Kinnitamine
Andke oma kasutajatele väärtuslikku ja praktilist tagasisidet HTML5 vormi valideerimisega brauseri vaikekäitumise või kohandatud stiilide ja JavaScripti kaudu.
Kuidas see töötab
Vormi valideerimine Bootstrapiga toimib järgmiselt.
- HTML-vormingu valideerimist rakendatakse CSS-i kahe pseudoklassi
:invalid
ja:valid
. See kehtib<input>
,<select>
, ja<textarea>
elementide kohta. - Bootstrap ulatub
:invalid
ja:valid
stiilid.was-validated
ülemklassile, mida tavaliselt rakendatakse<form>
. Vastasel juhul kuvatakse kõik ilma väärtuseta kohustuslikud väljad lehe laadimisel kehtetutena. Nii saate valida, millal need aktiveerida (tavaliselt pärast vormi esitamise katset). - Vormi välimuse lähtestamiseks (näiteks dünaamiliste vormide esitamise korral AJAX-i abil) eemaldage
.was-validated
klass<form>
pärast esitamist uuesti. - Tagavarana võib serveripoolseks valideerimiseks
.is-invalid
pseudoklasside asemel.is-valid
kasutada klasse . Nad ei nõua vanemate klassi..was-validated
- CSS-i toimimise piirangute tõttu ei saa me (praegu)
<label>
ilma kohandatud JavaScripti abita rakendada stiile DOM-is enne vormijuhtelementi. - Kõik kaasaegsed brauserid toetavad piirangute valideerimise API -d , mis on JavaScripti meetodite seeria vormi juhtelementide kinnitamiseks.
- Tagasisidesõnumid võivad kasutada brauseri vaikeseadeid (iga brauseri puhul erinevad ja CSS-i kaudu stiilivabad) või meie kohandatud tagasisidestiile koos täiendava HTML-i ja CSS-iga.
- Saate esitada kohandatud kehtivussõnumeid
setCustomValidity
JavaScriptis.
Seda silmas pidades kaaluge meie kohandatud vormide valideerimisstiilide, valikuliste serveripoolsete klasside ja brauseri vaikeseadete jaoks järgmisi demosid.
Kohandatud stiilid
Kohandatud Bootstrapi vormi valideerimissõnumite jaoks peate lisama novalidate
tõeväärtuse atribuudi oma <form>
. See keelab brauseri vaiketagasiside tööriistavihjed, kuid annab siiski juurdepääsu JavaScripti vormi valideerimise API-dele. Proovige esitada allolev vorm; meie JavaScript peatab saatmisnupu ja edastab teile tagasisidet. Kui proovite esitada, näete vormi juhtelementidele rakendatud stiile :invalid
ja .:valid
Kohandatud tagasiside stiilid rakendavad tagasiside paremaks edastamiseks kohandatud värve, ääriseid, fookusstiile ja taustaikoone. Taustaikoonid <select>
s jaoks on saadaval ainult .form-select
, kuid mitte .form-control
.
<form class="row g-3 needs-validation" novalidate>
<div class="col-md-4">
<label for="validationCustom01" class="form-label">First name</label>
<input type="text" class="form-control" id="validationCustom01" value="Mark" required>
<div class="valid-feedback">
Looks good!
</div>
</div>
<div class="col-md-4">
<label for="validationCustom02" class="form-label">Last name</label>
<input type="text" class="form-control" id="validationCustom02" value="Otto" required>
<div class="valid-feedback">
Looks good!
</div>
</div>
<div class="col-md-4">
<label for="validationCustomUsername" class="form-label">Username</label>
<div class="input-group has-validation">
<span class="input-group-text" id="inputGroupPrepend">@</span>
<input type="text" class="form-control" id="validationCustomUsername" aria-describedby="inputGroupPrepend" required>
<div class="invalid-feedback">
Please choose a username.
</div>
</div>
</div>
<div class="col-md-6">
<label for="validationCustom03" class="form-label">City</label>
<input type="text" class="form-control" id="validationCustom03" required>
<div class="invalid-feedback">
Please provide a valid city.
