In this tutorial we will be creating a game. A game is a great way to illustrate object oriented programming (OOP). Object oriented programming, as the name suggests, is a style of programming where you model your code after objects, and a game is full of objects. We will have a player, enemies, and bullets. …
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Break and continue are two keywords you can use in loops. Break will “break” you out of the loop, i.e. you will stop iterating through the loop. Continue on the other hand will skip the rest of the loop and continue with the next iteration. In this post we will look at how we can …
Many tend to write JavaScript as a series of statements and functions. It does not have to be that way. JavaScript allows you to create classes that can be instantiated and perform actions, much like how you can in other languages. In this post we will look at how we can use classes in JavaScript …
Finding the average of all the numbers in an array using JavaScript is quite easy. We will look at how we can do it using plain JavaScript and also how to to find the average using jQuery. The syntax for looping over an array is a little different so it is worth taking a look …
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There are a number of string manipulation tasks you can do with JavaScript, and one of them is to remove a comma from a string. You can even remove all of them if that is what you want. TL;DR: (There are more options later in the post) var purpose = “I, Just, want, a, quick, …
tl;dr: Method 1: var valueForKey = “apple” in fruitPrices; The example above will store true in the variable valueForKey if the key “apple” exists in the object “fruitPrices” Method 2: var valueForKey = fruitPrices[“apple”]; In method two we will store the value of the key “apple” in the object valueForKey. You can use either of …
Check If an Object Contains a Key using Javascript Read More »
What is RAM? There are typically two types of memory on a computer. There is long term memory, such as a hard drive or SSD, and then there is RAM. RAM stands for Random Access Memory and the computer can use it to quickly look up information that it needs. It is much quicker than …
When a machine wants to run a piece of software it first has to load it into memory. Code that can run regardless of where it is loaded is called position independent code, while code that has to be loaded at a certain location is called position dependent code. It used to be that all …
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When creating a piece of software you will most often end up with more than one file. The concept of linking deals with how those files are put together to create the final output file that can run on a machine. There are two ways to create the final output, and that is to compact …
Cross compiling is compiling a program on one computer and then being able to run the output files on a different machine with a different architecture. The computer that is used for compilation is called the host, and the computer where the code should run is called the target. If the host and the target …