The HTML pattern attribute - regular expressions on input fields
Make money for being or staying online/internet.

You will get a $5 starting gift when you join using this link:: GET THE OFFER NOW!!

In this post we take a look at the new "pattern" attribute in HTML which allows you to add custom validation to your input fields through the form of a regular expression pattern.

So for beginners to set the record straight it is possible to validate form input fields using html.The most common attribute that you may be familiar with is the required attribute.

So what does required attribute do?

The required attribute makes the input field compulsory,so the user can't submit form data without filling the input field required.

Common Attribute Usage



<input type="text" placeholder="username" required>


HTML "pattern" attribute

In our example below we are validating the username input field.Here we check if the Username is between 5 to 10 in length.



<input type="text" pattern="[A-Za-z\d]{5,10}" title="Username should be between 5 to 10 in length and contain atleast a number" required>

<input type="submit">


Example Explained

Let's look at each part in this pattern attribute pattern="[A-Za-z\d]{5,10}"

A-Za-z - This indicates that both Uppercase and Lowercase letters are allowed.

\d - This indicates that the username should atleast contain a nubmber.

{5,10} - This specifies the minimum - maximum length of the username.It is user defined so you can set your own limit.

Save up to 80% with this Domain & Shared Hosting package deal! 80% OFF - GET OFFER NOW

Related Post(s)

» How to Create a Nav Bar | HTML & CSS Tutorial | Source Code

» The HTML pattern attribute - regular expressions on input fields

» Learning Basic HTML

collections_bookmark Category :: Html
date_range Published :: 3 years ago At: 03:23 AM
event_note Detailed Date :: Jan 10th, 2019
person Writer :: Code
10 months ago

A JavaScript library for formatting and manipulating numbers - Numeral.js

Check out this lightweight JavaScript library used for formatting and manipulating numbers.

11 months ago

All Countries Drop Down List | HTML Select Country Name

This simple country dropdown list is freely available for you to copy and use in your project forms.

11 months ago

HTML Entities Code Alphabet Discovery Using JavaScript

In this post I will show how writing just a few lines in JavaScript will allow you to render, browse and discover the alphabetical letters using a set of HTML entity codes.

11 months ago


Download YTS YIFY movies using this simple project I created using their API.

11 months ago

Display Random Advice On Your Website or Web App Using Advice Slip JSON API

Here is a short project to display the use of APIs. I decided to work with an advice API because it seemed like a fun one that I haven't worked on before.

1 year ago

How do I get a YouTube video thumbnail from YouTube using PHP

Have you ever been on youtube and admired a thumbnail of a video?

1 year ago

How to recreate Facebook's console warning

When I was inspecting some code on Facebook. I came across this interesting feature. A simple styled console warning message from Facebook to its dear users(products).

1 year ago

How To Create A Stacked Gallery Using HTML And CSS Source Code

In this post I provide you with the source code for the youtube tutorial I made on how to create a Stacked image gallery Using HTML and CSS.