Text Area
Documentation
The TextArea is a widget 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.
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<template>
<div>
<div class="dx-fieldset">
<div class="dx-fieldset-header">Default Mode</div>
<div class="dx-field">
<dx-check-box
:value="false"
text="Limit text length"
@value-changed="onCheckboxValueChanged"
/>
</div>
</div>
<div class="left-content">
<dx-text-area
:height="90"
:max-length="maxLength"
:value.sync="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">
<dx-select-box
:items="valueChangeEvents"
:value.sync="eventValue"
value-expr="name"
display-expr="title"
/>
</div>
</div>
</div>
<dx-text-area
:height="90"
:value.sync="valueForEditableTextArea"
:value-change-event="eventValue"
/>
<dx-text-area
:height="90"
:read-only="true"
:value="valueForEditableTextArea"
/>
</div>
</div>
</template>
<script>
import {
DxTextArea,
DxCheckBox,
DxSelectBox
} from 'devextreme-vue';
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 Vue from 'vue';
import App from './App.vue';
new Vue({
el: '#app',
components: { App },
template: '<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/19.1.5/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.1.5/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">
<span v-if="false">Loading...</span>
</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',
paths: {
'npm:': 'https://unpkg.com/'
},
map: {
vue: 'npm:vue@2.6.3/dist/vue.esm.browser.js',
'vue-loader': 'npm:systemjs-vue-browser@latest/index.js',
'devextreme': 'npm:devextreme@19.1',
'devextreme-vue': 'npm:devextreme-vue@19.1',
jszip: 'npm:jszip@3.1.3/dist/jszip.min.js',
'quill': 'npm:quill@1.3.6/dist/quill.js',
'devexpress-diagram': 'npm:devexpress-diagram',
'plugin-babel': 'npm:systemjs-plugin-babel@0/plugin-babel.js',
'systemjs-babel-build': 'npm:systemjs-plugin-babel@0/systemjs-babel-browser.js'
},
meta: {
'*.vue': { loader: 'vue-loader' }
},
packages: {
'devextreme-vue': {
main: 'index.js'
},
'devextreme': {
defaultExtension: 'js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true
}
});