JavaScript Object Methods In 90 Seconds
Watch the entire #JavaScriptJanuary series from the beginning!
• #JavaScriptJanuary 2020
In JavaScript there are several methods that can be used to convert objects into arrays. In this video we will cover the Object keys, values, and entries methods. But why would we want to convert an object into an array? There could be many reasons, but one is to make the object iterable. Iterable basically means to loop through.
With an array we have many methods that are not available on objects. Such as .forEach(), .filter(), .map(), .reduce(), and many others.
The first method that we will look at is Object.keys().
If we simply want to get all of the keys then we can use Object.keys() and pass in the object that we want to convert. This will return an array with all of the keys.
Similarly, if we just want to get all of the values, we can use Object.values() and pass in the object that we want to convert. This will return an array with all of the values.
And lastly, if we want to get both the keys and the values we can use Object.entries() and pass in the object that we want to convert. This will return a multidimensional array with both the keys and the values.
By using one of these methods we can now more easily filter or manipulate the data as needed.
I'll be releasing a new video every day in January! Stay tuned..
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