Text Area
Documentation
The TextArea is a UI component that enables a user to enter and edit a multi-line text.
Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
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We appreciate your feedback.
<template>
<div>
<div class="dx-fieldset">
<div class="dx-fieldset-header">Default Mode</div>
<div class="dx-field">
<DxCheckBox
:value="false"
text="Limit text length"
@value-changed="onCheckboxValueChanged"
/>
</div>
</div>
<div class="left-content">
<DxTextArea
:height="90"
:max-length="maxLength"
v-model:value="value"
/>
</div>
<div class="full-width-content">
<div class="dx-fieldset">
<div class="dx-fieldset-header">Event Handling and API</div>
<div class="dx-field">
<div class="dx-field-label">Synchronize text areas </div>
<div class="dx-field-value">
<DxSelectBox
:items="valueChangeEvents"
v-model:value="eventValue"
value-expr="name"
display-expr="title"
/>
</div>
</div>
</div>
<DxTextArea
:height="90"
v-model:value="valueForEditableTextArea"
:value-change-event="eventValue"
/>
<DxTextArea
:height="90"
:read-only="true"
:value="valueForEditableTextArea"
/>
</div>
</div>
</template>
<script>
import DxTextArea from 'devextreme-vue/text-area';
import DxCheckBox from 'devextreme-vue/check-box';
import DxSelectBox from 'devextreme-vue/select-box';
import service from './data.js';
export default {
components: {
DxCheckBox,
DxTextArea,
DxSelectBox
},
data() {
return {
eventValue: service.valueChangeEvents[0].name,
maxLength: null,
value: service.getContent(),
valueForEditableTextArea: service.getContent(),
valueChangeEvents: service.valueChangeEvents
};
},
methods: {
onCheckboxValueChanged(e) {
if (e.value) {
this.value = service.getContent().substring(0, 100);
this.maxLength = 100;
} else {
this.value = service.getContent();
this.maxLength = null;
}
}
}
};
</script>
<style>
.full-width-content {
width: 100%;
margin-top: 30px;
}
.full-width-content > .dx-widget {
margin-bottom: 20px;
}
.full-width-content .dx-field {
max-width: 385px;
}
</style>
import { createApp } from 'vue';
import App from './App.vue';
createApp(App).mount('#app');
<!DOCTYPE html>
<html>
<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=1.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.6/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.6/css/dx.light.css" />
<script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script type="text/javascript" src="config.js"></script>
<script type="text/javascript">
System.import('./index.js');
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app">
</div>
</div>
</body>
</html>
const valueChangeEvents = [{
title: 'On Blur',
name: 'change'
}, {
title: 'On Key Up',
name: 'keyup'
}];
let content = 'Prepare 2013 Marketing Plan: We need to double revenues in 2013 and our marketing strategy is going to be key here. R&D is improving existing products and creating new products so we can deliver great AV equipment to our customers.Robert, please make certain to create a PowerPoint presentation for the members of the executive team.';
export default {
valueChangeEvents: valueChangeEvents,
getContent() {
return content;
}
};
System.config({
transpiler: 'plugin-babel',
meta: {
'*.vue': {
loader: 'vue-loader'
},
'devextreme/localization.js': {
"esModule": true
},
},
paths: {
'npm:': 'https://unpkg.com/'
},
map: {
'vue': 'npm:vue@3.0.0/dist/vue.esm-browser.js',
'vue-loader': 'npm:dx-systemjs-vue-browser@1.0.15/index.js',
'mitt': 'npm:mitt/dist/mitt.umd.js',
'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.26.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@20.2.6',
'devextreme-vue': 'npm:devextreme-vue@20.2.6',
'jszip': 'npm:jszip@3.6.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@0.10.3/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.0.18/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@2.0.24/dist/dx-gantt.js',
'preact': 'npm:preact@10.5.13/dist/preact.js',
'preact/hooks': 'npm:preact@10.5.13/hooks/dist/hooks.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'
},
packages: {
'devextreme-vue': {
main: 'index.js'
},
'devextreme': {
defaultExtension: 'js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true
}
});