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    Text Area

    Text Area

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    The TextArea is a UI component that enables a user to enter and edit a multi-line text.

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    $(() => { const exampleTextArea = $('#example-textarea').dxTextArea({ value: longText, height: 90, }).dxTextArea('instance'); $('#set-max-length').dxCheckBox({ value: false, onValueChanged(data) { if (data.value) { exampleTextArea.option('value', (exampleTextArea.option('value')).substring(0, 100)); exampleTextArea.option('maxLength', 100); } else { exampleTextArea.option('maxLength', null); exampleTextArea.option('value', longText); } }, text: 'Limit text length', }); const valueChangeEvents = [{ title: 'On Blur', name: 'change', }, { title: 'On Key Up', name: 'keyup', }]; $('#change-event').dxSelectBox({ items: valueChangeEvents, value: valueChangeEvents[0].name, valueExpr: 'name', displayExpr: 'title', onValueChanged(data) { editingTextArea.option('valueChangeEvent', data.value); }, }); const editingTextArea = $('#editing-textarea').dxTextArea({ value: longText, height: 90, valueChangeEvent: 'change', onValueChanged(data) { disabledTextArea.option('value', data.value); }, }).dxTextArea('instance'); const disabledTextArea = $('#disabled-textarea').dxTextArea({ value: longText, height: 90, readOnly: true, }).dxTextArea('instance'); });
    <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <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" /> <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/21.2.4/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.2.4/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/21.2.4/js/dx.all.js"></script> <script src="data.js"></script> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="index.js"></script> </head> <body class="dx-viewport"> <div class="demo-container"> <div class="dx-fieldset"> <div class="dx-fieldset-header">Default Mode</div> <div class="dx-field"> <div id="set-max-length"></div> </div> </div> <div class="left-content"> <div id="example-textarea"></div> </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"> <div id="change-event"></div> </div> </div> </div> <div id="editing-textarea"></div> <div id="disabled-textarea"></div> </div> </div> </body> </html>
    .full-width-content { width: 100%; margin-top: 30px; } .full-width-content > .dx-widget { margin-bottom: 20px; } .full-width-content .dx-field { max-width: 385px; }
    const longText = '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.';