Top "Validation" questions

Validation is used to check data to make sure it fits whatever required specifications are set for it.

How to check if a Unix .tar.gz file is a valid file without uncompressing?

I have found the question How to determine if data is valid tar file without a file?, but I was …

gzip validation tar gunzip
Custom date format with jQuery validation plugin

How can I specify a custom date formate to be validated with the Validation Plugin for jQuery?

jquery validation datetime-format
How can I change or remove HTML5 form validation default error messages?

For example I have a textfield. The field is mandatory, only numbers are required and length of value must be 10. …

html validation
AngularJS: How do I manually set input to $valid in controller?

Using the TokenInput plugin and using AngularJS built-in formController validation. Right now I'm trying to check if the field contains …

javascript validation angularjs
Using the HTML5 "required" attribute for a group of checkboxes?

When using the newer browsers that support HTML5 (FireFox 4 for example); and a form field has the attribute required='required'; …

forms html validation checkbox
javascript regex for password containing at least 8 characters, 1 number, 1 upper and 1 lowercase

I am trying to write a regular expression to validate a password which must meet the following criteria: Contain at …

javascript jquery regex validation
Sql script to find invalid email addresses

A data import was done from an access database and there was no validation on the email address field. Does …

sql validation email
How to test valid UUID/GUID?

How to check if variable contains valid UUID/GUID identifier? I'm currently interested only in validating types 1 and 4, but it …

javascript regex validation uuid guid
How to validate an Email in PHP?

How can I validate the input value is a valid email address using php5. Now I am using this code …

php regex validation email-validation
Trying to Validate URL Using JavaScript

I want to validate a URL and display message. Below is my code: $("#pageUrl").keydown(function(){ $(".status").show(); var url = $("#…

javascript jquery validation url