HTML5 Javascript

How to validate Form using JavaScript

validate form using javascript

Javascript provide a way to validate form data on the clients’s computer before sending it to the web server. Form validation normally used to occur at the server after the client had entered all necessary data and then pressed the submit button. When you create form’s providing form validation is useful to ensure that your viewer enter valid and complete data. For example, you may want to ensure that someone inserts a valid e-mail address into a text box, or perhaps you want to ensure that someone fill in certain fields. If the data entered by a client was incorrect or was simply missing, the server would have to send all the data back to the client and request that the form be resubmitted with correct information.

validate form using javascript

How to validate Form using JavaScript

The javascript provides you the facility the validate the form on the client side so processing will fast than server side validation. So most of the web developers prefer javascript form validation.

Creating Form using HTML

To get started you need a form and in this step we are going to create a form using HTML. For purpose of this article , paste the following source code into a newpage in text editor.

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Styling The Form using CSS

in this step we going to give style for the Form using CSS.

Validate Form using Javascript

You need a custom form that you can later connect to the form. A function is a piece of code that consists of one or more line of script.  A function can take arguments and can return values.  The validation script in this post returns a boolean value that specifies whether tha data contained in the form is valid.

If you facing any type of problem with this source code then you can Download the Complete source code in zip Formate by clicking the below button Download Now otherwise you can send Comment.

About the author

Deepak

Hi, This is Deepak Raj from Sourcecodesite.com.I am a Web Developer, Blogger, Online Instructor and SEO consultant who has been working online for last 4 years and he is running several successful websites on the internet.

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