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jQuery Form Validation Without Plugin

Last Updated : Jul 1, 2023

jQuery Form Validation Without Plugin

In this article we will show you the solution of jQuery form validation without plugin, Form validation is the act of verifying the data entered into a form to make sure it complies with particular criteria while submitting it to a server.

Form validation is a common JavaScript library in use for client-side scripting.

Form validation can be done with jQuery without the requirement of another plugin. With the.submit() method, you can add an event listener to a form's "submit" event to carry out form validation.

You may utilize jQuery selectors inside the event listener function to choose the form inputs or validate the values of those inputs using different techniques, like.val() and. length.

Verifying the data that a user enters into such an input field is known as form validation. Using jQuery, we will validate a simple form with a username, password, and confirm password.

Prerequisites: You must understand the fundamentals of HTML, CSS, and JavaScript, but instead jQuery.

Approach:

To begin, make an index.html file with an HTML form containing data input for username, email, password, and verify password.

Bootstrap 4 will be used to implement form controls. Just below the body> tag, add the "app.js" file, which contains the jQuery code for part validation.

Start creating an app.js file with the code provided below that validates the entire form.

All error messages are hidden within the app. When the document is finished, save the js file. Verify all of the fields you are entering, including the username,email,password,and confirmation password.

jQuery is a JavaScript library that is fast,lightweight,small, and feature-rich.

The script> tag can be used to include jQuery in the form.

src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.0/jquery.min.js" script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3. </script>

Step By Step Guide On jQuery Form Validation Without Plugin :-

<html>
<body>
<h2>Validation of a form</h2>
<form id="form" method="post" action="">
First name:<br>
<input type="text" name="firstname" value="john">
<br>
Last name:<br>
<input type="text" name="lastname" value="Doe">
<br>
Email:<br>
<input type="email" name="u_email" value="johndoe@gmail.com">
<br>
<br><br>
<input type="submit" value="Submit">
</form>
</body>
</html>
  1. Our first step is to write <HTML>, which tells the browser what version of HTML we're using. HTML documents contain tags as their first element.
  2. The <body> tag follows, which describes the content of the webpage.
  3. Then we create a form using input type text and under the form we create firstname, last name, and email.
  4. Then we create a submit button.
  5. Then we close form using </form>
  6. Our program was then closed using </body></html>

Conclusion :-

Form validation is the process of validating or checking whether all of the values are correctly filled in.

A form should always be validated before being submitted. Earlier file validations have been carried out on the server, consuming server processor cycles & lengthening the users' wait times.

They wait patiently for confirmation that the information entered into to the form is accurate. Client-side form validation, therefore, makes sure that only accurate data is transmitted to the web server.

I hope this article on jQuery form validation without plugin helps you and the steps and method mentioned above are easy to follow and implement.

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Experienced Computer Programmer with a broad range of experience in technology. Strengths in application development and Object Oriented architecture design, front end programming, usability and multimedia technology. Expert in coding languages such as C, C++ Java, JavaScript, PHP and more.

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