One of the things that I often end up doing is using JavaScript’s replace function with a regular expression and a callback function. Recently, though, I have been thinking about redeveloping an HTML application (HTA) that I made a long time ago for PCs. This HTA gave me the ability Read more…
I use to always work on Windows and at times it seemed that certain files just didn’t want to go to the recycling bin. For that reason I would always write a JScript which had the following code: When a file was dragged onto that script, the file would be Read more…
Well before I had this site, I created a program which needed to order file names such as the following: Unfortunately, if you just use the normal {Array}.sort() without a callback function, the following will be the resulting order of the file names: As you can see, the 15th episode Read more…
So, after doing even more research on providing prototypal functions access to private data, I came across this article on the Safe Factory Pattern. It is actually similar to my Accessor Verification pattern that I recommended here on Monday. The quick summary is that by shortening this a bit, you Read more…
A while back many people responded to this post, helping me see that my solution for providing private data access to prototypal functions was incomplete. Since then, I had been playing around with some possible solutions in my head and finally came up with two: Prototypal Registry Accessor Verification Prototypal Read more…
As two people indicated in their comments in the original POW post, the answer is NaN. You can even do the following to check it: Weird stuff, right?!?!?!
Assuming a normal JavaScript engine, what could you possibly pass into the following mystery() function that would not thrown an error? As is normal, this answer will be shown a week from when it was posted and will be linked to from here.The answer to this POW can now be Read more…
Iterating through the key-value pairs of an object that one has created is a task often executed. In view of this, I wrote the following code as a quick and easy way to iterate through all of the keys using a callback function: The JSDoc pretty much explains it all Read more…
One of the nice things that many people don’t know about JavaScript String replace() function is the fact that the second parameter can either be a string or a callback function. This callback function receives the entire matched substring, each parenthesized group (if not found the empty string is passed), Read more…
If you create a regular expression and set its global flag to true, it is important to note that if you want to test multiple strings against that RegExp using the test() function you will most-likely want to zero out the regular expression’s lastIndex property. Take the following code for Read more…