WebApr 17, 2015 · function filterByKeys (obj, keys = []) { const filtered = {} keys.forEach (key => { if (obj.hasOwnProperty (key)) { filtered [key] = obj [key] } }) return filtered } const myObject = { a: 1, b: 'bananas', d: null } const result = filterByKeys (myObject, ['a', 'd', 'e']) console.log (result) // {a: 1, d: null} Share Improve this answer WebAug 19, 2024 · JavaScript objects don't have a filter () method, you must first turn the object into an array to use array's filter () method . You can use the Object.keys () function to convert the object's keys into an array, and accumulate the filtered keys into a new object using the reduce () function as shown below.

How to Filter an Object by Key and Value in JavaScript

WebAug 23, 2024 · 6. Array#filter is expecting a boolean value as return value, you might use this. let myKeys = Object.keys (data).filter (key => key == vm.system_id); for getting the keys and then render a new object with the given keys. To get all items in a single array, you could collect them with. WebUse var myKeys = Object.keys(myObject) to get the keys. Check if a myString exist in the array myKeys using native. var matchingKey = myKeys.indexOf(myString) !== -1 … knollcrest village chester ny

JavaScript Filter Object By Key Value - TalkersCode.com

The Object.keys() method is used to generate an array whose elements are strings containing the names (keys) of an object's properties. The object is passed as an argument to Object.keys(): For example, suppose we have an object of user scores in various subjects: We can loop through the object and fetch the … See more JavaScript's Objects are not iterable like arrays or strings, so we can't make use of the filter() method directly on an Object. filter()allows us to iterate through an array and returns only the … See more Oftentimes, 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 … See more In this short article - we've taken a look at filtering objects by value, using the Object.keys() method, filtered via the filter()method. See more Web1. filter () method: The filter () method creates a new array with all elements, we can pass the test implemented by the provided function. It returns a boolean value (either true or false). For each element in the array, the function is called with the element as an argument. If it returns true, the element is included in the new array. red flag watch