JavaScript can do the validation checks easily. All you have to do is provide the values you want to validate.
check the following site. http://www.devarticles.com/c/a/JavaScript/Validators-Introducing-Struts-Validator-Framework/1/
Performs a check on all internal components (Leng Heng )
Although this password script would get you hacked in the blink of an eye, you could use <html> <head> <script type="text/javascript"> function PassCheck() { var pass=12345 var check=prompt("Enter Pass",""); if (pass==check) { document.write("Correct!") } else { document.write("Incorrect!") } } </script> </head> <body> <button type="button" onclick="PassCheck()">Enter Password</button> </body> </html>
In JavaScript, validation commands often refer to functions or methods used to check the correctness of input data. Common techniques include using regular expressions with the .test() method to validate formats like email addresses or phone numbers. Additionally, built-in methods like isNaN() check for non-numeric values, while custom functions can be implemented to ensure values meet specific criteria. For form validation, the HTML5 checkValidity() method can also be utilized to assess input fields against defined constraints.
Use the length property of string in javascript.
function uncheck () { form1.chkbx1.checked=false; } form1 is the name/id of the form chkbx1 is the name/id of the checkbox
JavaScript is written within an HTML page (or in an external .js file but technically it's still part of the page) and adds special effects to that page. W3Schools has some really good tutorials. You can find the link in the related links. You can write JavaScript in Notepad! However most people prefer an IDE. I like Komodo Edit, personally. You can find a link for Komodo in the Related Links.
as far as i know they are: <script type="text/javascript"> all my lovely javascript code!!! </script>
Digit Check
Validation rules limit what can go into a field. You might want to only allow values that are over 500 in a field, so the validation would be: >500 You might want dates that are before the 1st of January 2010, so that would be like this: <#01/01/2010#
JavaScript can be useful for turning HTML into something more dynamic and interesting to the user. Also, you can do things like check to see if fields have been filled before a submit function is clicked. Although sometimes JavaScript can be ugly and very un-professional, it still has its uses today.
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <title>basic form validation in javascript</title> <script type="text/javascript"> function validatemyform(myform) { //check if name textbox is not filled, if so return false and dont submit the form if(myform.nametxtbox.value false) {alert('please accept the terms!'); return false;} //if a name has been filled in and the checkbox is checked return true and allow the form to submit else { return true;} } </script> </head> <body> <form name="myform" action=".././mycgi.pl" method="post" onSubmit="return validatemyform(this)"> Enter your Name:<br> <input type="text" name="nametxtbox" size="40" maxlength="256"><br><br> Do You Accept the Terms and Regulations?<br> <input type="checkbox" name="accept_terms_chkbox" value="yes">I Accept<br> <input type="submit" value="Submit"> </form> </body> </html>