Using Function.toString to Troubleshoot JavaScript Issues
Sometimes JavaScript bugs can be the most frustrating damn things in the world. That problem is compounded when a JavaScript file is created from multiple files on the server side or you simply aren't familiar with some of the code used in a project (i.e. troubleshooting an issue with a JavaScript framework you aren't familiar with. Sometimes just identifying the code within a function is enough to point you in the correct direction. So to quickly check the code for a given function, I'll type into the console something like:
myProblemFunction.toString();
That would return something like:
function myProblemFunction() {
/* bunch of code here */
some.problem().code;
/* bunch of code here */
}
Awesome. Now that I can get the function code at a glance, I can more easily browse through what could be causing the issue and see what needs to be changed. Usually any hint you can get toward finding where the issue resides is a big help!
![Vibration API]()
Many of the new APIs provided to us by browser vendors are more targeted toward the mobile user than the desktop user. One of those simple APIs the Vibration API. The Vibration API allows developers to direct the device, using JavaScript, to vibrate in...
![Responsive and Infinitely Scalable JS Animations]()
Back in late 2012 it was not easy to find open source projects using requestAnimationFrame() - this is the hook that allows Javascript code to synchronize with a web browser's native paint loop. Animations using this method can run at 60 fps and deliver fantastic...
![Face Detection with jQuery]()
I've always been intrigued by recognition software because I cannot imagine the logic that goes into all of the algorithms. Whether it's voice, face, or other types of detection, people look and sound so different, pictures are shot differently, and from different angles, I...
![RealTime Stock Quotes with MooTools Request.Stocks and YQL]()
It goes without saying but MooTools' inheritance pattern allows for creation of small, simple classes that possess immense power. One example of that power is a class that inherits from Request, Request.JSON, and Request.JSONP: Request.Stocks. Created by Enrique Erne, this great MooTools class acts as...
