# 
#  Overview
In #key# HTML:Hypertext Markup Language #key#, the **`pattern` attribute** is used to specify the regular expression on which we check the `pattern` of input values.  This attribute works with the `<input>` elements. 

We use this attribute with the following input types: text, email, date, password, etc.



# 
#  Syntax

---
```html
<input pattern = "regular_expression">
```
---

##
## Parameters

This attribute takes `regular_expression` as its single argument.





##
## Example



<form action="/action_page.php">
Password: <input type="password" name="pass" pattern=".{6,}" title="Password must be 6 or more characters long.">
<input type="submit">
</form>

codemirror

# 
## Explanation
In the above example, we set the `pattern` of password type to accept a minimum of `6` characters. So, if we add fewer characters, it shows a warning message.

What is the pattern attribute HTML?

Specifies regex for validating input values in <input> elements like text, email, date, and password.