Image() object in JavaScript and pass it the URL of the image you want preloaded. ... Loading multiple images with arrays. In practice, you will probably need to preload more than ...

The Array Object in JavaScript has a built-in reduce method that iterates over each value in an array and returns a value. It is very useful when calculating sums. Write a function that takes an array ...

Microsoft is opening up Excel to developers with a new JavaScript API. It will let developers use custom data types like images, cards, and arrays.

Use popular 'grammar of data' syntax to filter and subset your two-dimensional JavaScript arrays and more. Here's how to use Arquero for data wrangling in Observable JavaScript and Node.js.

Exercise Repo: JavaScript Objects and Arrays Open your command line and navigate to your repos directory (if you do not have a repos folder, then you can use mkdir repos to create one) Use this ...