title" id="offcanvasNavbarLabel">Offcanvas</h5>
        <button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
      </div>
      <div class="offcanvas-body">
        <ul class="navbar-nav justify-content-end flex-grow-1 pe-3">
          <li class="nav-item">
            <a class="nav-link active" aria-current="page" href="#">Home</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Link</a>
          </li>
          <li class="nav-item dropdown">
            <a class="nav-link dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown" aria-expanded="false">
              Dropdown
            </a>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li>
                <hr class="dropdown-divider">
              </li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
            </ul>
          </li>
        </ul>
        <form class="d-flex" role="search">
          <input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
          <button class="btn btn-outline-success" type="submit">Search</button>
        </form>
      </div>
    </div>
  </div>
</nav>

Biex toħloq navbar offcanvas li tespandi f'navbar normali f'punt ta' waqfien speċifiku bħal lg, uża .navbar-expand-lg.

<nav class="navbar navbar-expand-lg bg-light fixed-top">
  <a class="navbar-brand" href="#">Offcanvas navbar</a>
  <button class="navbar-toggler" type="button" data-bs-toggle="offcanvas" data-bs-target="#navbarOffcanvasLg" aria-controls="navbarOffcanvasLg">
    <span class="navbar-toggler-icon"></span>
  </button>
  <div class="offcanvas offcanvas-end" tabindex="-1" id="navbarOffcanvasLg" aria-labelledby="navbarOffcanvasLgLabel">
    ...
  </div>
</nav>

Meta tuża offcanvas f'navbar skur, kun konxju li jista' jkollok bżonn li jkollok sfond skur fuq il-kontenut offcanvas biex tevita li t-test isir illeġibbli. Fl-eżempju hawn taħt, inżidu .navbar-darku .bg-darkmal- .navbar, .text-bg-darkmal- .offcanvas, .dropdown-menu-darkmal- .dropdown-menu, u .btn-close-whitegħall .btn-close-grafika xierqa b'kanvas skur.

html 
<nav class="navbar navbar-dark bg-dark fixed-top">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Offcanvas dark navbar</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasDarkNavbar" aria-controls="offcanvasDarkNavbar">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="offcanvas offcanvas-end text-bg-dark" tabindex="-1" id="offcanvasDarkNavbar" aria-labelledby="offcanvasDarkNavbarLabel">
      <div class="offcanvas-header">
        <h5 class="offcanvas-title" id="offcanvasDarkNavbarLabel">Dark offcanvas</h5>
        <button type="button" class="btn-close btn-close-white" data-bs-dismiss="offcanvas" aria-label="Close"></button>
      </div>
      <div class="offcanvas-body">
        <ul class="navbar-nav justify-content-end flex-grow-1 pe-3">
          <li class="nav-item">
            <a class="nav-link active" aria-current="page" href="#">Home</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Link</a>
          </li>
          <li class="nav-item dropdown">
            <a class="nav-link dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown" aria-expanded="false">
              Dropdown
            </a>
            <ul class="dropdown-menu dropdown-menu-dark">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li>
                <hr class="dropdown-divider">
              </li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
            </ul>
          </li>
        </ul>
        <form class="d-flex" role="search">
          <input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
          <button class="btn btn-success" type="submit">Search</button>
        </form>
      </div>
    </div>
  </div>
</nav>

CSS

Varjabbli

Miżjud fi v5.2.0

Bħala parti mill-approċċ tal-varjabbli tas-CSS li qed jevolvu ta' Bootstrap, in-navbars issa jużaw varjabbli tas-CSS lokali .navbargħall-adattament imtejjeb f'ħin reali. Il-valuri għall-varjabbli CSS huma stabbiliti permezz ta 'Sass, għalhekk il-personalizzazzjoni ta' Sass għadha appoġġjata wkoll.

  --#{$prefix}navbar-padding-x: #{if($navbar-padding-x == null, 0, $navbar-padding-x)};
  --#{$prefix}navbar-padding-y: #{$navbar-padding-y};
  --#{$prefix}navbar-color: #{$navbar-light-color};
  --#{$prefix}navbar-hover-color: #{$navbar-light-hover-color};
  --#{$prefix}navbar-disabled-color: #{$navbar-light-disabled-color};
  --#{$prefix}navbar-active-color: #{$navbar-light-active-color};
  --#{$prefix}navbar-brand-padding-y: #{$navbar-brand-padding-y};
  --#{$prefix}navbar-brand-margin-end: #{$navbar-brand-margin-end};
  --#{$prefix}navbar-brand-font-size: #{$navbar-brand-font-size};
  --#{$prefix}navbar-brand-color: #{$navbar-light-brand-color};
  --#{$prefix}navbar-brand-hover-color: #{$navbar-light-brand-hover-color};
  --#{$prefix}navbar-nav-link-padding-x: #{$navbar-nav-link-padding-x};
  --#{$prefix}navbar-toggler-padding-y: #{$navbar-toggler-padding-y};
  --#{$prefix}navbar-toggler-padding-x: #{$navbar-toggler-padding-x};
  --#{$prefix}navbar-toggler-font-size: #{$navbar-toggler-font-size};
  --#{$prefix}navbar-toggler-icon-bg: #{escape-svg($navbar-light-toggler-icon-bg)};
  --#{$prefix}navbar-toggler-border-color: #{$navbar-light-toggler-border-color};
  --#{$prefix}navbar-toggler-border-radius: #{$navbar-toggler-border-radius};
  --#{$prefix}navbar-toggler-focus-width: #{$navbar-toggler-focus-width};
  --#{$prefix}navbar-toggler-transition: #{$navbar-toggler-transition};

