JavaScript contact form validation in HTML | Example code

What if the visitor filled the wrong info in the contact form, to prevent wrong entry from visitors on the website, that we use JavaScript to validate contact form fields.

A contact form is basically a set of fields (Name, email id, contact number, and question) on the webpage, Where visitors will fill it and click on the send button. That is automatically sent to the website owner’s email id.

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Example of JavaScript contact form validation

In the example we using 4 input fields:

  • Name
  • Phone number
  • Email Address
  • Your messages

It’s validate dynamically, if found any wrong data will highlight with message.

Output:

JavaScript contact form validation HTML

Do comment if you have any code query or suggestion on this topic.

Note: All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version


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