DevExtreme Accessibility Compliance
DevExtreme component libraries meet a variety of WCAG and Section 508 compliance standards. To assess this demo’s accessibility level, click the Run AXE® Validation button to launch the AXE® web accessibility evaluation tool.
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The overall accessibility level of your application depends on the DropDownButton features used.
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Backend API
$(() => {
$('#one-section').dxDropDownButton({
text: 'Download Trial',
icon: 'save',
dropDownOptions: {
width: 230,
},
onItemClick(e) {
DevExpress.ui.notify(`Download ${e.itemData}`, 'success', 600);
},
items: downloads,
});
$('#custom-template').dxDropDownButton({
items: profileSettings,
splitButton: true,
onButtonClick(e) {
DevExpress.ui.notify(`Go to ${e.element.find('.button-title').text()}'s profile`, 'success', 600);
},
onItemClick(e) {
DevExpress.ui.notify(e.itemData.name, 'success', 600);
},
displayExpr: 'name',
keyExpr: 'id',
useSelectMode: false,
template(data, element) {
const $imageContainer = $('<div>')
.addClass('button-img-container').appendTo(element);
$('<div>')
.addClass('button-img-indicator').appendTo($imageContainer);
$('<img>')
.addClass('button-img')
.attr({
src: '../../../../images/employees/51.png',
alt: 'employee',
}).appendTo($imageContainer);
const $textContainer = $('<div>')
.addClass('text-container').appendTo(element);
$('<div>')
.addClass('button-title').text('Olivia Peyton')
.appendTo($textContainer);
$('<div>')
.addClass('button-row').text('IT Manager').appendTo($textContainer);
return $(element);
},
});
$('#template').dxToolbar({
items: [
{
location: 'before',
widget: 'dxDropDownButton',
options: {
displayExpr: 'name',
keyExpr: 'id',
selectedItemKey: 3,
width: 125,
stylingMode: 'text',
useSelectMode: true,
onSelectionChanged(e) {
$('#text').css('text-align', e.item.name.toLowerCase());
},
items: alignments,
},
},
{
location: 'before',
widget: 'dxDropDownButton',
options: {
items: colors,
icon: 'square',
stylingMode: 'text',
dropDownOptions: { width: 'auto' },
onInitialized(e) {
dropDownButton = e.component;
},
dropDownContentTemplate(data, $container) {
const $colorPicker = $('<div>')
.addClass('custom-color-picker')
.appendTo($container);
data.forEach((color) => {
const $button = $('<i>')
.addClass('color dx-icon dx-icon-square')
.on('dxclick', () => {
applyColor($('#text'), color);
applyColor(dropDownButton.$element().find('.dx-dropdownbutton-action .dx-icon').first(), color);
dropDownButton.close();
});
applyColor($button, color);
$colorPicker.append($button);
});
},
},
},
{
location: 'before',
widget: 'dxDropDownButton',
options: {
stylingMode: 'text',
displayExpr: 'text',
keyExpr: 'size',
useSelectMode: true,
items: fontSizes,
selectedItemKey: 14,
onSelectionChanged(e) {
$('#text').css('font-size', `${e.item.size}px`);
},
itemTemplate(itemData) {
return $('<div>')
.text(itemData.text)
.css('font-size', `${itemData.size}px`);
},
},
},
{
location: 'before',
widget: 'dxDropDownButton',
options: {
stylingMode: 'text',
icon: 'indent',
displayExpr: 'text',
keyExpr: 'lineHeight',
useSelectMode: true,
items: lineHeights,
selectedItemKey: 1.35,
onSelectionChanged(e) {
$('#text').css('line-height', e.item.lineHeight);
},
},
},
],
});
});
let dropDownButton;
function applyColor($element, color) {
if (color) {
$element.css('color', color);
} else {
$element.css('color', '');
}
}
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script>
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.1.6/css/dx.light.css" />
<script src="js/dx.all.js"></script>
