One of the more difficult problems with writing systems that communicate over the network is managing input and output—that is, the reading and writing of data to and from the network and hard drive. Moving data around takes time, and scheduling it cleverly can make a big difference in how quickly a system responds to the user or to network requests.

In such programs, asynchronous programming is often helpful. It allows the program to send and receive data from and to multiple devices at the same time without complicated thread management and synchronization.

Minify JS and CSS online, or include the minifier in your project for on-the-fly compression.

https://medium.com/ux-seo-sem-and-webdev-bitesized/top-7-css-minifiers-comparison-f90e28ea0e20

Wanting to make use of Ajax is one of the prime reasons for adopting jQuery.

$.get("mydata.txt").then(
                    function (data) {
                     alert(data);
                    },
                    function () {
                     alert("error");
                    })
                   .always(
                    function () {
                     alert("cleanup");
                    });

JavaScript interview questions that will provide you with in-depth knowledge and help you prepare for your interviews.

The example that Crockford gave in his presentation on how to create objects is the way developers should use for creating objects. It does not require the 'class' keyword or the 'prototype' property for defining an object. It also does not require using the 'new' keyword for instantiating a new object.

function createThing(name) {
    function getName() {
        return name;
    }

    return Object.freeze({
        name,
        getName
    });
}

const myThing = createThing('My Thing');

https://youtu.be/XFTOG895C7c?t=2807

Kent C. Dodds’ .filter() Trick Will Change How You Use JavaScript. This one-liner uses the Boolean constructor to magically remove all falsy values from an array ✨.

https://twitter.com/kentcdodds/status/1009918457394225152

const plugins = [
    isProd ? optimizePlug : null,
    isProd ? prodOnlyPlug : null,
    !isProd ? testingPlug : null,
    usefulPlug,
].filter( Boolean );

It's Hack Week again at SUSE. 🥳 An annual tradition where we all work on passion projects for a whole... Tagged with mojolicious, perl, javascript, node.

Free interactive 3D characters for reference poses.

Also mannequin.js

https://boytchev.github.io/mannequin.js/posture-editor.html

JavaScript is now a very popular programming language, based on which a large number of libraries and frameworks have been derived. But no matter how the upper ecosystem evolves, it can’t do without vanilla JavaScript. Here I’ve selected 4 JavaScript interview questions to test a programmer’s skill of vanilla JavaScript.

Duet Date Picker is an open source version of Duet Design System’s WCAG 2.1 compliant date picker. Duet Date Picker can be implemented and used across any JavaScript framework or no framework at all. We accomplish this by using standardized web platform APIs and Web Components.

After reading your article, I am more convinced than ever to stick with jQuery.

Modern web app frameworks like React, Vue, and Svelte use a component-based model. Within this model, the most common way to introduce a memory leak is something like this:

window.addEventListener('message', this.onMessage.bind(this));

That’s it. That’s all it takes to introduce a memory leak. If you call addEventListener on some global object (the window, the , etc.) and then forget to clean it up with removeEventListener when the component is unmounted, then you’ve created a memory leak.

A mostly reasonable approach to JavaScript

Note: this guide assumes you are using Babel, and requires that you use babel-preset-airbnb or the equivalent. It also assumes you are installing shims/polyfills in your app, with airbnb-browser-shims or the equivalent.

If you've never heard of Airbnb style guide, I highly recommend that you take a look at the following pieces of documentation:

• Airbnb JavaScript style guide
• Airbnb React style guide
• Airbnb CSS in JavaScript style guide
• Airbnb Sass style guide

Use placeholders

There are different placeholders that can be used as listed below
%o — which takes an object,
%s — which takes a string, and
%d — which is for a decimal or integer

Below are 3 questions from Microsoft’s Online Assessment 2019 for developers

The underlying concept of design patterns has been around in the software engineering industry since the very beginning, but they weren’t really so formalised. Design Patterns: Elements Of Reusable Object-Oriented Software written by Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides — the famous Gang of Four (GoF)—was instrumental in pushing the formalised concept of design patterns in software engineering. Now, design patterns are an essential part of software development and have been so for a long time.

I post multiple choice JavaScript questions on my Instagram stories, which I'll also post here! Last updated: December 24th

From basic to advanced: test how well you know JavaScript, refresh your knowledge a bit, or prepare for your coding interview! muscle rocket I update this repo regularly with new questions. I added the answers in the collapsed sections below the questions, simply click on them to expand it. It's just for fun, good luck! heart

The legacy of jQuery is quite impressive and a great example of how it influenced the standards are the querySelector and querySelectorAll methods which mimic jQuery’s $ function.

You can use document.querySelectorAll in the same way as document.querySelector. Any valid CSS selector will do and the only difference is querySelector will return a single element whereas querySelectorAll will return a static NodeList containing the found elements. If there are no elements found it will return an empty NodeList.

You don’t necessarily need to run querySelector(All) on document. You can run it on any HTMLElement to run a relative search: