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Range

カスタムレンジ入力を使用すると、クロスブラウザで一貫したスタイリングが可能になり、カスタマイズも可能です。

概要

<input type="range">.form-rangeを適用します。トラック(背景)とつまみ(値)は、ブラウザ間で同じように表示されるようにスタイリングされています。 進行状況を視覚的に示す手段として、左または右からトラックを「埋める」ことをサポートしているのはFirefoxだけなので、現時点ではサポートしていません。

html
<label for="customRange1" class="form-label">Example range</label>
<input type="range" class="form-range" id="customRange1">

無効化

入力にdisabled属性(Boolean)を追加すると、グレーアウトしたような外観になり、ポインターイベントが削除されます。

html
<label for="disabledRange" class="form-label">Disabled range</label>
<input type="range" class="form-range" id="disabledRange" disabled>

最小・最大値

範囲入力には、minmaxの暗黙の値があり、それぞれ0100となっています。これらの値はminmax属性を使って新たに指定することができます。

html
<label for="customRange2" class="form-label">Example range</label>
<input type="range" class="form-range" min="0" max="5" id="customRange2">

ステップ

デフォルトでは、レンジ入力は整数値に"snap"します。これを変更するには、stepの値を指定することができます。以下の例では、step="0.5"を用いてステップ数を2倍にしています。

html
<label for="customRange3" class="form-label">Example range</label>
<input type="range" class="form-range" min="0" max="5" step="0.5" id="customRange3">

CSS

Sass変数

$form-range-track-width:          100%;
$form-range-track-height:         .5rem;
$form-range-track-cursor:         pointer;
$form-range-track-bg:             var(--#{$prefix}tertiary-bg);
$form-range-track-border-radius:  1rem;
$form-range-track-box-shadow:     $box-shadow-inset;

$form-range-thumb-width:                   1rem;
$form-range-thumb-height:                  $form-range-thumb-width;
$form-range-thumb-bg:                      $component-active-bg;
$form-range-thumb-border:                  0;
$form-range-thumb-border-radius:           1rem;
$form-range-thumb-box-shadow:              0 .1rem .25rem rgba($black, .1);
$form-range-thumb-focus-box-shadow:        0 0 0 1px $body-bg, $input-focus-box-shadow;
$form-range-thumb-focus-box-shadow-width:  $input-focus-width; // For focus box shadow issue in Edge
$form-range-thumb-active-bg:               tint-color($component-active-bg, 70%);
$form-range-thumb-disabled-bg:             var(--#{$prefix}secondary-color);
$form-range-thumb-transition:              background-color .15s ease-in-out, border-color .15s ease-in-out, box-shadow .15s ease-in-out;

