In HTML5 you can do like this:
<form>
<input type="email" placeholder="Enter your email">
<input type="submit" value="Submit">
</form>
And when the user press submit, it automatically shows an error message like:
In HTML5 you can do like this:
<form>
<input type="email" placeholder="Enter your email">
<input type="submit" value="Submit">
</form>
And when the user press submit, it automatically shows an error message like: