At some point, filter just calls the callback and passes the current element of the array. So it's a function calling another function, in this case the callback you pass as argument. Here is an example of a similar function: var result = []; for(var i = 0, l = array.length; i < l; i++) {

Feb 4, 2017 · Try the includes function of the array. If the arr1 element isn't included in the args array it returns false and only the elements that returns true are filtered out. // Remove all the values\ var args = Array.from(arguments); // args = [[1,2,3,1,2,3],2,3] var arr1 = args.shift(); // arr1 = [1, 2, 3, 1, 2, 3] // args = [2,3]

Oct 28, 2015 · In that function I want to use the filter() method on the array, but I want to use arguments[i]. As an example: function destroyer(arr) { var test = arr.filter(function(value){ return value != arguments[1]; }); return test; } console.log(destroyer([1, 2, 3, 1, 2, 3], 2, 3));

Sep 3, 2024 · In this article, we will learn how to implement a filter() for Objects in JavaScript. In JavaScript, the filter() method is a built-in function for the array, not for the object. The filter() method outputs all the elements of an array that pass a …

Return an array of all values in ages [] that are 18 or over: The filter() method creates a new array filled with elements that pass a test provided by a function. The filter() method does not execute the function for empty elements. The filter() method does not change the original array.

Mar 13, 2025 · The filter() method of Array instances creates a shallow copy of a portion of a given array, filtered down to just the elements from the given array that pass the test implemented by the provided function.

Jun 18, 2018 · In looking at MDN’s docs for the filter() method, in addition to passing the value of each element, we can pass the index of the element and the array itself. To filter out unique values we could...

Jan 28, 2020 · The filter function works by going through each element of the array and checks if a condition matches, if it matches it returns the element. The parameter in the inner function is each element in the array.

Jun 27, 2012 · .filter (Array.prototype.filter) calls the supplied function with 3 arguments: function(element, index, array) { ... element is the particular array element for the call. index is the current index of the element; array is the array being filtered. You can use any or …

Jul 7, 2019 · The filter() method returns an array containing elements of the parent array that match the set test. A function containing a test is passed as an argument to the filter method.