Javascript validating username and password with database

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When user gives space in username field, it will be taken as not null.

So we have to avoid this issue by using trim function.

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In this document, we have discussed Java Script Form Validation using a sample registration form.

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javascript validating username and password with database-54

Validation for login page is very important, because we can validate the user input using client side languages like jquery, javascript.Proper validation of form data is important to protect your form from hackers and spammers!The HTML form we will be working at in these chapters, contains various input fields: required and optional text fields, radio buttons, and a submit button: The validation rules for the form above are as follows: This code adds a script tag and an alert command.You will understand the login application how it actually works in the real time here.This PHP login application uses database to store user information and all the input parameters are validated with javascript.

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