Security News
Cloudflare Adds Security.txt Setup Wizard
Cloudflare has launched a setup wizard allowing users to easily create and manage a security.txt file for vulnerability disclosure on their websites.
array-filter
Advanced tools
The array-filter npm package provides a simple utility for filtering elements in an array based on a provided callback function. It is a lightweight and straightforward implementation of the Array.prototype.filter method, making it useful for environments where the native method is not available or for those who prefer a minimalistic approach.
Basic Filtering
This feature allows you to filter an array of numbers to only include even numbers. The callback function checks if each number is even.
const filter = require('array-filter');
const numbers = [1, 2, 3, 4, 5];
const evenNumbers = filter(numbers, function(number) {
return number % 2 === 0;
});
console.log(evenNumbers); // [2, 4]
Filtering with Custom Conditions
This feature demonstrates filtering an array of strings to only include words longer than 5 characters. The callback function checks the length of each word.
const filter = require('array-filter');
const words = ['apple', 'banana', 'cherry', 'date'];
const longWords = filter(words, function(word) {
return word.length > 5;
});
console.log(longWords); // ['banana', 'cherry']
Filtering Objects in an Array
This feature shows how to filter an array of objects to only include those where the age property is 30 or above. The callback function checks the age property of each object.
const filter = require('array-filter');
const people = [
{ name: 'Alice', age: 25 },
{ name: 'Bob', age: 30 },
{ name: 'Charlie', age: 35 }
];
const adults = filter(people, function(person) {
return person.age >= 30;
});
console.log(adults); // [{ name: 'Bob', age: 30 }, { name: 'Charlie', age: 35 }]
Lodash is a modern JavaScript utility library delivering modularity, performance, and extras. It provides a wide range of utility functions, including array filtering with the _.filter method. Compared to array-filter, Lodash offers a more comprehensive set of utilities beyond just filtering.
Underscore is a JavaScript library that provides a whole mess of useful functional programming helpers without extending any built-in objects. It includes a filter function similar to array-filter but also offers many other utilities for working with arrays, objects, and functions.
Ramda is a practical functional library for JavaScript programmers. It makes it easy to create functional pipelines and includes a filter function. Ramda emphasizes a functional programming approach, which can be more powerful and flexible compared to the simpler array-filter.
Array#filter
for older browsers.
var filter = require('array-filter');
var array = [1, 2, 3];
console.log(filter(array, function (el, i, arr) {
return false; // I throw it on the ground!
}));
// => []
With npm do
$ npm install array-filter
Then bundle for the browser with browserify.
(MIT)
Copyright (c) 2013 Julian Gruber <julian@juliangruber.com>
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
FAQs
Array#filter for older browsers.
The npm package array-filter receives a total of 947,451 weekly downloads. As such, array-filter popularity was classified as popular.
We found that array-filter demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
Cloudflare has launched a setup wizard allowing users to easily create and manage a security.txt file for vulnerability disclosure on their websites.
Security News
The Socket Research team breaks down a malicious npm package targeting the legitimate DOMPurify library. It uses obfuscated code to hide that it is exfiltrating browser and crypto wallet data.
Security News
ENISA’s 2024 report highlights the EU’s top cybersecurity threats, including rising DDoS attacks, ransomware, supply chain vulnerabilities, and weaponized AI.