DOM element id as global property
An element with an id is automatically added as a global property to the window object. This is an outdated practice but still exists in some old scripts.
javascript 11
React displays 0 when using logical AND (&&)
When using logical AND, React can display 0 in the UI in certain circumstances and this might not be what you expect. It is however the correct behaviour and I was not aware why.
JavaScript Array.prototype.at()
A look at the Javascript Array.prototype.at() method that allows for negative indexing
Throttle and Debounce
The difference between throttle and debounce
Discovering the identity function
A more declarative way to filter undefined values from an array in JavaScript using the identity function