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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Backend API
<template>
<div>
<DxHtmlEditor
:value="markup"
height="725px"
>
<DxMediaResizing :enabled="true"/>
<DxImageUpload
:tabs="currentTabs"
file-upload-mode="base64"
/>
<DxToolbar :multiline="isMultiline">
<DxItem name="undo"/>
<DxItem name="redo"/>
<DxItem name="separator"/>
<DxItem
name="size"
:accepted-values="sizeValues"
:options="fontSizeOptions"
/>
<DxItem
name="font"
:accepted-values="fontValues"
:options="fontFamilyOptions"
/>
<DxItem name="separator"/>
<DxItem name="bold"/>
<DxItem name="italic"/>
<DxItem name="strike"/>
<DxItem name="underline"/>
<DxItem name="separator"/>
<DxItem name="alignLeft"/>
<DxItem name="alignCenter"/>
<DxItem name="alignRight"/>
<DxItem name="alignJustify"/>
<DxItem name="separator"/>
<DxItem name="orderedList"/>
<DxItem name="bulletList"/>
<DxItem name="separator"/>
<DxItem
name="header"
:accepted-values="headerValues"
:options="headerOptions"
/>
<DxItem name="separator"/>
<DxItem name="color"/>
<DxItem name="background"/>
<DxItem name="separator"/>
<DxItem name="link"/>
<DxItem name="image"/>
<DxItem name="separator"/>
<DxItem name="clear"/>
<DxItem name="codeBlock"/>
<DxItem name="blockquote"/>
<DxItem name="separator"/>
<DxItem name="insertTable"/>
<DxItem name="deleteTable"/>
<DxItem name="insertRowAbove"/>
<DxItem name="insertRowBelow"/>
<DxItem name="deleteRow"/>
<DxItem name="insertColumnLeft"/>
<DxItem name="insertColumnRight"/>
<DxItem name="deleteColumn"/>
</DxToolbar>
</DxHtmlEditor>
<div class="options">
<div class="caption">Options</div>
<div class="option">
<DxCheckBox
v-model:value="isMultiline"
text="Multiline toolbar"
/>
</div>
<div class="option">
<div class="label">Image upload tabs:</div>
<DxSelectBox
:items="tabs"
:input-attr="{ 'aria-label': 'Tab' }"
v-model:value="currentTabs"
display-expr="name"
value-expr="value"
/>
</div>
</div>
</div>
</template>
<script setup lang="ts">
import { ref } from 'vue';
import {
DxHtmlEditor,
DxToolbar,
DxMediaResizing,
DxImageUpload,
DxItem,
} from 'devextreme-vue/html-editor';
import {
DxCheckBox,
} from 'devextreme-vue/check-box';
import {
DxSelectBox,
} from 'devextreme-vue/select-box';
import { markup, tabs } from './data.ts';
const sizeValues = ['8pt', '10pt', '12pt', '14pt', '18pt', '24pt', '36pt'];
const fontValues = ['Arial', 'Courier New', 'Georgia', 'Impact', 'Lucida Console', 'Tahoma', 'Times New Roman', 'Verdana'];
const headerValues = [false, 1, 2, 3, 4, 5];
const currentTabs = ref(tabs[2].value);
const isMultiline = ref(true);
const fontSizeOptions = { inputAttr: { 'aria-label': 'Font size' } };
const fontFamilyOptions = { inputAttr: { 'aria-label': 'Font family' } };
const headerOptions = { inputAttr: { 'aria-label': 'Font family' } };
</script>
<style>
.dx-htmleditor-content img {
vertical-align: middle;
padding-right: 10px;
}
.dx-htmleditor-content table {
width: 50%;
}
.options {
padding: 20px;
background-color: rgba(191, 191, 191, 0.15);
margin-top: 20px;
}
.caption {
font-size: 18px;
font-weight: 500;
}
.option {
margin-top: 10px;
display: inline-block;
margin-right: 40px;
}
.option > .dx-selectbox,
.option > .label {
display: inline-block;
vertical-align: middle;
}
.option > .label {
margin-right: 10px;
}
</style>
window.exports = window.exports || {};
window.config = {
transpiler: 'plugin-babel',
meta: {
'*.vue': {
loader: 'vue-loader',
},
'*.ts': {
loader: 'demo-ts-loader',
},
'*.svg': {
loader: 'svg-loader',
},
'devextreme/time_zone_utils.js': {
'esModule': true,
},
'devextreme/localization.js': {
'esModule': true,
},
'devextreme/viz/palette.js': {
'esModule': true,
},
'openai': {
'esModule': true,
},
},
paths: {
'project:': '../../../../',
'npm:': 'https://cdn.jsdelivr.net/npm/',
'bundles:': '../../../../bundles/',
'externals:': '../../../../bundles/externals/',
},
map: {
'vue': 'npm:vue@3.4.27/dist/vue.esm-browser.js',
'@vue/shared': 'npm:@vue/shared@3.4.27/dist/shared.cjs.prod.js',
'vue-loader': 'npm:dx-systemjs-vue-browser@1.1.2/index.js',
'demo-ts-loader': 'project:utils/demo-ts-loader.js',
'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js',
'svg-loader': 'project:utils/svg-loader.js',
'mitt': 'npm:mitt/dist/mitt.umd.js',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@3.4.4/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign',
