Aug 19

I noticed last week that my emails were not being delivered properly. After taking a look at when the issue started, I realized that it was about the same time I updated my box.

My email was being returned with the reason: 550 Banned rcpt apache@localhost.localdomain. There was also another error 554 5.0.0 Service unavailable. Both of these errors on their own were not to helpful. I asked a friend (the one who sold me the box) to help and he gave me some good advice, but I was unable to resolve the issue and several Google searches didn’t reveal any solution.

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Apr 3

So at work today, I wanted to see if I could create a lame mouse over effect to let feel like they were highlighting a listing. I wanted to pop out the moused over listing on the page by putting a thin border around the moused over div and then change the background. I was able to create the effect with javascript and coldfusion very easily. Because I don’t host this site on a coldfusion server, I will just show the javascript with some rendered HTML.

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Mar 3

I was tasked a few months ago to rotate an image on a site randomly. Ordinarily this would not be an issue but the image was a css background image and I really didn’t have the ambition to rewrite the css and page html to do this. Thankfully my laziness paid off, because I found a solution while looking through some php code for wordpress.

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Feb 5
Form Validation II
icon1 admin | icon2 Tutorial | icon4 02 5th, 2008| icon3No Comments »

Continuing on from the first part of the tutorial, we are going to continue through the list of form elements in the order we setup. Next we work on the email address.

else if(document.getElementById(“email”).value==” ||
(document.getElementById(“email”).value!=” &&
!emailfilter.test(document.getElementById(“email”).value))){
document.getElementById(“error_msg”).childNodes[0].data=
‘Please enter a valid e-mail address.’;
document.getElementById(“error_msg”).style.display = “block”;
document.getElementById(“email”).focus();
return false;
}

Notice how we handle the email value checking first to see if it is empty to trigger an error and then using the logical operator OR (denoted as ||), we then look at another statement. In that statement we use the logical operator AND (denoted as &&) to trigger an error, and if both the email filed is not empty and the emailfilter.test is not valid then we do what is in between the curly brackets again. The contents are the same as what we described in the first statement.

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Jan 30

The more we learn the more fun we have. Take for example the simple process of validating a form. We can save the user a lot of time validating the form on the client side and still do it without those annoying alerts that pop up with a loud DING! It is rather easy with the help of a little javascript.

Now depending on what type of data you are passing to the server with your form, you will often need to also validate your fields data on the server too. This tutorial will only look at the client side validation, leaving server side validation to another tutorial at some other time.

Lets first start with our form. We are going to do a simple form that just asks for name, email address, optional phone number, a select list for subject and text area for message. Oh, I always forget, we need a submit and clear button too. Lets start it all of with our form tag.

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