Is it really necessary to validate the code?

It’s the mania of those who tend to perfection and write the code with almost a maniacal accuracy,  to see the green  check mark that indicates that the code of the web page newly developed passed the validation control. But what does validating a code mean? And why is convenient validate the code? And yet, is it always necessary to pass the validation or there can be some exceptions?

First things first, in this article we’ll try to answer to all the interrogatives posted and with which many developers find themselves facing everyday.

What does writing a valid or standard code mean?

Let’s starting saying what is meant for “writing a valid or standard code“.

A bit of history

There’s an international no-profit organization, composed of a group of experts that have been working years on standardizing the languages and technologies for the web. Such organization is called  World Wide Web Consortium (or W3C).

The web standards

The W3C in the course of the years has established the standards that have the task to define the syntax and the markers (tag) to use in the creation of  any kind of web document. Therefore following these standards  web contents are more usable to all the users regardless the type of browser used and in some cases (if even the accessibility guidelines are respected) also by the interpreter in use (for example, normal browsers, browsers based on devices of vocal syntax, mobile phones, personal computers for auto, etc.)

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