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JavaScript

Ciaran Mckane
Ciaran Mckane
29,438 Points
Posted by Ciaran Mckane
Ciaran Mckane
29,438 Points

Form Validation tutorials

Hi guys , just wondering what the best form validation tutorials is ? I've been working on my form for a website and I'm now looking to validate the input using javascript

MD AFRID UDDIN MONDAL
MD AFRID UDDIN MONDAL
2,877 Points

There are many ways you can do that and "focus & blur" are one of the handy option you can try.

Ciaran Mckane
Ciaran Mckane
29,438 Points
Ciaran Mckane
Ciaran Mckane
29,438 Points

I mean't as far as validating like that the email fields or name,address etc has been entered with correct format data like for required fields

2 Answers

Jason Berteotti
Jason Berteotti
12,352 Points
Jason Berteotti
Jason Berteotti
12,352 Points

The easiest way to do this would be with regular expression... to which there does not seem to be a JavaScript tutorial for. There are Java and Ruby tutorials for it, but there would be some obvious discrepancies.

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions

Benjamin Wegley
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Benjamin Wegley
Front End Web Development Techdegree Student 18,943 Points
Benjamin Wegley
.a{fill-rule:evenodd;}techdegree
Benjamin Wegley
Front End Web Development Techdegree Student 18,943 Points

I wanted to piggy back off of Jason's answer and say that Regular Expressions (or regex) are the easiest way to setup some form validation.

Some searching came up with this tutorial. At first regex will look pretty crazy, but once you get the hang of its patterns you find out how powerful it is!

Here is another guide that I found that specifically works with regex and Javascript.

My recommendation would be to gain a basic understanding of regex, they search for a guide specifically on the type of field data you are trying to validate. This will help to narrow regex down and make it less overwhelming, and also help you get the answers you need faster.

Hope this helps!