</div>
</div>
<div class="col-md-3">
<label for="validationCustom04" class="form-label">State</label>
<select class="form-select" id="validationCustom04" required>
<option selected disabled value="">Choose...</option>
<option>...</option>
</select>
<div class="invalid-feedback">
Please select a valid state.
</div>
</div>
<div class="col-md-3">
<label for="validationCustom05" class="form-label">Zip</label>
<input type="text" class="form-control" id="validationCustom05" required>
<div class="invalid-feedback">
Please provide a valid zip.
</div>
</div>
<div class="col-12">
<div class="form-check">
<input class="form-check-input" type="checkbox" value="" id="invalidCheck" required>
<label class="form-check-label" for="invalidCheck">
Agree to terms and conditions
</label>
<div class="invalid-feedback">
You must agree before submitting.
</div>
</div>
</div>
<div class="col-12">
<button class="btn btn-primary" type="submit">Submit form</button>
</div>
</form>
// Example starter JavaScript for disabling form submissions if there are invalid fields
(function () {
'use strict'
// Fetch all the forms we want to apply custom Bootstrap validation styles to
var forms = document.querySelectorAll('.needs-validation')
// Loop over them and prevent submission
Array.prototype.slice.call(forms)
.forEach(function (form) {
form.addEventListener('submit', function (event) {
if (!form.checkValidity()) {
event.preventDefault()
event.stopPropagation()
}
form.classList.add('was-validated')
}, false)
})
})()
Brauseri vaikeseaded
Kas te pole huvitatud kohandatud valideerimise tagasiside sõnumitest või JavaScripti kirjutamisest, et muuta vormi käitumist? Kõik hea, saate kasutada brauseri vaikeseadeid. Proovige esitada allolev vorm. Sõltuvalt teie brauserist ja OS-ist näete veidi erinevat tagasisidestiili.
Kuigi neid tagasiside stiile ei saa CSS-iga kujundada, saate siiski JavaScripti kaudu tagasiside teksti kohandada.
<form class="row g-3">
<div class="col-md-4">
<label for="validationDefault01" class="form-label">First name</label>
<input type="text" class="form-control" id="validationDefault01" value="Mark" required>
</div>
<div class="col-md-4">
<label for="validationDefault02" class="form-label">Last name</label>
<input type="text" class="form-control" id="validationDefault02" value="Otto" required>
</div>
<div class="col-md-4">
<label for="validationDefaultUsername" class="form-label">Username</label>
<div class="input-group">
<span class="input-group-text" id="inputGroupPrepend2">@</span>
<input type="text" class="form-control" id="validationDefaultUsername" aria-describedby="inputGroupPrepend2" required>
</div>
</div>
<div class="col-md-6">
<label for="validationDefault03" class="form-label">City</label>
<input type="text" class="form-control" id="validationDefault03" required>
</div>
<div class="col-md-3">
<label for="validationDefault04" class="form-label">State</label>
<select class="form-select" id="validationDefault04" required>
<option selected disabled value="">Choose...</option>
<option>...</option>
</select>
</div>
<div class="col-md-3">
<label for="validationDefault05" class="form-label">Zip</label>
<input type="text" class="form-control" id="validationDefault05" required>
</div>
<div class="col-12">
<div class="form-check">
<input class="form-check-input" type="checkbox" value="" id="invalidCheck2" required>
<label class="form-check-label" for="invalidCheck2">
Agree to terms and conditions
</label>
</div>
</div>
<div class="col-12">
<button class="btn btn-primary" type="submit">Submit form</button>
</div>
</form>
Serveri pool
Soovitame kasutada kliendipoolset valideerimist, kuid kui vajate serveripoolset valideerimist, saate kehtetud ja kehtivatele vormiväljadele märkida .is-invalid
ja .is-valid
. Pange tähele, et .invalid-feedback
seda toetatakse ka nende klassidega.
Kehtetute väljade puhul veenduge, et kehtetu tagasiside/veateade oleks seotud vastava vormiväljaga, kasutades aria-describedby
(pange tähele, et see atribuut võimaldab id
viidata rohkem kui ühele, juhul kui väli osutab juba täiendavale vormi tekstile).
Ääriste raadiustega seotud probleemide lahendamiseks vajavad sisendrühmad täiendavat .has-validation
klassi.
<form class="row g-3">
<div class="col-md-4">
<label for="validationServer01" class="form-label">First name</label>
<input type="text" class="form-control is-valid" id="validationServer01" value="Mark" required>
<div class="valid-feedback">
Looks good!
</div>
</div>
<div class="col-md-4">
<label for="validationServer02" class="form-label">Last name</label>
<input type="text" class="form-control is-valid" id="validationServer02" value="Otto" required>
<div class="valid-feedback">
Looks good!
</div>
</div>
<div class="col-md-4">
<label for="validationServerUsername" class="form-label">Username</label>
<div class="input-group has-validation">
<span class="input-group-text" id="inputGroupPrepend3">@</span>
<input type="text" class="form-control is-invalid" id="validationServerUsername" aria-describedby="inputGroupPrepend3 validationServerUsernameFeedback" required>
<div id="validationServerUsernameFeedback" class="invalid-feedback">
Please choose a username.
</div>
</div>
</div>
<div class="col-md-6">
<label for="validationServer03" class="form-label">City</label>
<input type="text" class="form-control is-invalid" id="validationServer03" aria-describedby="validationServer03Feedback" required>
<div id="validationServer03Feedback" class="invalid-feedback">
Please provide a valid city.
</div>
</div>
<div class="col-md-3">
<label for="validationServer04" class="form-label">State</label>
<select class="form-select is-invalid" id="validationServer04" aria-describedby="validationServer04Feedback" required>
<option selected disabled value="">Choose...</option>
<option>...</option>
</select>
<div id="validationServer04Feedback" class="invalid-feedback">
Please select a valid state.
</div>
</div>
<div class="col-md-3">
<label for="validationServer05" class="form-label">Zip</label>
<input type="text" class="form-control is-invalid" id="validationServer05" aria-describedby="validationServer05Feedback" required>
<div id="validationServer05Feedback" class="invalid-feedback">
Please provide a valid zip.
</div>
</div>
<div class="col-12">
<div class="form-check">
<input class="form-check-input is-invalid" type="checkbox" value="" id="invalidCheck3" aria-describedby="invalidCheck3Feedback" required>
<label class="form-check-label" for="invalidCheck3">
Agree to terms and conditions
</label>
<div id="invalidCheck3Feedback" class="invalid-feedback">
You must agree before submitting.
</div>
</div>
</div>
<div class="col-12">
<button class="btn btn-primary" type="submit">Submit form</button>
</div>
</form>
Toetatud elemendid
Valideerimisstiilid on saadaval järgmiste vormi juhtelementide ja komponentide jaoks.
<input>
s ja<textarea>
s koos.form-control
(sh kuni üks.form-control
sisendrühmades)<select>
s koos.form-select
.form-check
s
<form class="was-validated">
<div class="mb-3">
<label for="validationTextarea" class="form-label">Textarea</label>
<textarea class="form-control is-invalid" id="validationTextarea" placeholder="Required example textarea" required></textarea>
<div class="invalid-feedback">
Please enter a message in the textarea.
</div>
</div>
<div class="form-check mb-3">
<input type="checkbox" class="form-check-input" id="validationFormCheck1" required>
<label class="form-check-label" for="validationFormCheck1">Check this checkbox</label>
<div class="invalid-feedback">Example invalid feedback text</div>
</div>
<div class="form-check">
<input type="radio" class="form-check-input" id="validationFormCheck2" name="radio-stacked" required>
<label class="form-check-label" for="validationFormCheck2">Toggle this radio</label>
</div>
<div class="form-check mb-3">
<input type="radio" class="form-check-input" id="validationFormCheck3" name="radio-stacked" required>
<label class="form-check-label" for="validationFormCheck3">Or toggle this other radio</label>
<div class="invalid-feedback">More example invalid feedback text</div>
</div>
<div class="mb-3">
<select class="form-select" required aria-label="select example">
<option value="">Open this select menu</option>
<option value="1">One</option>
<option value="2">Two</option>
<option value="3">Three</option>
</select>
<div class="invalid-feedback">Example invalid select feedback</div>
</div>
<div class="mb-3">
<input type="file" class="form-control" aria-label="file example" required>
<div class="invalid-feedback">Example invalid form file feedback</div>
</div>
<div class="mb-3">
<button class="btn btn-primary" type="submit" disabled>Submit form</button>
</div>
</form>
Tööriistanõuanded
Kui teie vormipaigutus seda võimaldab, saate vahetada .{valid|invalid}-feedback
klassid .{valid|invalid}-tooltip
klasside vastu, et kuvada stiilis kohtspikris valideerimise tagasisidet. position: relative
Tööriistavihje positsioneerimiseks kasutage seda kindlasti lapsevanemal . Allolevas näites on see meie veeruklassidel juba olemas, kuid teie projekt võib vajada alternatiivset seadistust.
