Source

Scrollspy

Bootstrap navigatsiyasini avtomatik ravishda yangilang yoki ko'rish oynasida qaysi havola faol ekanligini ko'rsatish uchun aylantirish holatiga qarab guruh komponentlarini ro'yxatlang.

U qanday ishlaydi

Scrollspy to'g'ri ishlashi uchun bir nechta talablarga ega:

Agar siz bizning JavaScript-ni manbadan yaratayotgan bo'lsangiz, u talab qiladiutil.js .
U Bootstrap nav komponentida yoki ro'yxat guruhida ishlatilishi kerak .
Scrollspy position: relative;siz josuslik qilayotgan elementni talab qiladi, odatda <body>.
dan boshqa elementlarga josuslik qilayotganda , to'plam va qo'llanilishini <body>unutmang .heightoverflow-y: scroll;
Ankrajlar ( <a>) talab qilinadi va u bilan elementga ishora qilishi kerak id.

Muvaffaqiyatli amalga oshirilgandan so'ng, navbat yoki ro'yxat guruhingiz mos ravishda yangilanadi .activeva ular bilan bog'liq maqsadlar asosida sinfni bir elementdan ikkinchisiga o'tkazadi.

Navbar ostidagi maydonni aylantiring va faol sinf o'zgarishini kuzating. Ochiladigan elementlar ham ta'kidlanadi.

@yog'

Reklama leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi ular qui sotilgan oldin. Tumblr fermadan stolga velosiped huquqlari. Anim keffiyeh carles kardigan. Velit seitan mcsweeney ning fotostendi 3 bo'ri oy irure. Cosby sviter lomo jinsi shortilar, Uilyamsburg hoodie minim qui siz ular haqida eshitmagan bo'lsangiz kerak va kardigan ishonch fondi culpa biodiesel Wes Anderson estetik. 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 whatever delectus food truck. Sintetik identifikatorni aniqlang. Locavore sed helvetica cliche irony, momaqaldiroqlar, ehtimol siz ular haqida eshitmagan bo'lsangiz ham, hoodie glyutensiz lo-fi fap aliquip. Ular sotilishidan oldin mehnatkashlar, Terri Richardson, hunarmandning kosbi kozoklarini yaxshi ko'rardi. Cardigan craft pivo seitan tayyor velit. VHS chambray laboris tempor veniam. Anim mollit minimal 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>

Ichki nav bilan misol

Scrollspy shuningdek, ichki o'rnatilgan .navs bilan ishlaydi. Agar uyali .navbo'lsa .active, uning ota-onasi ham bo'ladi .active. Navbar yonidagi maydonni aylantiring va faol sinf o'zgarishini kuzating.

1-modda

Ex consequat commodo adipisicing exercitation aute excepteur occaecat ullamco duis aliqua id magna ullamco eu. Aute ipsum ipsum ullamco cillum consectetur ut va aute consectetur worke qiling. Fugiat laborum incididunt tempor eu consequat enim doore proident. Bu yerda hech qanday istisno bo'lishi mumkin emas. Aliquip nulla enim veniam non fugiat id cupidatat nulla elit cupidatat commodo velit ut eiusmod cupidatat elit dolore.

1-1-band

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 consequat id quis ea. Sit 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 minimal exercitation minimal minimal commodo adipisicing mashqlar officia nisi adipisicing. Anim id duis qui consequat labore adipisicing sint dolor elit cillum anim et fugiat.

2-2-band

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 minimal mollit nostrud aute reprehenderit do. Mollit excepteur eu Lorem ipsum anim commodo sint labore Lorem in exercitation velit incididunt. Occaecat consectetur nisi in okcaecat proident minimal enim sunt reprehenderit exercitation cupidatat and do officia. Aliquip consequat ad labore labore mollit ut amet. 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>

Ro'yxat-guruh bilan misol

Scrollspy .list-groups bilan ham ishlaydi. Roʻyxat guruhi yonidagi maydonni aylantiring va faol sinf oʻzgarishini kuzating.

1-modda 2-modda 3-modda 4-modda

1-modda

2-modda

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 in duis workis 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.

3-modda

Quis anim sit do amet fugiat dolor velit sit ea do reprehenderit culpa duis. Nostrud aliqua ipsum fugiat minimal 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.

4-modda

<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>

Foydalanish

Ma'lumotlar atributlari orqali

Yuqori paneldagi navigatsiyaga osongina scrollspy harakatini qo'shish data-spy="scroll"uchun josuslik qilmoqchi bo'lgan elementga qo'shing (ko'pincha bu <body>). Keyin har qanday Bootstrap komponentining data-targetasosiy elementining identifikatori yoki sinfi bilan atributni qo'shing..nav

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>

JavaScript orqali

CSS-ni qo'shgandan so'ng position: relative;, JavaScript orqali scrollspy-ga qo'ng'iroq qiling:

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

Yechish mumkin bo'lgan ID maqsadlari talab qilinadi

Navbar havolalarida hal qilinadigan id maqsadlari boʻlishi kerak. Masalan, <a href="#home">home</a>DOMdagi biror narsaga mos kelishi kerak <div id="home"></div>.

Maqsadli bo'lmagan `:visible`elementlar e'tiborga olinmadi

:visibleJQuery'ga mos kelmaydigan maqsadli elementlar e'tiborga olinmaydi va ularning mos navbatlari hech qachon ta'kidlanmaydi.

Usullari

`.scrollspy('refresh')`

Scrollspy-dan DOM-ga elementlarni qo'shish yoki olib tashlash bilan birgalikda foydalanilganda, siz yangilash usulini shunday chaqirishingiz kerak bo'ladi:

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

`.scrollspy('dispose')`

Elementning scrollspy-ni yo'q qiladi.

Variantlar

Variantlar ma'lumotlar atributlari yoki JavaScript orqali uzatilishi mumkin. Maʼlumotlar atributlari uchun opsiya nomini quyidagi data-kabi qoʻshing data-offset="".

Ism	Turi	Standart	Tavsif
ofset	raqam	10	O'tkazish joyini hisoblashda yuqoridan siljish uchun piksellar.

Voqealar

Tadbir turi	Tavsif
activate.bs.scrollspy	Scrollspy tomonidan yangi element faollashtirilganda, bu hodisa aylantirish elementida yonadi.

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

Scrollspy

U qanday ishlaydi

Navbardagi misol

@yog'

@mdo

one

two

three

Ichki nav bilan misol

1-modda

1-1-band

2-2-band

Item 2

Item 3

Item 3-1

Item 3-2

Ro'yxat-guruh bilan misol

1-modda

2-modda

3-modda

4-modda

Foydalanish

Ma'lumotlar atributlari orqali

JavaScript orqali

Yechish mumkin bo'lgan ID maqsadlari talab qilinadi

Maqsadli bo'lmagan :visibleelementlar e'tiborga olinmadi

Usullari

.scrollspy('refresh')

.scrollspy('dispose')

Variantlar

Voqealar

Maqsadli bo'lmagan `:visible`elementlar e'tiborga olinmadi

`.scrollspy('refresh')`

`.scrollspy('dispose')`