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Form validation in HTML5 / HTML. Form fields are designed to collect information from visitors of a certain page. But despite the best efforts and explanations, getting the correct information from an average user can be difficult. Impatient or careless visitors may miss important fields, only partially fill one or several fields, or simply press the wrong keys. After filling the form this way they click "Send" button. The server program receives a set of data and if data validation is not implemented on the server side, the server program has no idea what to do with it.

A professional web page requires data validation, i.e. a method for detecting errors in the input data, or even better - a way to avoid mistakes in the first place. Over the years, web developers have been doing this using JavaScript procedures of their own design or through professional JavaScript libraries. To be honest, these approaches gave excellent results. How does the HTML5 validation work? How to turn off validation Example: But not these: HTML5 New Input elements.

HTML5 Input elements is one of the basic but most important lesson for learning HTML5. Is HTML5 Input elements is different from earlier html versions ? No, HTML5 Input elements is not different from earlier version but ha added some tags , an HTML5 webpage support every earlier version Input elements. In this tutorial we will be learning about the use of <input> tag elements in HTML5. An <input> tag is used within a <form></form> tag and it refers to an input field where the user fills up data values. HTML5 introduces the following new <input> types: datetime-localemail: for input fields that should contain an e-mail address.color : for input fields with colors, i.e. color picker/ color selectordate : allows the user to select data, i.e. date picker with calendarmonth : allows the user to select a month and year. For example: range: should contain a value from a range of numbers. Demo result: Examples: HTML5 <input> new attributes Now we will learn how to implement attributes.

Placeholder Pattern.