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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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    $(function(){ var exampleTextArea = $("#example-textarea").dxTextArea({ value: longText, height: 90 }).dxTextArea("instance"); $("#set-max-length").dxCheckBox({ value: false, onValueChanged: function(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" }); var 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: function(data) { editingTextArea.option("valueChangeEvent", data.value); } }); var editingTextArea = $("#editing-textarea").dxTextArea({ value: longText, height: 90, valueChangeEvent: "change", onValueChanged: function(data) { disabledTextArea.option("value", data.value); } }).dxTextArea("instance"); var 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/21.1.5/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.5/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/21.1.5/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; }
    var 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.";