<form class="row g-3 needs-validation" novalidate>
<div class="col-md-4 position-relative">
<label for="validationTooltip01" class="form-label">First name</label>
<input type="text" class="form-control" id="validationTooltip01" value="Mark" required>
<div class="valid-tooltip">
Looks good!
</div>
</div>
<div class="col-md-4 position-relative">
<label for="validationTooltip02" class="form-label">Last name</label>
<input type="text" class="form-control" id="validationTooltip02" value="Otto" required>
<div class="valid-tooltip">
Looks good!
</div>
</div>
<div class="col-md-4 position-relative">
<label for="validationTooltipUsername" class="form-label">Username</label>
<div class="input-group has-validation">
<span class="input-group-text" id="validationTooltipUsernamePrepend">@</span>
<input type="text" class="form-control" id="validationTooltipUsername" aria-describedby="validationTooltipUsernamePrepend" required>
<div class="invalid-tooltip">
Please choose a unique and valid username.
</div>
</div>
</div>
<div class="col-md-6 position-relative">
<label for="validationTooltip03" class="form-label">City</label>
<input type="text" class="form-control" id="validationTooltip03" required>
<div class="invalid-tooltip">
Please provide a valid city.
</div>
</div>
<div class="col-md-3 position-relative">
<label for="validationTooltip04" class="form-label">State</label>
<select class="form-select" id="validationTooltip04" required>
<option selected disabled value="">Choose...</option>
<option>...</option>
</select>
<div class="invalid-tooltip">
Please select a valid state.
</div>
</div>
<div class="col-md-3 position-relative">
<label for="validationTooltip05" class="form-label">Zip</label>
<input type="text" class="form-control" id="validationTooltip05" required>
<div class="invalid-tooltip">
Please provide a valid zip.
</div>
</div>
<div class="col-12">
<button class="btn btn-primary" type="submit">Submit form</button>
</div>
</form>
Sass
Muutujad
$form-feedback-margin-top: $form-text-margin-top;
$form-feedback-font-size: $form-text-font-size;
$form-feedback-font-style: $form-text-font-style;
$form-feedback-valid-color: $success;
$form-feedback-invalid-color: $danger;
$form-feedback-icon-valid-color: $form-feedback-valid-color;
$form-feedback-icon-valid: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'><path fill='#{$form-feedback-icon-valid-color}' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/></svg>");
$form-feedback-icon-invalid-color: $form-feedback-invalid-color;
$form-feedback-icon-invalid: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='#{$form-feedback-icon-invalid-color}'><circle cx='6' cy='6' r='4.5'/><path stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/><circle cx='6' cy='8.2' r='.6' fill='#{$form-feedback-icon-invalid-color}' stroke='none'/></svg>");
Segud
Meie tsükli kaudu kombineeritakse kaks segu , et luua meie vormi valideerimise tagasisidestiile.
