Nkwado

Nye ndị ọrụ gị nzaghachi bara uru, nwere ike ịrụ ọrụ na nkwado ụdị HTML5, site na omume ndabara ihe nchọgharị ma ọ bụ ụdị omenala na Javascript.

Na ibe a

Anyị maara na ugbu a ụdị nkwado ndabere na mpaghara ndị ahịa adịghị enweta ya, ebe ọ bụ na ekpughere ha na teknụzụ enyemaka. Ka anyị na-arụ ọrụ na ngwọta, anyị ga-akwado iji nhọrọ akụkụ nkesa ma ọ bụ usoro nkwado nchọgharị ndabere.

Ka o si arụ ọrụ

Nke a bụ ka nkwado fọm si arụ ọrụ na Bootstrap:

A na-etinye nkwado ụdị HTML site na klaasị pseudo abụọ nke CSS, :invalidyana :valid. Ọ na-emetụta <input>, <select>, na <textarea>ọcha.
Bootstrap na-agbasa :invalidna :validụdị na .was-validatedklaasị nne na nna, a na-etinyekarị ya na faịlụ <form>. Ma ọ bụghị ya, ubi ọ bụla achọrọ na-enweghị uru na-egosi na ezighi ezi na ibu ibe. N'ụzọ dị otú a, ị nwere ike họrọ mgbe ịgbalite ha (na-emekarị mgbe a nwara nrubeisi ụdị).
Iji tọgharịa ọdịdị nke ụdị ahụ (dịka ọmụmaatụ, n'ihe gbasara ntinye ụdị ike na-eji AJAX), wepụ .was-validatedklas ahụ <form>ọzọ mgbe nrubeisi gasịrị.
Dị ka ndaghachi azụ, .is-invalidna .is-validklaasị nwere ike iji kama klas pseudo maka nkwado n'akụkụ nkesa . Ha achọghị .was-validatedklas nne na nna.
N'ihi mmachi dị na ka CSS si arụ ọrụ, anyị enweghị ike (ugbu a) itinye ụdị na nke <label>na-abịa n'ihu njikwa ụdị na DOM na-enweghị enyemaka nke JavaScript omenala.
Ihe nchọgharị ọgbara ọhụrụ niile na-akwado API nkwado mgbochi , usoro Javascript maka njikwa ụdị.
Ozi nzaghachi nwere ike iji ndabara ihe nchọgharị ahụ (dị iche maka ihe nchọgharị ọ bụla, yana nke na-adịghị mma site na CSS) ma ọ bụ ụdị nzaghachi omenala anyị nwere HTML na CSS agbakwunyere.
Ị nwere ike ịnye ozi nkwado ndabere na setCustomValiditympaghara Javascript.

N'iburu nke ahụ n'uche, tụlee ngosi ngosi ndị a maka ụdị nkwado ụdị omenala anyị, klaasị n'akụkụ ihe nkesa nhọrọ, yana ndabara ihe nchọgharị.

Ụdị omenala

Maka ozi nkwado ụdị Bootstrap omenala, ị ga-achọ ịgbakwunye njirimara novalidateboolean na faịlụ <form>. Nke a na-ewepụ ntụzịaka ngwaọrụ nzaghachi ndabara ihe nchọgharị, mana ọ ka na-enye ohere ịnweta API nkwado ụdị na Javascript. Gbalịa nyefee ụdị n'okpuru; Javascript anyị ga-egbochi bọtịnụ ntinye ma nyefee gị nzaghachi. Mgbe ị na-agbalị ịnyefe, ị ga-ahụ :invalidna :validụdị ndị etinyere na njikwa ụdị gị.

Ụdị nzaghachi omenala na-etinye agba, oke, ụdị elekwasị anya, na akara ndabere iji nweta nzaghachi ka mma. Akara ngosi ndabere maka <select>s dị naanị .form-selectna ọ bụghị .form-control.

html

<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
(() => {
  'use strict'

  // Fetch all the forms we want to apply custom Bootstrap validation styles to
  const forms = document.querySelectorAll('.needs-validation')

  // Loop over them and prevent submission
  Array.from(forms).forEach(form => {
    form.addEventListener('submit', event => {
      if (!form.checkValidity()) {
        event.preventDefault()
        event.stopPropagation()
      }

      form.classList.add('was-validated')
    }, false)
  })
})()

Nchọgharị ndabara

Enweghị mmasị na ozi nzaghachi nkwado omenala ma ọ bụ ide Javascript iji gbanwee omume ụdị? Ọ dị mma, ịnwere ike iji ndabara ihe nchọgharị ahụ. Gbalịa ịnyefe fọm dị n'okpuru. Dabere na ihe nchọgharị gị na OS, ị ga-ahụ ụdị nzaghachi dịtụ iche.

