For a while many developers, including myself, suggested that Array.prototype.slice() be used to turn any array-like object into an array. Recently, I was alerted to a scenario in which this does not work as expected. Let’s take the following code for example: In most browsers, the above code would take Read more…
The other day I was visiting Grid Style Sheets and was fascinated by the fact that the underlines of the links seemed to expand on mouse over. At first I tried simply using transition in conjunction with margin and padding but unfortunately the results were a bit shaky. Therefore I Read more…
WARNING: Extending native prototypes is frowned upon by many JS engineers but can be helpful as long as the extensions are properly documented in the codebase. SCRIPTER’S DISCRETION IS ADVISED. 😆 Yesterday I added a post about String.prototype.before(...). As is explained within the post, this function can be used to Read more…
WARNING: Extending native prototypes is frowned upon by many JS engineers but can be helpful as long as the extensions are properly documented in the codebase. SCRIPTER’S DISCRETION IS ADVISED. 😆 Even though its NOT encouraged to extend native prototypes, at times you may find that doing so is pretty Read more…
Today, I had to figure out a way to parse an HTML string in Python in order to find all of the attribute values of attributes starting with a specific string. Since we already have BeautifulSoup installed, I started researching how to use a lambda function in conjunction with the Read more…
One of the great things about reading through Douglas Crockford’s site is that you get to learn about how certain things like prototypal inheritance was implemented prior to ECMAScript 5. Since then Object.create() made its way into JavaScript and has been available in most modern browsers for a while. If Read more…
As I mentioned in yesterday’s post, I was recently working on a quick way to parse CSVs into an array of arrays and alternatively into an array of dictionaries keyed on the values in the first row. I ended up landing on the following definition: As you can see the Read more…
A few days ago I was working on a very primitive version of a CSV reader for a quick JS project and while testing my regex out, I noticed that I was getting an extra match at the end. Here is the JavaScript function that I had: Interestingly, if you Read more…
Here are a few helper functions that can help you get on the right track to building a simple chrome app that can read and modify the user’s file system: Get Full Path In order to get the full path for a DirectoryEntry or a FileEntry you can use the Read more…
WARNING: This post is intended solely to educate and is not to by any means encourage that anyone use this method to globally evaluate JavaScript code. Most JavaScripters avoid eval(), especially globalEval() (like what is provided in libraries such as jQuery), as if it were the plague. Its use can Read more…