Inject jQuery into a Webpage Through Chrome Javascript Console

include these lines of jQuery instantiation code in the javascript console Exploring the DOM is much easier with jQuery. However, You may be working with a webpage that does not natively have jQuery installed. That’s ok, the following lines of code will solve this. Just include these lines of jQuery instantiation code before you explore […]

Iterate an array with a promise in javascript

Example of how to iterate an array with a promise It can be challenging to figure out how to iterate over an array of items with a promise. The following code takes a callback function that may or may not be a promise already. Once inside the PromiseForEach function, the callback will become a promise […]

[solved] devtool reloads if application writes to a file

If you are developing a node js application using devtool, you may experience a rather frustrating situation whereby you application stops without any traceable errors followed by a subsequent reload of the devtool. Why does devtool keep reloading when there are no errors? There is a likelyhood that you are experiencing this issue as you […]

403 Error after adding a new website directory

On an ubuntu server it is common to host site files in a directory with a structure like ‘/var/www/’. One might wish to separating a subdomain out from site files in another directory. Something like ‘/var/dev/’. How to fix or prevent a 403 error after adding a new site directory To prevent a 403 error, […]


Examples of how to use Secure Copy (scp) scp uses ssh for data file transfer between servers and provides the same level of security as ssh. Secure copy the file “somefile.txt” from a remote host to your local host

  Secure Copy your file “somefile.txt” from the local host to a remote host


PHP What is Opcode Cache and When to Use it

Are you wondering: What is Opcode Cache and When to Use it? I just read an excellent article entitled PHP Performance I: Everything You Need To Know About OpCode Caches published by Engine Yard. The article is a transcript of a video on PHP opcode cache, actually. Engine Yard goes into just enough detail, allowing […]

[SOLVED] ERROR mysqli_real_connect(): (HY000/2002): No such file or directory

If you are getting a wordpress error that starts with “mysqli_real_connect(): (HY000/2002):” and includes “No such file or directory” and ends with “wp-includes/wp-db.php on line 1490”, then here is what resolved the issue for me. In the wp-config.php file, include (or change) this line from define(‘DB_HOST’, ‘localhost’); to define(‘DB_HOST’, ‘’); I put it near the […]

[SOLVED] How to Fix $.ajax() Not Working ie 8, ie 9 and ie 10

  jQuery is an great tool to use for making ajax calls. As usual MS Internet Explorer has to make things that would otherwise be standard — difficult. Setting aside any rants about how much hair one can pull out in the days it takes to accomplish something that should have been easy, here is what […]