Html code for validating name
So if an older browser doesn't support them, the fact that they're in the HTML won't 'break' anything, they’ll just be rendered as an NB While client-side form validation is great for enhancing user experience—fast, instant feedback to the user without making a round trip to the server—you will still need to validate any data submitted on the server, too.Let's walk through an example of how we can validate a form using only the browser's built in validation.Now we will see how we can validate our entered form data before submitting it to the web server.The following example shows how to validate an entered email address.After making all these changes our HTML now looks like this: https://jsfiddle.net/ianoxley/9C2JD/ The good news is that HTML form validation is supported by all the latest desktop browsers, and most mobile browsers.The bad news is that it is only partially supported in Safari, and isn't supported at all on i OS Safari, or the default Android browser.
A third approach is to use Java Script to detect whether the browser supports form validation, use it if it does, and fall back to Java Script-based validation if it doesn’t.
Take this simple booking form: attribute for the label tag matches up with the id attribute of the associated input tag.
This keeps our HTML semantic, with the labels helping to give meaning to the input controls.
We can achieve this by adding a pattern attribute to the 'Name' field, setting it's value to the regular expression we want the data to be compared against: The text in the title attribute is then appended to the built-in validation message: Note that some screen reader / browser combinations might lead to the title attribute being read out in addition to the aria-describedby text, so watch out for this e.g.
I found that using NVDA with IE10 caused the title attribute and the aria-describedby element's text to be read out, but using NVDA with Chrome and Firefox didn’t exhibit this behaviour. Later on we’ll revisit this and show you one solution using CSS3.