Javascript for validating registration form Fex videochat

When you are asking a reader for their email address, you can use a simple » address validation function to make sure the address has a valid structure. Each option in a drop-down box is indexed in the array Annoyingly, there is no simple way to check which radio button out of a group is selected — you have to check through each element, linked with Boolean AND operators .

javascript for validating registration form-15

In our example, we have a login form with two input fields i.e.

username and password, As user clicks on login button, Java Script validation function comes into act.

family=Open Sans"); /* Color settings */ $form Bg: #2c3e50; $form Color: #fff; $input Bg: #fff; $input Color: #000; $button Bg: #e67e22; $button Color: #fff; $error Msg Color: #ff0000; /* Styles */ * body .container form That’s it, you’re done!

Now you have an idea how to set up form validation with j Query.

Below are the ways to get the value from all types of form elements.

In all cases, the form is called That's checking the value's equality with a null String (two single quotes with nothing between them).

There are two main methods for validating forms: (usually done using Java Script).

Server-side validation is more secure but often more tricky to code, whereas client-side (Java Script) validation is easier to do and quicker too (the browser doesn't have to connect to the server to validate the form, so the user finds out instantly if they've missed out that required field! In this tutorial we'll build a simple form with client-side Java Script validation.

The CGI script is still more reliable, as it always works regardless of whether Java Script is enabled on the client-side or not; but having this extra safety barrier is a nice thing to have in place.

It makes your page much more user-friendly, and takes out the frustration of having to fill out the same form repeatedly.

The basic principle of this plugin is to specify validation rules and error messages for HTML elements in Java Script.

Tags: , ,