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HTML5 Form Validation - Paulund
Since HTML5 came into webpages it brought a bunch of new features, the most useful features it brings is the functionality that you would normally use JavaScript for. An very good example of how HTML5 can help us with forms is client side form validation. In the past we would create a form on a page and then setup the JavaScript on the OnSubmit event to then check the values are how we want them t
Client-Side Form Validation with HTML5 — SitePoint
When building web applications, it is important you take security seriously, especially when it has to do with collecting data from users. It is a common maxim in security to trust nobody, hence never trust the user to enter correct or valid form values. For example, in an email form field, instead of entering a valid email address, the user might enter an invalid one or malicious data obviously i
HTML5 Forms: JavaScript and the Constraint Validation API — SitePoint
For the final article in this three-part series about HTML5 web forms we’ll discuss JavaScript integration and the Constraint Validation API. If you’ve not done so already, please read The Markup and CSS articles to ensure you’re familiar with the concepts. HTML5 allows us to implement client-side form validation without any JavaScript coding. However, we need to enhance native validation when imp
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