As I was thinking about the swap() function that jQuery uses internally, I thought some people may also find a backup() function and restore() function useful. For instance, you may get tired of worrying about using the var keyword inside of a function in order to prevent the variable from Read more…
When looking for examples of generator function definitions, one of the foremost that you will find is one for generating the fibonacci sequence. One of the great things about the upcoming version of JavaScript is the fact that it will allow generator functions to be defined. The following is the Read more…
One of the things that I have noticed about bitwise operations in JavaScript is that it can be convenient for smaller values, but doesn’t always work for larger values. The reason this is the case is because bitwise operators will only work fully for operands which can be fully expressed Read more…
Let’s say that we have a table of grades that students received during a school year. The columns are as follows: student_id quarter1 quarter2 quarter3 quarter4 If you had to display the highest grade that a student received for a quarter, how would you go about selecting the data? Your Read more…
Now Available in YourJS For those of you who don’t know too much about regular expressions or just want to be able to replace every occurrence of a substring with something else, perhaps this definition for the replaceAll() function of all instances of String object will prove beneficial: Yep, that’s Read more…
A few weeks ago, while analyzing some of the CSS code for jQuery, I noticed a call to the swap() function. After looking through the definition of the function and reading the reason for using it in the documentation, I realized that this function might be pretty useful for others. Read more…
One of the newer functions that was added as of the 5th edition of ECMA-262 is Date.now(). This function returns the number of milliseconds that have passed since January 1, 1970 at midnight GMT time (UTC). If you desire to write code that uses this newer function, in order to Read more…
Purpose of the valueOf() Function Let me start off by explaining the commonly misunderstood valueOf() function. The purpose of this function is to return a primitive which represents the specified object. Why is this necessary? Let’s use the following code to illustrate why: If you were to execute this code, Read more…
Unfortunately, after googling for a while, I was unable to find a COALESCE function or something similar that natively exists within Excel. Therefore, I decided to write a quick-and-dirty formula that would approximate it. I used the following array formula to pull the first non-blank value from cells C2 to Read more…
One of the nice things about JavaScript is its functional nature. This is especially nice when it comes to dealing with strings and regular expressions. For instance, in JavaScript, you can use the following code to capitalize every other letter in a string: Cool stuff, right? Wouldn’t it be nice Read more…