Your search did not match any results.
Validation

Validation

This demo shows how to implement a default validation group - a group of editors on a page with enabled data validation. In this particular demo, the editors are grouped in an HTML form.

To enable data validation for an editor, you need to declare the Validator component and implement validation rules. You can attach multiple validation rules to one component. The following list contains all available validation rule types:

  • required
    A validation rule that requires the validated field to have a value.

  • email
    A validation rule that requires the validated field to match the Email pattern.

  • async
    A custom validation rule used for server-side validation. Implement the validationCallback function to validate the target value.

  • compare
    A validation rule that requires the validated editor's value to equal the value of the specified expression. To apply this rule, implement the comparisonTarget function to specify the value against which this component compares the validated value.

  • pattern
    A validation rule that requires the validated field to match a specified pattern.

  • stringLength
    A validation rule that requires the target value length to fall within the range of the specified minimum and maximum values. This property only accepts string values.

  • range
    A validation rule that requires the target value length to fall within the range of the specified minimum and maximum values. This property only accepts date-time and numeric values.

  • numeric
    A validation rule that requires the validated field to have a numeric value.

  • custom
    A rule with custom validation logic. Implement the validationCallback function to validate the target value.

All validation rule types allow you to specify an error message for a component. If your application implements a validation group, you can use a validation summary to display all validation errors in one place. In this demo, click the Register button to see a validation summary.

The Register button's useSubmitBehavior property is enabled. As a result, a click on the button validates and submits the HTML form. In your application, you can also implement the button's onClick event handler and use the validate() or validateGroup() method to validate a group of editors.