'devextreme': 'npm:devextreme@24.2.7/cjs',
'devextreme-vue': 'npm:devextreme-vue@24.2.7/cjs',
'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.16/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.60/dist/dx-gantt.js',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.12',
'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',
'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js',
'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js',
'inferno-hydrate': 'npm:inferno-hydrate/dist/inferno-hydrate.min.js',
'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js',
'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js',
'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js',
'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js',
'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js',
// Prettier
'prettier/standalone': 'npm:prettier@2.8.8/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js',
},
packages: {
'devextreme-vue': {
main: 'index.js',
},
'devextreme': {
defaultExtension: 'js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/common/core/events/utils': {
main: 'index',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@3.0.12/inferno/package.json',
],
babelOptions: {
sourceMaps: false,
stage0: true,
},
};
System.config(window.config);
import { type DxHtmlEditorTypes } from 'devextreme-vue/html-editor';
export const tabs: {
name: string,
value: DxHtmlEditorTypes.HtmlEditorImageUploadTab[]
}[] = [
{ name: 'From This Device', value: ['file'] },
{ name: 'From the Web', value: ['url'] },
{ name: 'Both', value: ['file', 'url'] },
];
export const markup = `
<h2>
<img src="../../../../images/widgets/HtmlEditor.svg" alt="HtmlEditor">
Formatted Text Editor (HTML Editor)
</h2>
<br>
<p>DevExtreme JavaScript HTML Editor is a client-side WYSIWYG text editor that allows its users to format textual and visual content and store it as HTML.</p>
<p>Supported features:</p>
<ul>
<li>Inline formats:
<ul>
<li><strong>Bold</strong>, <em>italic</em>, <s>strikethrough</s> text formatting</li>
<li>Font, size, color changes (HTML only)</li>
</ul>
</li>
<li>Block formats:
<ul>
<li>Headers</li>
<li>Text alignment</li>
<li>Lists (ordered and unordered)</li>
<li>Code blocks</li>
<li>Quotes</li>
</ul>
</li>
<li>Custom formats</li>
<li>Mail-merge placeholders (for example, %username%)</li>
<li>Adaptive toolbar for working images, links, and color formats</li>
<li>Image upload: drag-and-drop images onto the form, select files from the file system, or specify a URL.</li>
<li>Copy-paste rich content (unsupported formats are removed)</li>
<li>Tables support</li>
</ul>
<br>
<p>Supported frameworks and libraries</p>
<table>
<tr>
<td><strong>jQuery</strong></td>
<td style="text-align: right;">v2.1 - v2.2 and v3.x</td>
</tr>
<tr>
<td><strong>Angular</strong></td>
<td style="text-align: right;">v7.0+</td>
</tr>
<tr>
<td><strong>React</strong></td>
<td style="text-align: right;">v16.2+</td>
</tr>
<tr>
<td><strong>Vue</strong></td>
<td style="text-align: right;">v2.6.3+</td>
</tr>
</table>
`;
import { createApp } from 'vue';
import App from './App.vue';
createApp(App).mount('#app');
<!DOCTYPE html>
<html 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" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.2.7/css/dx.light.css" />
<script src="https://cdn.jsdelivr.net/npm/typescript@5.4.5/lib/typescript.js"></script>
<script type="module">
import * as vueCompilerSFC from "https://cdn.jsdelivr.net/npm/@vue/compiler-sfc@3.4.27/dist/compiler-sfc.esm-browser.js";
window.vueCompilerSFC = vueCompilerSFC;
</script>
<script src="https://cdn.jsdelivr.net/npm/core-js@2.6.12/client/shim.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/systemjs@0.21.3/dist/system.js"></script>
<script type="text/javascript" src="config.js"></script>
<script type="text/javascript">
System.import("./index.ts");
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"> </div>
</div>
</body>
</html>
You can use the toolbar.multiline property to arrange the toolbar controls into multiple rows.
Users can resize media files when the mediaResizing is enabled. Currently, only images are supported.
To get started with the DevExtreme HTML Editor component, refer to the following tutorial for step-by-step instructions: Getting Started with HTML Editor.