question about array

hi everyone! need you quickily

i would like to this: in an email part in a form - i would like to make it validate the adress that it should end in .com and nothing after the .com suffix- so if the user will put in the field - it will give him an invalid notification

how can i validate that? how can i express in an array the end of an array? is that array.length

thanx a lot

progfrog

 

For the second question :

<script type="text/javscript">
function validateEmail(elementValue)
	{
	var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.com$/;
	return emailPattern.test(elementValue);
	}
</script>

HTML:

I don't understand what you want in the first question, the last element in the array is generally array.length-1, and to access hem you need to do this :

var a = array("asdf","asdf","asdf");
...
x = a[a.length-1];
alert(x); // x is the last member in the array 

Code (markup):

I'm assuming that the array keys are 0,1,...,n .

 

use regular expressions in JS.
or u can get element of array and use substr() method:

 if(arr[element_number_in_arr].substr(-4) == ".com") { /* do something */ } 

Code (markup):

BUT this will not work in IE!
to compel IE work correct use this

var our_email = arr[element_number_in_arr];
if (our_email.substr(our_email.length-5) == ".com") { /* do something */ }

Code (markup):

i reccomend to u use regular expression for email like this:

/^[a-Z0-9_-\.]+@[a-Z0-9_-\.]+\.com$/

Code (markup):