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whenever i click on submit button it fires alert('empty username') but goes a head and dire… Read more Prevent Form From Posting Until Javascript Code Is Satisfied

I'm using the jQuery Validation Plugin and want to run my own code when the plugin detects a va… Read more Jquery Form Validation - Success + Showerrors

I have a registration form split into blocks that was working perfectly using this code based on on… Read more Parsley.js Submit Form Not Working When Using Addasyncvalidator And Remote

I cant simply get my head around javascript validations. I've seen tutorials and its just not g… Read more Checkbox Validations

There are many post on this one which i find not helpful and i need to find out why and how . I mad… Read more Knockout Dropdown Validation On Load? Required

I am trying to do validation on a input based on value selected from a dropdown. JSFiddle: https://… Read more Dynamic Validation Using Ng-pattern Angularjs

I am working on an io-ts validation where I would like to validate the list length (it has to be be… Read more How To Validate Array Length With Io-ts?

I have two JS files included in page as utility.js and utility1.js Code for utility.js var HelloW… Read more Finddomnode Of Mounted Component In Reactjs

I am validating a text field to allow only letters and spaces. This is the method I am using: jQuer… Read more Allow Only Letters And Spaces - Jquery Validation Plugin

How to prevent a form from submit if text box is empty? This I have done in JSP successfully using… Read more Alert Message On Submit If Text Box Is Empty Using Php

I have a form for name, company, email, and phone number, and using required it makes sure that the… Read more Get Html5 Validation To Work With Onclick?

I have rendered the normal text with jquery date rule. The date rule working fine in chrome but not… Read more Jquery Date Rule Not Working In Firefox And Ie

i need to validate a field for empty. But it should allow English and the Foreign languages charact… Read more Validate Field For All Language Characters Through Regex

Can any one tell me how can i validate zipcode for US using regular expression. I used below expres… Read more Zipcode Validation For Us

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)

First: I searched a lot and I can't find anyone to have this problem (it seems like it somethin… Read more Enable Javascript Validation For Eclipse

I have reactive form and don't want validation to be triggered until user really visits a field… Read more Don't Validate Untouched Fields In Angular2

I am allowing users to create comments within my app. I have created a javascript regular expressio… Read more Can You Help Me Alter My Regular Expression To Include A Particular Range Of Unicode Characters?

I found myself needing to create a function to validate the input of a JS prompt as an integer. It … Read more Javascript Prompt Validation For Integer Input

I have a login area of my site, and on login I set a session variable $_SESSION['logged_in'… Read more Javascript Form Validation Based On Php Session Variables