complete list of wordpress url rewrite rules
WordPress url rewrite has nothing to do with .htaccess file. WordPress url rewrite is done in wp() in wp-blog-header.php. wp() eventually calls parse_request in class WP, where a set of […]
difference between $_SERVER[‘REQUEST_URI’], $_SERVER[‘PHP_SELF’], and __FILE__
$_SERVER[‘REQUEST_URI’] is what you type in your address bar of your browse(no protocol and host part). $_SERVER[‘PHP_SELF’] is the url of the first file loaded(no protocol and host part) with […]
difference between isset, empty, is_null
First, we should know that isset and empty are php language construct while is_null is a function. So you won’t get an E_NOTICE when passing undefined variable to isset or […]
php require() dies of syntax error
php require() will die if the included file has a syntax error even the error line is not executed(i.e., within a function that is not called) for example: file1.php <?php […]
How to create/use WordPress sidebar?
We should know first what sidebar is in WordPress. A WordPress page is divided into header, sidebar, content, and footer. A WordPress page is displayed according to the page […]
How to write a WordPress Widget?
WordPress widget is good re-usable component for developing WordPress sites. You must have dragged and dropped widgets in wordpress admin panel. If you are a wordpress savvy, you may have […]
Javascript replace method
A few things about js replace method: var anotherstr=str.replace(/<[^<>]+>/g, function(m) { return m.replace( /__i__|%i%/g, n );}); First, str.replace does not change str itself, the result is saved in anotherstr. Second, […]
How do jQuery slideDown and slideUp work?
jQuery slideDown function shows an element from top to bottom in specified time. slideUp function hides an element from bottom to top in specified interval. $(element).slideDown(interval, function(){}); $(element).slideUp(interval, function(){}); […]
What is the event model of jQuery?
I’ve been confused with javascript event model for long time. You must know there are two event models in javascript: capturing model and bubbling model. Every article describing event model […]
How to debug javascript code in WordPress?
You should edit the file: wp-includes/version.php to change $wp_version = ‘3.9.3’ to $wp_version = ‘3.9.3-src’. After doing that, a wordpress site will load development version of javascript files instead of […]