` const jsSnippetContent = jsSnippet ? '\/\/ NOTICE!!! Initially embedded in our docs this JavaScript\n\/\/ file contains elements that can help you create reproducible\n\/\/ use cases in StackBlitz for instance\.\n\/\/ In a real project please adapt this content to your needs\.\n\/\/ \u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\u002b\n\n\/\*!\n \* JavaScript for Bootstrap\u0027s docs \(https:\/\/getbootstrap\.com\/\)\n \* Copyright 2011\-2023 The Bootstrap Authors\n \* Licensed under the Creative Commons Attribution 3\.0 Unported License\.\n \* For details, see https:\/\/creativecommons\.org\/licenses\/by\/3\.0\/\.\n \*\/\n\n\/\* global bootstrap: false \*\/\n\n\(\(\) =\u003e \{\n \u0027use strict\u0027\n\n \/\/ \-\-\-\-\-\-\-\-\n \/\/ Tooltips\n \/\/ \-\-\-\-\-\-\-\-\n \/\/ Instantiate all tooltips in a docs or StackBlitz\n document\.querySelectorAll\(\u0027\[data\-bs\-toggle=\u0022tooltip\u0022\]\u0027\)\n \.forEach\(tooltip =\u003e \{\n new bootstrap\.Tooltip\(tooltip\)\n \}\)\n\n \/\/ \-\-\-\-\-\-\-\-\n \/\/ Popovers\n \/\/ \-\-\-\-\-\-\-\-\n \/\/ Instantiate all popovers in docs or StackBlitz\n document\.querySelectorAll\(\u0027\[data\-bs\-toggle=\u0022popover\u0022\]\u0027\)\n \.forEach\(popover =\u003e \{\n new bootstrap\.Popover\(popover\)\n \}\)\n\n \/\/ \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\n \/\/ Toasts\n \/\/ \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\n \/\/ Used by \u0027Placement\u0027 example in docs or StackBlitz\n const toastPlacement = document\.getElementById\(\u0027toastPlacement\u0027\)\n if \(toastPlacement\) \{\n document\.getElementById\(\u0027selectToastPlacement\u0027\)\.addEventListener\(\u0027change\u0027, function \(\) \{\n if \(!toastPlacement\.dataset\.originalClass\) \{\n toastPlacement\.dataset\.originalClass = toastPlacement\.className\n \}\n\n toastPlacement\.className = `\$\{toastPlacement\.dataset\.originalClass\} \$\{this\.value\}`\n \}\)\n \}\n\n \/\/ Instantiate all toasts in docs pages only\n document\.querySelectorAll\(\u0027\.bd\-example \.toast\u0027\)\n \.forEach\(toastNode =\u003e \{\n const toast = new bootstrap\.Toast\(toastNode, \{\n autohide: false\n \}\)\n\n toast\.show\(\)\n \}\)\n\n \/\/ Instantiate all toasts in docs pages only\n \/\/ js\-docs\-start live\-toast\n const toastTrigger = document\.getElementById\(\u0027liveToastBtn\u0027\)\n const toastLiveExample = document\.getElementById\(\u0027liveToast\u0027\)\n\n if \(toastTrigger\) \{\n const toastBootstrap = bootstrap\.Toast\.getOrCreateInstance\(toastLiveExample\)\n toastTrigger\.addEventListener\(\u0027click\u0027, \(\) =\u003e \{\n toastBootstrap\.show\(\)\n \}\)\n \}\n \/\/ js\-docs\-end live\-toast\n\n \/\/ \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\n \/\/ Alerts\n \/\/ \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\n \/\/ Used in \u0027Show live alert\u0027 example in docs or StackBlitz\n\n \/\/ js\-docs\-start live\-alert\n const alertPlaceholder = document\.getElementById\(\u0027liveAlertPlaceholder\u0027\)\n const appendAlert = \(message, type\) =\u003e \{\n const wrapper = document\.createElement\(\u0027div\u0027\)\n wrapper\.innerHTML = \[\n `\u003cdiv class=\u0022alert alert\-\$\{type\} alert\-dismissible\u0022 role=\u0022alert\u0022\u003e`,\n ` \u003cdiv\u003e\$\{message\}\u003c\/div\u003e`,\n \u0027 \u003cbutton type=\u0022button\u0022 class=\u0022btn\-close\u0022 data\-bs\-dismiss=\u0022alert\u0022 aria\-label=\u0022Close\u0022\u003e\u003c\/button\u003e\u0027,\n \u0027\u003c\/div\u003e\u0027\n \]\.join\(\u0027\u0027\)\n\n alertPlaceholder\.append\(wrapper\)\n \}\n\n const alertTrigger = document\.getElementById\(\u0027liveAlertBtn\u0027\)\n if \(alertTrigger\) \{\n alertTrigger\.addEventListener\(\u0027click\u0027, \(\) =\u003e \{\n appendAlert\(\u0027Nice, you triggered this alert message!\u0027, \u0027success\u0027\)\n \}\)\n \}\n \/\/ js\-docs\-end live\-alert\n\n \/\/ \-\-\-\-\-\-\-\-\n \/\/ Carousels\n \/\/ \-\-\-\-\-\-\-\-\n \/\/ Instantiate all non\-autoplaying carousels in docs or StackBlitz\n document\.querySelectorAll\(\u0027\.carousel:not\(\[data\-bs\-ride=\u0022carousel\u0022\]\)\u0027\)\n \.forEach\(carousel =\u003e \{\n bootstrap\.Carousel\.getOrCreateInstance\(carousel\)\n \}\)\n\n \/\/ \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\n \/\/ Checks \u0026 Radios\n \/\/ \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\n \/\/ Indeterminate checkbox example in docs and StackBlitz\n document\.querySelectorAll\(\u0027\.bd\-example\-indeterminate \[type=\u0022checkbox\u0022\]\u0027\)\n \.forEach\(checkbox =\u003e \{\n if \(checkbox\.id\.includes\(\u0027Indeterminate\u0027\)\) \{\n checkbox\.indeterminate = true\n \}\n \}\)\n\n \/\/ \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\n \/\/ Links\n \/\/ \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\n \/\/ Disable empty links in docs examples only\n document\.querySelectorAll\(\u0027\.bd\-content \[href=\u0022#\u0022\]\u0027\)\n \.forEach\(link =\u003e \{\n link\.addEventListener\(\u0027click\u0027, event =\u003e \{\n event\.preventDefault\(\)\n \}\)\n \}\)\n\n \/\/ \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\n \/\/ Modal\n \/\/ \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\n \/\/ Modal \u0027Varying modal content\u0027 example in docs and StackBlitz\n \/\/ js\-docs\-start varying\-modal\-content\n const exampleModal = document\.getElementById\(\u0027exampleModal\u0027\)\n if \(exampleModal\) \{\n exampleModal\.addEventListener\(\u0027show\.bs\.modal\u0027, event =\u003e \{\n \/\/ Button that triggered the modal\n const button = event\.relatedTarget\n \/\/ Extract info from data\-bs\-\* attributes\n const recipient = button\.getAttribute\(\u0027data\-bs\-whatever\u0027\)\n \/\/ If necessary, you could initiate an Ajax request here\n \/\/ and then do the updating in a callback\.\n\n \/\/ Update the modal\u0027s content\.\n const modalTitle = exampleModal\.querySelector\(\u0027\.modal\-title\u0027\)\n const modalBodyInput = exampleModal\.querySelector\(\u0027\.modal\-body input\u0027\)\n\n modalTitle\.textContent = `New message to \$\{recipient\}`\n modalBodyInput\.value = recipient\n \}\)\n \}\n \/\/ js\-docs\-end varying\-modal\-content\n\n \/\/ \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\n \/\/ Offcanvas\n \/\/ \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\n \/\/ \u0027Offcanvas components\u0027 example in docs only\n const myOffcanvas = document\.querySelectorAll\(\u0027\.bd\-example\-offcanvas \.offcanvas\u0027\)\n if \(myOffcanvas\) \{\n myOffcanvas\.forEach\(offcanvas =\u003e \{\n offcanvas\.addEventListener\(\u0027show\.bs\.offcanvas\u0027, event =\u003e \{\n event\.preventDefault\(\)\n \}, false\)\n \}\)\n \}\n\}\)\(\)\n' : null const project = { files: { 'index.html': markup, 'index.js': jsSnippetContent }, title: 'Bootstrap Example', description: `Official example from ${window.location.href}`, template: jsSnippet ? 'javascript' : 'html', tags: ['bootstrap'] } StackBlitzSDK.openProject(project, { openFile: 'index.html' }) }