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Articles tagged with #javascript
In this article, we'll look at some weird quirks with JavaScript arrays to learn a little more about how they work under the hood. An array is a collection or list of values. It could hold just strings: const names = ['Luke', 'Leia', 'Han']; Or a mi...
Promise chains You can create a chain of Promises by returning new Promises from a then handler. Here's a simple example that chains 3 promises together: Promise.resolve(1) .then(id => { console.log(`Success: ${id}`); return Promi...
The JSON.stringify and JSON.parse functions are handy for converting objects to JSON strings and back again. However, not all properties of an object are serializable. Functions, regular expressions, and Date objects are all examples of values that c...
There's a Stage 3 proposal to add several array methods including Array.prototype.toReversed, which will create a reversed copy of the array. This will be a welcome addition since Array.prototype.reverse mutates the array, which often is not what we ...
Way back in my Java days, when interviewing candidates, I would often ask the candidate to explain the meaning of the final keyword. Many times I would get an answer along the lines of "It's a constant value" or "It can't be changed once assigned". F...
It's not always needed.
