One of the things that you often have to learn early on in school after multiplication and division is how to find the GCD (Greatest Common Divisor) of two numbers. It is possible that you know the GCD as the GCF (Greatest Common Factor) or the HCF (Higest Common Factor). Read more…
One of the first things that many people learn in an introduction to Computer Sciences course is the algorithm for calculating the square root of a number. The algorithm, which is often attributed to Heron of Alexandria, is as follows: Formulate a guess. Multiply that guess by itself. If the Read more…
One thing that is not extremely obvious in JavaScript is how you sort arrays. Yes, of course I know that arrays have the native sort() function, but did you know that the following will incorrectly sort the array of numbers: How crazy is that? Even though the array is in Read more…
As of JavaScript 1.8, a new prototypal function for the Date objects has been added: toISOString(). Ordinarily this returns a string similar to the following: The problem is that not all browsers support JavaScript 1.8 yet. For this reason, if you want to use this function regardless of the version Read more…
Now Available in YourJS When dealing with numbers, at times for presentation’s sake, we need to add ordinals to numbers. For example, instead of today is the “September 28”, you may want to say that it is the “28th of September”. I wrote the following code snippet to easily add Read more…
Sometimes you write code that you wish you could totally rework. That is how I feel about jPaq’s Date.prototype.format(). The real issue I have with it is that the metacharacters are not intuitive. Therefore, I decided to write a new version of this function which is more intuitive. The following Read more…
In PHP, there are a few ways in which you can specify a string which, if it contains a variable name, the corresponding value will replace it. This process is referred to as string expansion and is talked about here on PHP.net. Unfortunately, there is no real way to implement Read more…
I am currently working on an updated version of Wormbites. In the process, I wanted to use my typeOf() function that I posted here. The only thing is, I thought it would be even better if the function would optionally take two parameters, in which case it would check to Read more…
Yesterday’s post made me want to extend the Date.prototype object a bit more. Therefore I came up with the following code: The above code defines the following prototypal functions: Date Adders Date.prototype.addYears() Date.prototype.addMonths() Date.prototype.addDays() Date.prototype.addHours() Date.prototype.addMinutes() Date.prototype.addSeconds() Date.prototype.addMilliseconds() Date Differs Date.prototype.diffYears() Date.prototype.diffMonths() Date.prototype.diffDays() Date.prototype.diffHours() Date.prototype.diffMinutes() Date.prototype.diffSeconds() Date.prototype.diffMilliseconds() Unlike the XDate Read more…
A week ago someone asked me how they can format a date so that it returns the MM/DD/YYYY format. The following is a definition for a function that does just that: The following code is an example of how you would use this code: The following is a JSBin page Read more…