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="data.js"></script>
<script src="index.js"></script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div class="dx-fieldset">
<div class="dx-fieldset-header">Standalone button</div>
<div class="dx-field">
<div class="dx-field-label">Text and icon</div>
<div class="dx-field-value">
<div id="one-section"></div>
</div>
</div>
<div class="dx-field">
<div class="dx-field-label">Custom template and actions</div>
<div class="dx-field-value">
<div id="custom-template"></div>
</div>
</div>
</div>
<div class="dx-fieldset">
<div class="dx-fieldset-header">Embedded in a Toolbar</div>
<div class="dx-field">
<div id="template"></div>
</div>
<div class="dx-field">
<p id="text"
>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco
laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat
non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p
>
</div>
</div>
</div>
</body>
</html>
.demo-container .dx-fieldset:first-child {
width: 500px;
}
.custom-color-picker {
width: 82px;
padding: 5px;
}
.color {
cursor: pointer;
font-size: 18px;
}
#text {
line-height: 1.35;
}
.text-container {
padding-inline-start: 12px;
padding-inline-end: 4px;
display: flex;
align-items: flex-start;
flex-direction: column;
}
.button-img-container {
position: relative;
height: 32px;
}
.button-img {
width: 32px;
height: 32px;
position: relative;
border-width: 1px;
border-style: solid;
border-color: var(--dx-color-border);
border-radius: 50%;
}
.button-img-indicator {
position: absolute;
background-color: var(--dx-color-danger);
top: -1px;
inset-inline-end: -1px;
width: 10px;
height: 10px;
border-radius: 50%;
border-width: 2px;
border-style: solid;
border-color: var(--dx-color-main-bg);
z-index: 1;
}
.button-title {
line-height: 20px;
}
.button-row {
font-size: 12px;
line-height: 14px;
opacity: 0.6;
}
#custom-template .dx-button {
height: 46px;
}
#custom-template .dx-button.dx-dropdownbutton-action .dx-button-content {
padding-inline-start: 12px;
padding-inline-end: 12px;
}
const colors = [null, '#980000', '#ff0000', '#ff9900', '#ffff00', '#00ff00', '#00ffff', '#4a86e8', '#0000ff', '#9900ff', '#ff00ff', '#ff3466'];
const profileSettings = [
{ id: 1, name: 'Profile', icon: 'user' },
{
id: 4, name: 'Messages', icon: 'email', badge: '5',
},
{ id: 2, name: 'Friends', icon: 'group' },
{ id: 3, name: 'Exit', icon: 'runner' },
];
const downloads = ['Download Trial For Visual Studio', 'Download Trial For All Platforms', 'Package Managers'];
const alignments = [
{ id: 1, name: 'Left', icon: 'alignleft' },
{ id: 4, name: 'Right', icon: 'alignright' },
{ id: 2, name: 'Center', icon: 'aligncenter' },
{ id: 3, name: 'Justify', icon: 'alignjustify' },
];
const fontSizes = [
{ size: 10, text: '10px' },
{ size: 12, text: '12px' },
{ size: 14, text: '14px' },
{ size: 16, text: '16px' },
{ size: 18, text: '18px' },
];
const lineHeights = [
{ lineHeight: 1, text: '1' },
{ lineHeight: 1.35, text: '1.35' },
{ lineHeight: 1.5, text: '1.5' },
{ lineHeight: 2, text: '2' },
];
Menu items can be specified in the items or dataSource properties. Use dataSource if data is remote or should be processed.
JavaScript DropDownButton stores the most recent selected menu item if you set the useSelectMode property to true. In this case, the button uses the selected item's text and icon.
To customize JavaScript DropDownButton, specify the the following options:
-
itemTemplate
Customizes menu items. -
template
Customizes a base button. -
dropDownContentTemplate
Replaces the drop-down menu with custom content.
To track and handle events, use the onButtonClick, onItemClick, and onSelectionChanged event handlers.