If you have a PHP script that may take a long time to process (more than a couple minutes), make sure you’re printing output as it gets generated. If the page takes too long to load then some browsers will close the connection if nothing is being sent to it. All you have to do is print out a character to keep the connection open, so if you’re in a loop, trying printing “.” every iteration.
Hope that helps!
I was trying to make a shortcut to hibernate Windows since one of my computers didn’t have that option. Using this was giving me permission denied errors:
powercfg /h on
I even tried to do it from within a ‘Run as Administrator’ console window, no luck. Found the easy solution, just use this instead:
shutdown /h
Hope that helps you!
I used the Codiqa Screen Designer on the JQuery Mobile homepage and while at first I was impressed, I noticed quite a bit of extra padding and spacing. I tried to override the CSS, but the best way to get rid of it was to remove all of the fieldcontain and controlgroup divs that it adds in:
<div data-role=”fieldcontain”><fieldset data-role=”controlgroup”>
If you ever come across a website that renders as though it’s in IE7, even though it’s IE9 or later, try checking the meta tags. It probably has this set:
<meta http-equiv=”X-UA-Compatible” content=”IE=EmulateIE7″>
This tells the browser to render as though it’s Internet Explorer 7 no matter what the version.
If you need to detect whether this is happening programmatically, you can do so with the following attribute:
if(document.documentMode==7) ….
Hope that helps!
We recently tried Google’s Pagespeed Service to see if it was quicker and easier than using a CDN. Quick answer – it didn’t help us too much. But I did encounter a number of weird 404′s when testing it out that I thought I might document.
Before we made any permanent changes we of course wanted to test it out locally. We did so by modifying our proxy settings for the site we were testing. We have several resources on amazon cloudfront, and some of them just weren’t getting loaded properly!
It had to do with using “Proxy Switchy!” to run our test. I had set up a different proxy that I could switch to when I wanted to test so that I could try side-by-side tests easily. But for some reason that wasn’t working. If you follow the recommended settings Google suggests you won’t have this issue. Just modify your main proxy connection instead of creating a separate one to test with.
Hope that helps!
When developing a mobile app, I noticed that one person’s profile picture was showing up rotated sideways. When I visited this on my computer browser, it appeared fine, but when trying with an iPhone it was always to the side!
At first I thought this was a coding problem, but I realized that if I access the image directly through the url it does the same thing! Turns out that some cameras store orientation data with the image. Most desktop browsers don’t care about this, but for some reason mobile browsers do so they read that information and rotate the image the way it was taken.
An easy solution is to remove the EXIF data associated with that image. I did a quick google search and found sites that would strip exif data of any image and allow you to resave it. Doing that fixed it!
Hope that helps!
I recently completed an intro package to flying and I learned a lot about what it takes to become a pilot. I’m documenting the steps along with the money and time needed because I couldn’t find a realistic viewpoint anywhere else.
None of this has to be done within a certain amount of time, although the written FAA exam results are only good for 2 years, so if you take longer than 2 years going through steps 3-8 you’ll have to take it again.
Overall it should take about $10,000 to receive your pilot certificate. I’m told that there are several ways to bring the cost down, such as if you need to travel for work you can write that off, or if you take a group of friends somewhere you can split the cost with them (although you cannot charge people for flights, as you need a commercial license to do that).
For Christmas my girlfriend had given me a certificate good for the intro package at Golden State Flying Club. They’re a small aviation school based out of Gillespie field in El Cajon (San Diego), CA. She got it for under $150 and it included 2 sessions of their classroom training, a manual and a flight log book, and two 1- hour flight lessons. It was an exhilarating experience and I highly recommend it. Here’s my review of how everything went:
Every 3 months they start a “Ground School Training” program. It’s one of the requirements you need to complete as part of becoming a pilot, and they let you sit in on two of these sessions. It’s basically a small classroom at their facility at Gillespie Field, holding probably about 20 people. The instructors are great, very knowledgeable, very passionate about the subject. I’d recommend going towards the start of the series, as if you’re doing an intro package you probably only need to know the basics (basic aerodynamics such as lift, stalls, flaps, turns). They have videos to most of their sessions available for anyone to view online. They book they provide was nothing special. You’ll be alongside other students who are there to get their license, so they have other books and a bit more training than you. They have homework and quizzes, but since you’re just sitting in you don’t have to worry about it.
I was extremely nervous, not knowing what to expect, and realizing how light those tiny Piper Warrior planes are. My instructor (Dave Kraft – great guy) was fun but very professional, made me feel safe the entire time. Here’s a summary of what we did:
This flight was much more enjoyable because I was better prepared for it. If the first flight didn’t make me want to be a pilot, the second one definitely did:
I’m pretty sure they’re losing money by offering all of this for under $150, as individually it’s about $400. My guess is they hope you become hooked and commit to becoming a pilot through them, as that’s where they make their money. I’m not sure I have the time and money to commit to becoming licensed, but this package was WELL worth it and I really hope I inspire you to try it!!!
I was setting up a Facebook Page for a client and noticed that it was taking forever to load the IFrame I had pointing it to. When I visited the IFrame contents without going through Facebook it was really fast, but when through Facebook it took up to 5 seconds before it even started loading the IFrame contents.
I was going to try different apps other than the “Static HTML: IFrame Tabs” but everyone claims that this is the best app for loading an iframe into your facebook page. I accepted this, and decided that perhaps if I couldn’t improvement the performance of it, I could at least let our visitors know that something was loading and to please be patient. I feared that the blank page while it was loading would make users think it was broken.
Here’s the code I came up with:
<img src="https://www.yourserver.com/loading.gif"
width=508 height=381 id='loadingimg'>
<iframe src="https://www.yourserver.com/iframe.php"
frameborder="0" width="520" height="2500" scrolling="no"
id="theiframe" style="visibility:hidden"
onload="document.getElementById('loadingimg').style.display='none';
document.getElementById('theiframe').style.visibility='visible';"></iframe>
Just place this in the setup of your Static HTML contents and it will show a loading image (you’ll have to change the path to an image of your own) while it’s loading the IFrame (also don’t forget to put in the path of your iframe instead).
Hope that helps!
I recently had a project where I had to require that a user scroll down the terms and conditions and privacy policy before they could check that they agree to them. I read everywhere that in order to get the position of how far down the scroll bar is you have to use $(element).scrollTop(). But this kept returning 0 no matter where the scroll handle currently was!
The solution is to use $(element).contents().scrollTop()
var position = $('#myIframe').contents().scrollTop();
That position is actually the number of pixels that are hidden above the top edge in the iframe. To figure out if the scroll bar is all the way at the bottom, you have to use a calculation including the height of the iframe and the height of the iframe contents.
If this equals true, then they have scrolled to the bottom:
$('#myIframe').contents().height()-$('#myIframe').contents().scrollTop()-$('#myIframe').height()==0
Considering I wanted to warn them when they haven’t seen all the contents, this became my final piece of code to prevent them from checking a checkbox until they had scrolled all the way down:
//must scroll to bottom of terms to agree
$('#checkAgree').click( function() {
if($('#terms_iframe').contents().height()-$('#terms_iframe').contents().scrollTop()-$('#terms_iframe').height()>0)
{
alert("Please scroll through the terms and conditions before clicking agree");
return false;
}
});
I’m aware that there are ways to get this without jQuery, feel free to leave it in the comments. Hope that helps!