This is not quite a code solution but a good to know about the Promise API. It is constantly evolving and I used to have

We spend a lot of time thinking about visualizing data here at the Data Visualization Society, and rightly so; it is a great way to use our one of our most powerful senses (sight!) to make sense of data! However, I’m intrigued by moving past just the visualization of data and into other senses, like sound (TwoTone: a data sonification app and Loud Numbers: a data sonification podcast), touch (dataphys.org: a list of physical visualizations and DayDohViz: play-doh visualizations), and particularly smell!,One thing I love in Python is the range function and I often need it coding in JavaScript. Here is a simple implementation of it that is perfect for for…of loop and whenever you need numbers in a specific range.,Just need some id? No need to install a new library for that unless you need some more complex ID generators like UUID. Check these options which may be enough to get going. You can start from the current time in milliseconds or a specific Integer and increment, or you can generate an ID from alphanumeric characters.,Leanne Wijnsma and Froukje Tan started The Smell of Data project to alert internet users of data leaks on personal devices using smell. I’m excited by this project of adding smell as a way to detect the presence of information. We don’t use our sense of smell as often as our other senses, and this project uniquely harnesses that with a custom scent.,While coding, you will notice that there are some things you stumble upon over and over, and normally they beg for that quick solution. A lot of these things do not even need you to install a library to solve it. These are my top 25 collected over the years.,I find myself using this a lot when working on something with NodeJs to log objects to the console. The JSON.stringify takes a third parameter that must be a number of spaces to indent the line with. The second parameter can be null but you can use it to handle things like function, Set, Map, and Symbol that the JSON.stringify method does not handle or simply ignores.,Amy Cesal is a designer specializing in data visualization. She is a co-founder of the Data Visualization Society and currently serves on the board. Amy is passionate about building style guidelines for data visualization, trying to make everything, including charts, accessible, creating bespoke data visualization and experimenting with the boundaries between data and art. She holds a masters in Information Visualization from MICA.,The Smell of Data recognizes when you visit an unprotected website on an unsecured WiFi network or Hotspot. The Scent dispenser will release a puff of the Smell of Data as a warning signal.,The problem with “typeof” is that if you use it for some primitives and function it works great but for array and objects it becomes hard to know the difference since they are both considered “objects”,If you have a bunch of asynchronous or normal function that returns a promise that you need to execute one after the other, this utility can help a lot. It takes a list of functions or promises and sequentially resolves them using the array reduce method.,JavaScript is not a strongly typed language and to get that your best solution is TypeScript which I recommend but, sometimes all you need is a simple type check which JavaScript allows you to do with the “typeof” keyword.,Now that we have imported the required libraries for this script, we can bring in the historical data for the stock that we want to analyze. To do this, we are going to make a call to Yahoo Finance. In this example, we are doing this with the stock Microsoft.,If you ever need to keep checking for data updates but don’t have WebSocket available in your system, this util lets you do just that. It is great for cases where you upload a file and you want to keep checking if the file is done processing, or you are working with a third-party API like dropbox or uber and you want to keep checking whether the process is complete or the ride has reached the destination.,Amy Cesal is a designer specializing in data visualization. She is a co-founder of the Data Visualization Society and currently serves on the board. Amy is passionate about building style guidelines for data visualization, trying to make everything, including charts, accessible, creating bespoke data visualization and experimenting with the boundaries between data and art. She holds a masters in Information Visualization from MICA.,Sometimes you just need to know if something is empty and depending on what you are checking, you need to use different methods like, checking the length, size, or if it contains any child elements. This util unifies all of that allowing you to check the size of String, Object, Array, Map, and Set.