Html5 Developer

I've started to work on Javascript recently. What I am testing is checking the DoB in valid for… Read more Javascript Date Validation ( Dd/mm/yyyy) & Age Checking

I have this form that has a validation JQuery function, I have a problem with the telephone field, … Read more Regular Expression For Arabic Numbers

I noticed that many websites, even Google and some banking sites, have poorly-written HTML with no … Read more Why Do Some Major Websites Use Invalid Html?

I need to be able to parse the attributes from an MvcHtmlString (the results of an HtmlHelper exten… Read more Parse Attributes From Mvchtmlstring

I'm a complete Javascript beginner and I'm really stuck on my assignment. I have to get the… Read more How Do I Validate A Credit Card Expiry Date With Javascript?

Lets get to the problem as I allow open registration on my website(any one can open registration pa… Read more Can We Match An Exact String Using Html Pattern Attribute Only?

I usually work with PHP so sadly don't have some basic JS principles down. This is all I want … Read more Simple Javascript Checkbox Validation

I have a textarea inside a form. Before the form is submitted, the textarea is validated and checke… Read more Compare Array Of Words To A Textarea Input With Javascript

I would like to know how to write the javascript to alter the style of form elements which are requ… Read more How To Change The Css Style On Required Form Inputs Based On Their Values

My doctype is html5. I am validating this HTML: Solution 1: If you want it all to validate you'… Read more Error: An A Start Tag Seen But An Element Of The Same Type Was Already Open

I working with mvc 5. I am loading data from Database Using ORM and fill a drop down list from the … Read more How To Create Asp.net Mvc Dropdownlist With Required Validation

I want to have the fields in my form be validated after the user clicks out of them. However, I am … Read more Jquery Field Validation Onblur (mvc)

Using input.validity.valid, why does my number input return valid for the value 0. in this scenario… Read more Why Is This Input Valid

The following is based on testing with Chrome 31 TL;DR: How come the code in this fiddle works on a… Read more How Do I Invoke Custom Constraint Validation As Part Of The Native Validation Event Flow?

I have a form with two required input fields: Solution 1: Update 2020-06-21 (ES6): Given that jQue… Read more Html5 Required Attribute One Of Two Fields

I have a form with a several different field types, all of which need to be complete before submiss… Read more Disable Submit Button With Jquery Until All Fields Have Values (input, Radio, Select, Checkbox)

I'm using html5 constraint validation on a few fields on my form, such as: &l Solution 1: … Read more Codebehind Onclick Event Is Not Fired After Firing Jquery Event

Using HTML5 (or less preferably JavaScript) is it possible to limit the maximum length of an input … Read more Limit Html Text Input To A Particular Number Of Bytes?

I have managed to figure out how to 'error' alert if the passwords do not match, but this d… Read more How Do I Validate This Html/javascript Form Onsubmit?

So I read a lot of articles that say that HTML 5 form validation is accessible (things required att… Read more Is Html5 Form Validation Truly Accessible?