Validating user input with javascript

Posted by / 06-Mar-2016 03:02

Validating user input with javascript

Plus, learn how to email form data and save it in a My SQL database so that it's ready for other applications.Many developers may face a big problem while dealing with Java Script; it’s the problem of validating user input using REGULAR EXPRESSIONS Here are simple steps to do so: -First what is a regular expression?!If you need to require users to enter data in a well-defined format, such as a telephone number or a part number, you can accomplish this quickly and with minimal code by using the Masked Text Box control.

In this article I will present a brief tutorial on the basics of regular expressions and then give some examples of how they can be used to simplify data validation.

For example, you need to define a list of the properties/attributes that you will allow the user to provide CSS rules for.

Then you need to define the range of acceptable values for each property. red), Hex (short and long form eg #fff or #ffffff) and RGB.

Instead of as this lets the browser (and the user) know that the contents of that field need to be secured.

The password won't appear on the screen as you type and most browsers also won't 'remember' the values entered in fields as they do with other form elements.

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In some cases, such as on mobile devices, displaying the password may improve usability without compromising security.