Aug 27, 2020 · let arr = [Symbol('foo'), 123]; let filtered = arr.filter(x => typeof(x) == 'symbol'); console.log(filtered);

Sep 3, 2018 · You can construct a regular expression by replacing * s with .* to match any characters, and surround the wildcard string with ^ and $ (to match the beginning and the end): item => new RegExp('^' + str.replace(/\*/g, '.*') + '$').test(item)

filterSelection ("all") function filterSelection (c) { var x, i; x = document.getElementsByClassName("filterDiv"); if (c == "all") c = ""; // Add the "show" class …

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.

Apr 3, 2025 · Symbol is a built-in object whose constructor returns a symbol primitive — also called a Symbol value or just a Symbol — that's guaranteed to be unique.

Aug 9, 2024 · In this tutorial, we’ll explore how to create a filter in JavaScript, using practical examples that you can apply to your projects. Before we dive in, make sure you have a basic understanding...

Learn how to create a filter list with JavaScript. How to use JavaScript to search for items in a list. Try it Yourself » Note: We use href="#" in this demo since we do not have a page to link it to. …

Jun 12, 2012 · My question is how do i make javascript filter the text, assuming it is stored in a variable comment? It should output only the names in the text that are prefixed with @ without the @ symbol. Regards. You use the g (global) flag, a capture group, and a loop calling RegExp#exec, like this: console.log("Found: " + m[1]); Output:

Jan 14, 2021 · Let’s take a look at a simple example: Here, we add filter the array to only include all elements greater than 2: const arr = [1,2,3,4,5]; const newarr = arr.filter(el => el > 2);...