@mixin form-validation-state-selector($state) {
@if ($state == "valid" or $state == "invalid") {
.was-validated #{if(&, "&", "")}:#{$state},
#{if(&, "&", "")}.is-#{$state} {
@content;
}
} @else {
#{if(&, "&", "")}.is-#{$state} {
@content;
}
}
}
@mixin form-validation-state(
$state,
$color,
$icon,
$tooltip-color: color-contrast($color),
$tooltip-bg-color: rgba($color, $form-feedback-tooltip-opacity),
$focus-box-shadow: 0 0 $input-btn-focus-blur $input-focus-width rgba($color, $input-btn-focus-color-opacity)
) {
.#{$state}-feedback {
display: none;
width: 100%;
margin-top: $form-feedback-margin-top;
@include font-size($form-feedback-font-size);
font-style: $form-feedback-font-style;
color: $color;
}
.#{$state}-tooltip {
position: absolute;
top: 100%;
z-index: 5;
display: none;
max-width: 100%; // Contain to parent when possible
padding: $form-feedback-tooltip-padding-y $form-feedback-tooltip-padding-x;
margin-top: .1rem;
@include font-size($form-feedback-tooltip-font-size);
line-height: $form-feedback-tooltip-line-height;
color: $tooltip-color;
background-color: $tooltip-bg-color;
@include border-radius($form-feedback-tooltip-border-radius);
}
@include form-validation-state-selector($state) {
~ .#{$state}-feedback,
~ .#{$state}-tooltip {
display: block;
}
}
.form-control {
@include form-validation-state-selector($state) {
border-color: $color;
@if $enable-validation-icons {
padding-right: $input-height-inner;
background-image: escape-svg($icon);
background-repeat: no-repeat;
background-position: right $input-height-inner-quarter center;
background-size: $input-height-inner-half $input-height-inner-half;
}
&:focus {
border-color: $color;
box-shadow: $focus-box-shadow;
}
}
}
// stylelint-disable-next-line selector-no-qualifying-type
textarea.form-control {
@include form-validation-state-selector($state) {
@if $enable-validation-icons {
padding-right: $input-height-inner;
background-position: top $input-height-inner-quarter right $input-height-inner-quarter;
}
}
}
.form-select {
@include form-validation-state-selector($state) {
border-color: $color;
@if $enable-validation-icons {
&:not([multiple]):not([size]),
&:not([multiple])[size="1"] {
padding-right: $form-select-feedback-icon-padding-end;
background-image: escape-svg($form-select-indicator), escape-svg($icon);
background-position: $form-select-bg-position, $form-select-feedback-icon-position;
background-size: $form-select-bg-size, $form-select-feedback-icon-size;
}
}
&:focus {
border-color: $color;
box-shadow: $focus-box-shadow;
}
}
}
.form-check-input {
@include form-validation-state-selector($state) {
border-color: $color;
&:checked {
background-color: $color;
}
&:focus {
box-shadow: $focus-box-shadow;
}
~ .form-check-label {
color: $color;
}
}
}
.form-check-inline .form-check-input {
~ .#{$state}-feedback {
margin-left: .5em;
}
}
.input-group .form-control,
.input-group .form-select {
@include form-validation-state-selector($state) {
@if $state == "valid" {
z-index: 1;
} @else if $state == "invalid" {
z-index: 2;
}
&:focus {
z-index: 3;
}
}
}
}
Kaart
See on Sassi valideerimiskaart _variables.scss
. Teiste või täiendavate olekute loomiseks tühistage või laiendage seda.
$form-validation-states: (
"valid": (
"color": $form-feedback-valid-color,
"icon": $form-feedback-icon-valid
),
"invalid": (
"color": $form-feedback-invalid-color,
"icon": $form-feedback-icon-invalid
)
);
Kaardid $form-validation-states
võivad sisaldada kolme valikulist parameetrit, et alistada kohtspikrid ja fookusstiilid.
Loop
Kasutatakse $form-validation-states
kaardi väärtuste kordamiseks, et luua meie valideerimisstiile. Kõik ülaltoodud Sassi kaardi muudatused kajastuvad selle tsükli kaudu teie koostatud CSS-is.
@each $state, $data in $form-validation-states {
@include form-validation-state($state, $data...);
}
Kohandamine
Valideerimisolekuid saab Sassi kaudu $form-validation-states
kaardiga kohandada. See meie failis asuv _variables.scss
Sassi kaart näitab, kuidas loome vaike- valid
/ invalid
valideerimisolekud. Kaasas on pesastatud kaart iga oleku värvi, ikooni, tööriistavihje värvi ja fookuse varju kohandamiseks. Kuigi brauserid ei toeta ühtegi teist olekut, saavad kohandatud stiilide kasutajad hõlpsasti lisada keerukama vormi tagasisidet.
Pange tähele, et me ei soovita $form-validation-states
väärtusi kohandada ilma form-validation-state
mixini muutmata .