Ọ bụ ezie na enweghị ike iji CSS hazie ụdị nzaghachi ndị a, ị ka nwere ike hazie ederede nzaghachi site na Javascript.

html

<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>

Akụkụ nkesa

Anyị na-akwado iji nkwado n'akụkụ ndị ahịa, mana ọ bụrụ na ịchọrọ nkwado n'akụkụ nkesa, ị nwere ike igosi oghere na ezighi ezi yana dị irè yana .is-invalidyana .is-valid. Rịba ama na .invalid-feedbackakwadoro ya na klaasị ndị a.

Maka mpaghara ezighi ezi, hụ na ejikọtara nzaghachi/ozi njehie na-ezighi ezi na mpaghara ụdị dị mkpa site na iji aria-describedby(ịkọba ama na njirimara a na-enye ohere ka edetu ihe karịrị otu id, ma ọ bụrụ na mpaghara ahụ na-arụtụ aka na ederede ụdị ọzọ).

Iji dozie nsogbu na radius oke , otu ntinye chọrọ .has-validationklaasị agbakwunyere.

html

<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>

Ihe akwadoro

Ụdị nkwado dị maka njikwa ụdị na ihe ndị a:

<input>s na <textarea>s nwere .form-control(gụnyere ihe ruru otu n'ime otu .form-controlntinye)
<select>s na.form-select
.form-checks

html

<form class="was-validated">
  <div class="mb-3">
    <label for="validationTextarea" class="form-label">Textarea</label>
    <textarea class="form-control" 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>

Ntuziaka ngwaọrụ

Ọ bụrụ na nhazi ụdị gị na-enye ya ohere, ị nwere ike gbanwee .{valid|invalid}-feedbackklaasị maka .{valid|invalid}-tooltipklaasị iji gosipụta nzaghachi nkwado n'ụdị ngwa ọrụ ahaziri. Jide n'aka na ị ga-enwe nne na nna position: relativena ya maka idobe ngwa ọrụ. N'ihe atụ dị n'okpuru, klaasị kọlụm anyị enweela nke a, mana ọrụ gị nwere ike ịchọ nhazi ọzọ.

html

<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

Mgbanwe

$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 6.73.6 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>");

Ngwakọta

A na-ejikọta mixins abụọ ọnụ, site na akaghị aka anyị , iji mepụta ụdị nzaghachi nzaghachi ụdị anyị.

@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-control-color {
    @include form-validation-state-selector($state) {
      @if $enable-validation-icons {
        width: add($form-color-width, $input-height-inner);
      }
    }
  }

  .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:not(:focus),
    > .form-select:not(:focus),
    > .form-floating:not(:focus-within) {
      @include form-validation-state-selector($state) {
        @if $state == "valid" {
          z-index: 3;
        } @else if $state == "invalid" {
          z-index: 4;
        }
      }
    }
  }
}

Maapụ

Nke a bụ maapụ Sass nkwado sitere na _variables.scss. Wepu ma ọ bụ gbasaa nke a ka ịmepụta steeti dị iche iche ma ọ bụ gbakwunyere.

$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
  )
);

Maapụ $form-validation-statesnwere ike ịnwe parampat nhọrọ atọ iji mebie ndụmọdụ ngwaọrụ na ụdị mgbado anya.

Loop

A na-eji ya gụgharịa $form-validation-statesụkpụrụ map iji mepụta ụdị nkwado anyị. Mgbanwe ọ bụla na maapụ Sass dị n'elu ga-egosipụta na CSS gị achịkọtara site na akaghị a.

@each $state, $data in $form-validation-states {
  @include form-validation-state($state, $data...);
}

Nhazi

Enwere ike ịhazi steeti nkwado site na Sass yana $form-validation-statesmaapụ. Dị na _variables.scssfaịlụ anyị, maapụ Sass a bụ ka anyị si ewepụta steeti ndabara valid/ invalidnkwado. Agụnyere bụ maapụ akwụ ụgwọ maka ịhazi agba, akara ngosi, ụcha nrụtụ aka na ndò nke steeti ọ bụla. Ọ bụ ezie na enweghị steeti ndị ọzọ nke ihe nchọgharị na-akwado, ndị na-eji ụdị omenala nwere ike itinye nzaghachi ụdị dị mgbagwoju anya ngwa ngwa.