Html5 Email Validation

HTML5 email input not validating email addresses?

Are you sure you have it in form and sending it with submit or button?

<form>
<input type=email>
<input type=submit>
</form>
  • this must work

edit: if you are using HTML5.. why do you have input ended with />... just > its enough...

!!!! YOUR LAST INPUT MUST BE TYPE="SUBMIT"....

HTML5 Email validation should not allow email without . example aaa@aaa

<input type="email" required pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}$" />

HTML5 Email input pattern attribute

This is a dual problem (as many in the world wide web world).

You need to evaluate if the browser supports html5 (I use Modernizr to do it). In this case if you have a normal form the browser will do the job for you, but if you need ajax/json (as many of everyday case) you need to perform manual verification anyway.

.. so, my suggestion is to use a regular expression to evaluate anytime before submit. The expression I use is the following:

var email = /^[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}$/;

This one is taken from http://www.regular-expressions.info/ . This is a hard world to understand and master, so I suggest you to read this page carefully.

Email Validation with HTML5 Required Attribute plus Regular Expression Pattern

Here is my code where I do not allow yahoo & hotmail. However, e-mail validation is a very delicate thing.

<form>  <div class="field">    <label for="email">Email Corporativo</label>        <input           type="email"           name="email"           id="email"           value=""           pattern="^[^@]+@(?!(yahoo|hotmail))[^@]+\.[a-z]{2,}$"           title="Utilize seu email corporativo"           placeholder=""           required        >  </div>  <input type="submit" value="ENVIAR"></form>

React.js and HTML5 email validation

For a controlled input, ultimately React has to call Element.prototype.setAttribute(), and at least in Chrome 52 (I've yet to test with other browsers) this results in a warning being logged to the console. This warning does not show up with uncontrolled inputs, or with a non-React, vanilla HTML5 form.

Check out DOMPropertyOperations.setValueForProperty() in the React source, specifically line 162 (in v15.3.0) for <input>s.

html5 e-mail validation failed