Backend API
Copy to CodePen
Apply
Reset
$(() => { const maxDate = new Date(); maxDate.setFullYear(maxDate.getFullYear() - 21); const sendRequest = function (value) { const invalidEmail = 'test@dx-email.com'; const d = $.Deferred(); setTimeout(() => { d.resolve(value !== invalidEmail); }, 1000); return d.promise(); }; $('#summary').dxValidationSummary({ }); $('#email-validation').dxTextBox({}) .dxValidator({ validationRules: [{ type: 'required', message: 'Email is required', }, { type: 'email', message: 'Email is invalid', }, { type: 'async', message: 'Email is already registered', validationCallback(params) { return sendRequest(params.value); }, }], }); $('#password-validation').dxTextBox({ mode: 'password', }).dxValidator({ validationRules: [{ type: 'required', message: 'Password is required', }], }); $('#confirm-password-validation').dxTextBox({ mode: 'password', }).dxValidator({ validationRules: [{ type: 'compare', comparisonTarget() { const password = $('#password-validation').dxTextBox('instance'); if (password) { return password.option('value'); } return null; }, message: "'Password' and 'Confirm Password' do not match.", }, { type: 'required', message: 'Confirm Password is required', }], }); $('#name-validation').dxTextBox({ value: 'Peter', }).dxValidator({ validationRules: [{ type: 'required', message: 'Name is required', }, { type: 'pattern', pattern: /^[^0-9]+$/, message: 'Do not use digits in the Name.', }, { type: 'stringLength', min: 2, message: 'Name must have at least 2 symbols', }], }); $('#date-validation').dxDateBox({ invalidDateMessage: 'The date must have the following format: MM/dd/yyyy', }).dxValidator({ validationRules: [{ type: 'required', message: 'Date of birth is required', }, { type: 'range', max: maxDate, message: 'You must be at least 21 years old', }], }); $('#country-validation').dxSelectBox({ dataSource: countries, }).dxValidator({ validationRules: [{ type: 'required', message: 'Country is required', }], }); $('#city-validation').dxTextBox({ }) .dxValidator({ validationRules: [{ type: 'required', message: 'City is required', }, { type: 'pattern', pattern: '^[^0-9]+$', message: 'Do not use digits in the City name.', }, { type: 'stringLength', min: 2, message: 'City must have at least 2 symbols', }], }); $('#address-validation').dxTextBox({ }) .dxValidator({ validationRules: [{ type: 'required', message: 'Address is required', }], }); $('#phone-validation').dxTextBox({ mask: '+1 (X00) 000-0000', maskRules: { X: /[02-9]/, }, maskInvalidMessage: 'The phone must have a correct USA phone format', }).dxValidator({ validationRules: [{ type: 'pattern', pattern: /^[02-9]\d{9}$/, message: 'The phone must have a correct USA phone format', }], }); $('#check').dxCheckBox({ value: false, text: 'I agree to the Terms and Conditions', }).dxValidator({ validationRules: [{ type: 'compare', comparisonTarget() { return true; }, message: 'You must agree to the Terms and Conditions', }], }); $('#form').on('submit', (e) => { DevExpress.ui.notify({ message: 'You have submitted the form', position: { my: 'center top', at: 'center top', }, }, 'success', 3000); e.preventDefault(); }); $('#button').dxButton({ text: 'Register', type: 'success', useSubmitBehavior: true, }); });
<!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/22.1.6/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/22.1.6/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/22.1.6/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"> <form id="form" action="your-action"> <div class="dx-fieldset"> <div class="dx-fieldset-header">Credentials</div> <div class="dx-field"> <div class="dx-field-label">Email</div> <div class="dx-field-value"> <div id="email-validation"></div> </div> </div> <div class="dx-field"> <div class="dx-field-label">Password</div> <div class="dx-field-value"> <div id="password-validation"></div> </div> </div> <div class="dx-field"> <div class="dx-field-label">Confirm Password</div> <div class="dx-field-value"> <div id="confirm-password-validation"></div> </div> </div> </div> <div class="dx-fieldset"> <div class="dx-fieldset-header">Personal Data</div> <div class="dx-field"> <div class="dx-field-label">Name</div> <div class="dx-field-value"> <div id="name-validation"></div> </div> </div> <div class="dx-field"> <div class="dx-field-label">Date of birth</div> <div class="dx-field-value"> <div id="date-validation"></div> </div> </div> </div> <div class="dx-fieldset"> <div class="dx-fieldset-header">Billing address</div> <div class="dx-field"> <div class="dx-field-label">Country</div> <div class="dx-field-value"> <div id="country-validation"></div> </div> </div> <div class="dx-field"> <div class="dx-field-label">City</div> <div class="dx-field-value"> <div id="city-validation"></div> </div> </div> <div class="dx-field"> <div class="dx-field-label">Address</div> <div class="dx-field-value"> <div id="address-validation"></div> </div> </div> <div class="dx-field"> <div class="dx-field-label">Phone <i>(optional)</i></div> <div class="dx-field-value"> <div id="phone-validation"></div> </div> </div> <div id="check"></div> </div> <div class="dx-fieldset"> <div id="summary"></div> <div id="button"></div> </div> </form> </div> </body> </html>
#summary { padding-left: 10px; margin-top: 20px; margin-bottom: 10px; } #button { display: block; }
const countries = ['Afghanistan', 'Albania', 'Algeria', 'Andorra', 'Angola', 'Antigua and Barbuda', 'Argentina', 'Armenia', 'Australia', 'Austria', 'Azerbaijan', 'The Bahamas', 'Bahrain', 'Bangladesh', 'Barbados', 'Belarus', 'Belgium', 'Belize', 'Benin', 'Bhutan', 'Bolivia', 'Bosnia and Herzegovina', 'Botswana', 'Brazil', 'Brunei', 'Bulgaria', 'Burkina Faso', 'Burma', 'Burundi', 'Cambodia', 'Cameroon', 'Canada', 'Cape Verde', 'Central African Republic', 'Chad', 'Chile', 'China', 'Colombia', 'Comoros', 'Democratic Republic of the Congo', 'Republic of the Congo', 'Costa Rica', 'Ivory Coast', 'Croatia', 'Cuba', 'Cyprus', 'Czech Republic', 'Denmark', 'Djibouti', 'Dominica', 'Dominican Republic', 'East Timor', 'Ecuador', 'Egypt', 'El Salvador', 'Equatorial Guinea', 'Eritrea', 'Estonia', 'Ethiopia', 'Fiji', 'Finland', 'France', 'Gabon', 'The Gambia', 'Georgia', 'Germany', 'Ghana', 'Greece', 'Grenada', 'Guatemala', 'Guinea', 'Guinea-Bissau', 'Guyana', 'Haiti', 'Honduras', 'Hungary', 'Iceland', 'India', 'Indonesia', 'Iran', 'Iraq', 'Republic of Ireland', 'Israel', 'Italy', 'Jamaica', 'Japan', 'Jordan', 'Kazakhstan', 'Kenya', 'Kiribati', 'North Korea', 'South Korea', 'Kuwait', 'Kyrgyzstan', 'Laos', 'Latvia', 'Lebanon', 'Lesotho', 'Liberia', 'Libya', 'Liechtenstein', 'Lithuania', 'Luxembourg', 'Republic of Macedonia', 'Madagascar', 'Malawi', 'Malaysia', 'Maldives', 'Mali', 'Malta', 'Marshall Islands', 'Mauritania', 'Mauritius', 'Mexico', 'Federated States of Micronesia', 'Moldova', 'Monaco', 'Mongolia', 'Montenegro', 'Morocco', 'Mozambique', 'Namibia', 'Nauru', 'Nepal', 'Kingdom of the Netherlands', 'New Zealand', 'Nicaragua', 'Niger', 'Nigeria', 'Norway', 'Oman', 'Pakistan', 'Palau', 'State of Palestine', 'Panama', 'Papua New Guinea', 'Paraguay', 'Peru', 'Philippines', 'Poland', 'Portugal', 'Qatar', 'Romania', 'Russia', 'Rwanda', 'Saint Kitts and Nevis', 'Saint Lucia', 'Saint Vincent and the Grenadines', 'Samoa', 'San Marino', 'São Tomé and Príncipe', 'Saudi Arabia', 'Senegal', 'Serbia', 'Seychelles', 'Sierra Leone', 'Singapore', 'Slovakia', 'Slovenia', 'Solomon Islands', 'Somalia', 'South Africa', 'South Sudan', 'Spain', 'Sri Lanka', 'Sudan', 'Suriname', 'Swaziland', 'Sweden', 'Switzerland', 'Syria', 'Tajikistan', 'Tanzania', 'Thailand', 'Togo', 'Tonga', 'Trinidad and Tobago', 'Tunisia', 'Turkey', 'Turkmenistan', 'Tuvalu', 'Uganda', 'Ukraine', 'United Arab Emirates', 'United Kingdom', 'United States', 'Uruguay', 'Uzbekistan', 'Vanuatu', 'Vatican City', 'Venezuela', 'Vietnam', 'Yemen', 'Zambia', 'Zimbabwe'];