Need to throw an alert when enetering special characters in JavaScript

[raagadeepthi]

I need to throw an alert saying "Enetered special characters " alert when i click on submit button in javascript. Need code for this

Please help!!!!!

[raagadeepthi]

i used the below code. But it is not working. Please help as i need to finish it off.

if(validate(document.loginForm))
{
username=document.loginForm.value;
document.loginForm.value=username;
if (username.indexOf("%") != -1) {
alert ("The box has special characters. \nThese are not allowed.\n");
}
passwd=document.loginForm.passwd.value;
document.loginForm.passwd.value=passwd;
document.loginForm.action="login.do";
document.loginForm.submit();
}
}

[Dormilich]

the code snippet does not make much sense
- there’s an unopened code block (closing curly bracket)
- there’s an undefined function (validate())
- there’s no definition of "special character"
- lines 4/8/9 seem unnecessary

[raagadeepthi]

I didn't post entire code. I have a text box called username.
If user is enetering sepecial character like % it should throw an alert.
This is my requirement.

Appreciate your help !!!!!!

[Dormilich]

ok, test #1: do you actually enter this code block?

[raagadeepthi]

Hey iam able to do this.
Thanks for the response...!