IntroductionJavaScript's Objects are not iterable like arrays or strings, so we can't make use of the Show
An object is, essentially, a map of properties and their values. This key-value pair set is what an object is. We can naturally extract the keys and values individually: Keys are extracted using Using Object.keys() to filter an ObjectThe
For example, suppose we have an object of user scores in various subjects:
We can loop through the object and fetch the keys, which for this example would be the subjects:
After you've generated the keys, you may use
Note: Assume we have an Object, and we want to return only key-value pairs with the word "name" in the keys:
We could filter by making use of the Objects key:
We made use of
We then used the array function
Then, we made use of Note: The Check out our hands-on, practical guide to learning Git, with best-practices, industry-accepted standards, and included cheat sheet. Stop Googling Git commands and actually learn it! We are using And at the end of this - we have a new object, filtered by the keys:
Filter Array of Objects by KeyOftentimes, the objects we're processing are sequenced in an array. Filtering each is as easy as filtering one - we just iterate through the array and apply the same steps:
In the above example, we filtered the Users object to only return objects of the
ConclusionIn this short article - we've taken a look at filtering objects by value, using the Can you filter an array of objects in JavaScript?One can use filter() function in JavaScript to filter the object array based on attributes. The filter() function will return a new array containing all the array elements that pass the given condition. If no elements pass the condition it returns an empty array.
How do you filter an array of objects in JavaScript by property value?To filter an array of objects based on a property:. Call the Array. filter() method on the array.. On each iteration, check if the object's property points to the specific value.. The Array. filter method will return an array with all objects that satisfy the condition.. Can you filter objects in JavaScript?Unfortunately, JavaScript objects don't have a filter() function. But that doesn't mean you can't use filter() to filter objects, you just need to be able to iterate over an object and convert the object into an array using Object. entries() .
How do you filter an array of objects in TypeScript?filter method gets called with each element (object) in the array.. Call the filter() method on the array.. Check if the property on the current object meets the condition.. The returned array will only contain objects that satisfy the condition.. |