Checking if a property is undefined in JavaScript is easy, but has some nuances. Here's what you need to know 👉

Mongoose doesn't have a `deleteById()` function, but here's how you can delete an object by its _id 👉

Here's how you can compare 2 arrays of numbers in vanilla JavaScript.

Need to remove the last character from a string in JavaScript? Here's 3 ways 👉

Mongoose models have an `deleteMany()` function that allows deleting all documents that match a filter. Here's what you need to know.

Mongoose models have an `updateMany()` function that allows updating all documents that match a filter. Here's what you need to know.

All about Webpack's `definePlugin()` function: how it works, and when to use it.

Here's what you need to know about router-view in Vue Router.

JavaScript's `Promise.allSettled()` function is like `Promise.all()`, but with a few key differences. Here's what you need to know.

Need to sort an array of JavaScript dates, or an array of JavaScript objects by a date property? Here's how 👉

By default, Mongoose's `findOneAndUpdate()` function returns the document as it was before the update was applied. Here's how you can change that 👉

Here's what you need to know about `findOneAndUpdate()` in Mongoose.

Need to run a query in Mongoose using query string parameters? Here's what you need to know 👉

Need to trim leading or trailing characters from a string in JavaScript? Here's how 👉

Here's how you can compare whether two JavaScript dates are on the same day, ignoring time.

JavaScript doesn't support enum as a built-in type, but here's how you can use `map()` with userland enum objects.

JavaScript doesn't support enums, but here's how you can print out an enum object's properties.

Need to reverse a string in JavaScript? Here's 3 different ways to reverse strings.

Here's how you can convert a string to uppercase in JavaScript.

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