In JavaScript a NodeList is an array-like list of objects. One thing to remember though is that array methods will not work on a nodelist because it's not an array! In this article, we talk about how to map over a NodeList.
Deleting node_modules on Windows 7 and Windows 10 can be a frustrating experience if you try to do it from Windows Explorer or Command-Line because the file path names tend to get really long.
To write to Amazon S3 from an AWS Lambda function in Node.js, you can use the AWS SDK for JavaScript in Node.js.
Up until recently, if you were building websites you pretty much always used jQuery. jQuery really simplified working with the browser document object model (DOM) and doing really custom animations. In this blog post, we go through how to jQuery with the Lightning Locker Service turned on.
With that being said, here's a collection of ideas on things you can build in vanilla JavaScript without requiring libraries or frameworks. To be able to understand what the frameworks and libraries are doing for us, which is required when debugging hard problems, it's important to understand the concepts.
As you may have noticed, fetch doesn't work in Node.js. The fetch API isn't implemented in Node, so you need to use a package that implements it and then use that.
Arrays are usually used to store a list of elements that need to be accessed by a single variable. I believe that to use JavaScript effectively every developer should be able to use any one of these methods on an array. These methods can save a lot of lines of codes and also allow us to do some pretty awesome function programming!
When trying to invoke any of your lambda functions if you are getting an error that says "lambda is not a function" the problem is likely that the handler is misspelled in the serverless.yml file OR you aren't exporting modules.exports.handler and are instead exporting something else.
Over the years, I've worked on a number of projects where we deal with user or company provided images which are often very large resolutions which take a long time to download on mobile phones or or poor internet connections. This is a simple script that can be used to compress images and avoid potential costs of a service like Kraken.io
As a JavaScript developer, there's occasionally a need to remove duplicates from an array of values. By using our knowledge of advanced data sets we can write a lot less code and take advantage of built in features in JavaScript.
Knex is a JavaScript / Node.js library that is designed to make working with relational databases easier. Knex.js is a SQL query builder. It has the potential to make tdd and database versioning much easier.
Here's a simple gitignore file that I start with most NodeJS projects.
As a programmer, and technology manager I think it's really important to use the right tools and technologies. There are times where I think jQuery is still really valuable but there are a lot of times where I don't think it is valuable.
Although, JavaScript: The Good Parts is nearly ten years old I would argue it’s still a pretty good book to read. Literally,…
It’s no secret that I absolutely love JavaScript and Node.js. For those that don’t know Node.js is a framework that is built…
One of the most important parts of building scaleable systems quickly is to find work that others have done and use it…
JavaScript has forever changed the way that websites are built. Even in it’s early days, it was being used to validate forms…
Fetch is a browser API that allows us to retrieve or submit remote data using the fetch() function. The Fetch API provides a function that returns a promise that lets us do something with the response from the request we sent.
Strict mode became available in ECMAScript 5 to allow us to prevent certain actions from being taken and to allow it to throw better exceptions. Strict mode allows us to write better quality JavaScript.
A palindrome is a word or sentence that's spelled the same way both forward and backwards. Most of the time when doing these challenges during programming interviews you're told to ignore punctuation, case and spacing.