Xi varjabbli CSS addizzjonali huma preżenti wkoll fuq .navbar-nav:

  --#{$prefix}nav-link-padding-x: 0;
  --#{$prefix}nav-link-padding-y: #{$nav-link-padding-y};
  @include rfs($nav-link-font-size, --#{$prefix}nav-link-font-size);
  --#{$prefix}nav-link-font-weight: #{$nav-link-font-weight};
  --#{$prefix}nav-link-color: var(--#{$prefix}navbar-color);
  --#{$prefix}nav-link-hover-color: var(--#{$prefix}navbar-hover-color);
  --#{$prefix}nav-link-disabled-color: var(--#{$prefix}navbar-disabled-color);

L-adattament permezz ta' varjabbli CSS jista' jidher fuq il- .navbar-darkklassi fejn nissuperaw valuri speċifiċi mingħajr ma nżidu seletturi CSS duplikati.

  --#{$prefix}navbar-color: #{$navbar-dark-color};
  --#{$prefix}navbar-hover-color: #{$navbar-dark-hover-color};
  --#{$prefix}navbar-disabled-color: #{$navbar-dark-disabled-color};
  --#{$prefix}navbar-active-color: #{$navbar-dark-active-color};
  --#{$prefix}navbar-brand-color: #{$navbar-dark-brand-color};
  --#{$prefix}navbar-brand-hover-color: #{$navbar-dark-brand-hover-color};
  --#{$prefix}navbar-toggler-border-color: #{$navbar-dark-toggler-border-color};
  --#{$prefix}navbar-toggler-icon-bg: #{escape-svg($navbar-dark-toggler-icon-bg)};

Sass varjabbli

Varjabbli għall-navbars kollha:

$navbar-padding-y:                  $spacer * .5;
$navbar-padding-x:                  null;

$navbar-nav-link-padding-x:         .5rem;

$navbar-brand-font-size:            $font-size-lg;
// Compute the navbar-brand padding-y so the navbar-brand will have the same height as navbar-text and nav-link
$nav-link-height:                   $font-size-base * $line-height-base + $nav-link-padding-y * 2;
$navbar-brand-height:               $navbar-brand-font-size * $line-height-base;
$navbar-brand-padding-y:            ($nav-link-height - $navbar-brand-height) * .5;
$navbar-brand-margin-end:           1rem;

$navbar-toggler-padding-y:          .25rem;
$navbar-toggler-padding-x:          .75rem;
$navbar-toggler-font-size:          $font-size-lg;
$navbar-toggler-border-radius:      $btn-border-radius;
$navbar-toggler-focus-width:        $btn-focus-width;
$navbar-toggler-transition:         box-shadow .15s ease-in-out;

$navbar-light-color:                rgba($black, .55);
$navbar-light-hover-color:          rgba($black, .7);
$navbar-light-active-color:         rgba($black, .9);
$navbar-light-disabled-color:       rgba($black, .3);
$navbar-light-toggler-icon-bg:      url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'><path stroke='#{$navbar-light-color}' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/></svg>");
$navbar-light-toggler-border-color: rgba($black, .1);
$navbar-light-brand-color:          $navbar-light-active-color;
$navbar-light-brand-hover-color:    $navbar-light-active-color;

Varjabbli għan- navbar skur :

$navbar-dark-color:                 rgba($white, .55);
$navbar-dark-hover-color:           rgba($white, .75);
$navbar-dark-active-color:          $white;
$navbar-dark-disabled-color:        rgba($white, .25);
$navbar-dark-toggler-icon-bg:       url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'><path stroke='#{$navbar-dark-color}' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/></svg>");
$navbar-dark-toggler-border-color:  rgba($white, .1);
$navbar-dark-brand-color:           $navbar-dark-active-color;
$navbar-dark-brand-hover-color:     $navbar-dark-active-color;

Sass loop

Il-klassijiet ta' navbar li jirrispondu jespandu/kollass (eż., .navbar-expand-lg) huma kkombinati mal- $breakpointsmappa u ġġenerati permezz ta' loop f' scss/_navbar.scss.

// Generate series of `.navbar-expand-*` responsive classes for configuring
// where your navbar collapses.
.navbar-expand {
  @each $breakpoint in map-keys($grid-breakpoints) {
    $next: breakpoint-next($breakpoint, $grid-breakpoints);
    $infix: breakpoint-infix($next, $grid-breakpoints);

    // stylelint-disable-next-line scss/selector-no-union-class-name
    &#{$infix} {
      @include media-breakpoint-up($next) {
        flex-wrap: nowrap;
        justify-content: flex-start;

        .navbar-nav {
          flex-direction: row;

          .dropdown-menu {
            position: absolute;
          }

          .nav-link {
            padding-right: var(--#{$prefix}navbar-nav-link-padding-x);
            padding-left: var(--#{$prefix}navbar-nav-link-padding-x);
          }
        }

        .navbar-nav-scroll {
          overflow: visible;
        }

        .navbar-collapse {
          display: flex !important; // stylelint-disable-line declaration-no-important
          flex-basis: auto;
        }

        .navbar-toggler {
          display: none;
        }

        .offcanvas {
          // stylelint-disable declaration-no-important
          position: static;
          z-index: auto;
          flex-grow: 1;
          width: auto !important;
          height: auto !important;
          visibility: visible !important;
          background-color: transparent !important;
          border: 0 !important;
          transform: none !important;
          @include box-shadow(none);
          @include transition(none);
          // stylelint-enable declaration-no-important

          .offcanvas-header {
            display: none;
          }

          .offcanvas-body {
            display: flex;
            flex-grow: 0;
            padding: 0;
            overflow-y: visible;
          }
        }
      }
    }
  }
}