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Form

Overview

The Form component builds a data entry UI for an object assigned to the formData property. The component displays and aligns label-editor pairs for each field in the bound object.

You can use the editors on the right to modify the following properties:

  • labelLocation
    Specifies whether to display labels above or to the left of corresponding editors.

  • colCount
    Specifies the number of columns in the layout. To build an adaptive layout where the column count depends on the container width, set this property's value to "auto".

  • minColWidth
    Specifies the minimum column width. Use this property when the colCount property's value is "auto".

  • width
    Specifies the Form component's width.

  • readOnly
    Makes the Form editors read-only.

  • showColonAfterLabel
    Specifies whether the Form displays a colon after a label.

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window.onload = function() { var showColon = ko.observable(true), formData = ko.observable(companies[0]), readOnly = ko.observable(false), labelLocation = ko.observable("top"), minColWidth = ko.observable(300), colCount = ko.observable(2), widthValue = ko.observable(undefined); var viewModel = { formOptions: { formData: formData, readOnly: readOnly, showColonAfterLabel: showColon, labelLocation: labelLocation, minColWidth: minColWidth, colCount: colCount, width: widthValue }, selectCompanyOptions: { displayExpr: "Name", dataSource: companies, value: formData }, readOnlyOptions: { value: readOnly, text: "readOnly" }, showColonOptions: { value: showColon, text: "showColonAfterLabel" }, labelLocationOptions: { items: ["left", "top"], value: labelLocation }, minColWidthOptions: { items: [150, 200, 300], value: minColWidth }, colCountOptions: { items: ["auto", 1, 2, 3], value: colCount }, widthOptions: { max: 550, value: widthValue } }; ko.applyBindings(viewModel, document.getElementById("form-demo")); };
<!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> <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.2/knockout-min.js"></script> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.4/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.4/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/21.1.4/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 id="form-demo"> <div class="widget-container"> <div>Select company:</div> <div data-bind="dxSelectBox: selectCompanyOptions"></div> <div id="form" data-bind="dxForm: formOptions"></div> </div> <div class="options"> <div class="caption">Options</div> <div class="option"> <span>Label location:</span> <div data-bind="dxSelectBox: labelLocationOptions"></div> </div> <div class="option"> <span>Columns count:</span> <div data-bind="dxSelectBox: colCountOptions"></div> </div> <div class="option"> <span>Min column width:</span> <div data-bind="dxSelectBox: minColWidthOptions"></div> </div> <div class="option"> <span>Form width:</span> <div data-bind="dxNumberBox: widthOptions"></div> </div> <div class="option"> <div data-bind="dxCheckBox: readOnlyOptions"></div> </div> <div class="option"> <div data-bind="dxCheckBox: showColonOptions"></div> </div> </div> </div> </div> </body> </html>
.widget-container { margin-right: 320px; padding: 20px; max-width: 550px; min-width: 300px; } #form { margin-top: 25px; } .options { padding: 20px; position: absolute; bottom: 0; right: 0; width: 260px; top: 0; background-color: rgba(191, 191, 191, 0.15); } .caption { font-size: 18px; font-weight: 500; } .option { margin-top: 10px; }
var companies = [{ "ID": 1, "Name": "Super Mart of the West", "Address": "702 SW 8th Street", "City": "Bentonville", "State": "Arkansas", "ZipCode": 72716, "Phone": "(800) 555-2797", "Fax": "(800) 555-2171", "Website": "http://www.nowebsitesupermart.com" }, { "ID": 2, "Name": "Electronics Depot", "Address": "2455 Paces Ferry Road NW", "City": "Atlanta", "State": "Georgia", "ZipCode": 30339, "Phone": "(800) 595-3232", "Fax": "(800) 595-3231", "Website": "http://www.nowebsitedepot.com" }, { "ID": 3, "Name": "K&S Music", "Address": "1000 Nicllet Mall", "City": "Minneapolis", "State": "Minnesota", "ZipCode": 55403, "Phone": "(612) 304-6073", "Fax": "(612) 304-6074", "Website": "http://www.nowebsitemusic.com" }, { "ID": 4, "Name": "Tom's Club", "Address": "999 Lake Drive", "City": "Issaquah", "State": "Washington", "ZipCode": 98027, "Phone": "(800) 955-2292", "Fax": "(800) 955-2293", "Website": "http://www.nowebsitetomsclub.com" }];