Floating labels
Tsim cov ntawv sau yooj yooj yim zoo nkauj uas ntab hla koj qhov chaw nkag.
Piv txwv
Qhwv ib khub ntawm <input class="form-control">thiab <label>cov ntsiab lus .form-floatinglos ua kom cov ntawv ntab ntab nrog Bootstrap cov ntawv sau ua teb. Ib qho placeholderyuav tsum tau ua ntawm txhua tus <input>raws li peb txoj kev ntawm CSS-tsuas yog cov ntawv ntab ntab siv cov :placeholder-shownpseudo-element. Tsis tas li ntawd nco ntsoov tias qhov <input>yuav tsum tau ua ntej yog li peb tuaj yeem siv tus kwv tij xaiv xaiv (xws li, ~).
<div class="form-floating mb-3">
<input type="email" class="form-control" id="floatingInput" placeholder="[email protected]">
<label for="floatingInput">Email address</label>
</div>
<div class="form-floating">
<input type="password" class="form-control" id="floatingPassword" placeholder="Password">
<label for="floatingPassword">Password</label>
</div>Thaum muaj qhov valuetwb tau hais tseg lawm, <label>s yuav hloov kho rau lawv txoj haujlwm ntab.
<form class="form-floating">
<input type="email" class="form-control" id="floatingInputValue" placeholder="[email protected]" value="[email protected]">
<label for="floatingInputValue">Input with value</label>
</form>Daim ntawv validation style kuj ua haujlwm raws li qhov xav tau.
<form class="form-floating">
<input type="email" class="form-control is-invalid" id="floatingInputInvalid" placeholder="[email protected]" value="[email protected]">
<label for="floatingInputInvalid">Invalid input</label>
</form>Textareas
Los ntawm lub neej ntawd, <textarea>s nrog .form-controlyuav yog qhov siab tib yam li <input>s.
<div class="form-floating">
<textarea class="form-control" placeholder="Leave a comment here" id="floatingTextarea"></textarea>
<label for="floatingTextarea">Comments</label>
</div>Txhawm rau teeb tsa qhov siab ntawm koj tus kheej <textarea>, tsis txhob siv tus rowscwj pwm. Hloov chaw, teeb tsa qhov tseeb height(xws li hauv kab lossis ntawm kev cai CSS).
<div class="form-floating">
<textarea class="form-control" placeholder="Leave a comment here" id="floatingTextarea2" style="height: 100px"></textarea>
<label for="floatingTextarea2">Comments</label>
</div>Xaiv
Tsis tas li .form-controlntawd, cov ntawv ntab ntab tsuas muaj nyob rau ntawm .form-selects. Lawv ua hauj lwm tib yam, tab sis tsis zoo li <input>s, lawv yuav ib txwm qhia qhov <label>nyob rau hauv nws floated xeev. Xaiv nrog sizethiab multipletsis txaus siab.
<div class="form-floating">
<select class="form-select" id="floatingSelect" aria-label="Floating label select example">
<option selected>Open this select menu</option>
<option value="1">One</option>
<option value="2">Two</option>
<option value="3">Three</option>
</select>
<label for="floatingSelect">Works with selects</label>
</div>Layout
Thaum ua haujlwm nrog Bootstrap grid system, nco ntsoov muab cov ntawv tso rau hauv cov chav kawm.
<div class="row g-2">
<div class="col-md">
<div class="form-floating">
<input type="email" class="form-control" id="floatingInputGrid" placeholder="[email protected]" value="[email protected]">
<label for="floatingInputGrid">Email address</label>
</div>
</div>
<div class="col-md">
<div class="form-floating">
<select class="form-select" id="floatingSelectGrid" aria-label="Floating label select example">
<option selected>Open this select menu</option>
<option value="1">One</option>
<option value="2">Two</option>
<option value="3">Three</option>
</select>
<label for="floatingSelectGrid">Works with selects</label>
</div>
</div>
</div>Sass
Hloov pauv
$form-floating-height: add(3.5rem, $input-height-border);
$form-floating-line-height: 1.25;
$form-floating-padding-x: $input-padding-x;
$form-floating-padding-y: 1rem;
$form-floating-input-padding-t: 1.625rem;
$form-floating-input-padding-b: .625rem;
$form-floating-label-opacity: .65;
$form-floating-label-transform: scale(.85) translateY(-.5rem) translateX(.15rem);
$form-floating-transition: opacity .1s ease-in-out, transform .1s ease-in-out;