![]() ![]() The rule is quite simple: if it is a valid HTML5 attribute, it can be used directly on the element. You may by now have noticed that some attributes are used directly on the element and some are used within data-dojo-props. The API docs provide a complete listing of dojox/validate helpers. There are also locale-specific packages within dojox/validate. dojox/validate is especially helpful if you don’t feel comfortable with regular expressions. The validator attribute is a link to the validation function for emails. An example usage of dojox/validate with a ValidationTextBox would look like: #Dojo set button text zipThese utility functions can validate email addresses, URLs, phone numbers, zip codes, and much more. The dojox/validate library includes numerous utility functions and regular expressions for validating form element values. Not only is the website field now required but the value of the field must pass the regular expression test provided by the pattern attribute. What if the field requires special validation of the pattern of input? That’s where the HTML5 pattern attribute comes in: A custom error message can be placed within the missingMessage attribute, otherwise a generic message will display. Since required="true" has been added to the widget, an error icon and tooltip (with error message) will display if the user fails to place text into the box. Say we want to require the first field the data-dojo-type of that will will change from dijit/form/TextBox to dijit/form/ValidationTextBox: dijit/form/ValidationTextBoxĪ precursor to the overall validation of a form is deciding which elements are required. Luckily there are only a few key components required for basic form validation. Form Validation with DojoĪs with just about every client-side problem, Dojo’s got a great solution for form validation. Now that the basic form has been widget-ized and themed, we can add basic validation functionality. The HTML5 placeholder attribute within the input elements are parsed by Dijit to provide this functionality cross-browser.You get more control over the display when the widget is disabled.If an invalid value is provided, an error message is provided to the user.You may type values into the FilteringSelect autocomplete is employed.The FilteringSelect widget adds the following functionality to the basic select element: ![]()
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