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Mastering JavaScript: Part 3, Exploring Loops

Suppose your task is to write a program that displays the numbers 1 to 100. One way to accomplish this is to write 100 console.log() statements. But I'm sure you won't, because you'll get tired of line nine or line ten. The only part that changes in each statement is the number, so there should be a way to write only one statement. There are also loops. Loops let us repeat a set of steps within a block of code. While Loop Do-While Loop For Loop Array For-Of Loop For-In Loop While Loop A While Loop repeatedly executes a set of statements when some condition evaluates to true. When the condition is false, the program exits the loop. This kind of loop tests a condition before executing the iteration. Iteration is a loop

Aug 28, 2023 pm 10:37 PM

An exciting coffee break course introducing Angular Controllers

AngularJS has become the framework of choice for many web developers. It is an all-in-one solution for quickly building front-end single-page web applications. However, one trade-off is that we have to address the limitations of the system. One of them is communication difficulties between controllers. We've just launched a new coffee break course called "Sharing Data Between Angular Controllers". Our coffee break courses are super short courses designed to teach a new skill or concept in one go, in this course EnvatoTuts+ instructor Reggie Dawson will show you some simple techniques for sharing data between Angular controllers. You'll learn how to pass data through services, and you'll also learn about passing parameters and router state

Aug 28, 2023 pm 10:09 PM

Explore the HTML5 Page Visibility API

Earlier our browsers did not have tabbed browsing feature but today when you look at all available browsers we can see that all browsers offer this feature. As a programmer, I usually have 10-15 tabs open at a time, and sometimes this number exceeds 25-30. Why use this API? Previously, there was no way to determine which tab was active and which tab was active, but with the help of HTML5VisibilityAPI we can detect if a visitor is viewing our web page. In this tutorial, we will look at how to deal with the HTML5Visibility API along with a simple demonstration to discover the state of the page. In this demo we will base the page on what is visible

Aug 28, 2023 pm 07:33 PM

html page Visibility API Explore programming

Efficient text animation with KUTE.js: Part 4, Text animation

In the second tutorial in this series, you learned how to use KUTE.js to animate different CSS properties of elements on a web page. You learned how to animate all transform properties, as well as properties such as border-radius and border-color. You can also use CSS plugins to animate CSS properties such as font-size, line-height, letter-spacing, and word spacing. KUTE.js also has a text plugin that allows you to animate text within different elements by increasing or decreasing numbers like countdowns or writing strings character by character. In this tutorial, you will learn how to use the CSS and text plugins in KUTE.js for

Aug 28, 2023 pm 06:05 PM

Quick tip: A closer look at jQuery - Grep

In the latest episode of "Anatomy of jQuery," we'll lift the lid on $.grep and see exactly what's going on behind the scenes. Subscribe to our YouTube page to watch all video tutorials! jQuery source of grep //jQuerysourceforthegrepmethodgrep:function(elems,callback,inv){varret=[];//Gothroughthearray,onlysavingtheitems//thatpassthevalidatorfunctionfor(vari=0,length=elems.l

Aug 28, 2023 pm 05:49 PM

Starting with Backbone.js

Unlike its web development counterparts, JavaScript has never really provided structure in the form of a framework. Thankfully, in recent years, this has begun to change. Today I'd like to introduce you to Backbone.JS, a cute little library that makes the process of creating complex, interactive, and data-driven applications much easier. It provides a clean way to separate data from presentation. Backbone.JS Overview Created by Jeremy Ashkenas, the JS ninja who built CoffeeScript, Backbone is an ultra-lightweight library that allows you to create easy-to-maintain frontends. It is backend agnostic and works with any modern Java you already use

Aug 28, 2023 pm 03:41 PM

Embrace the warmth of Underscore.js

As JavaScript slowly moves out of browsers, there are tools that can significantly improve the robustness of JavaScript. One of those tools is called Underscore.js, and that’s the tool we’re going to introduce today. let's start! Meet Underscore.js So what exactly does Underscore do? Underscore is a JavaScript utility library that provides much of the functional programming support you'd expect in Prototype.js (or Ruby), but does not extend any of the built-in JavaScript objects. One of the benefits of working in Python or Ruby is the fancy constructs like map,

Aug 28, 2023 pm 02:53 PM

Top 10 Free and Open Source JavaScript Color Pickers

Color pickers are complex UI elements that allow users to select a color from a given palette. There are two ways to add a color picker to a web page. The first involves simply using an input element and setting the type attribute to color. It's easy to add and you can attach event listeners to make any changes to the web page based on the selected color. One problem with using input elements to create color pickers is that the UI can vary significantly between browsers. This may not always be satisfactory depending on what you are trying to create. Your users usually expect to see only minor changes in the UI, no matter what browser they use. Additionally, the visual appearance of the built-in color picker may not blend properly with the overall theme of your site.

Aug 28, 2023 pm 12:21 PM

Developing a custom image editor with CamanJS: Extended filter options and blending modes

In this first tutorial of our CamanJS image editor series, we edit images using only the built-in filters. This limits us to some basic effects like Brightness, Contrast and 18 other more complex filters like Vintage, Sunrise, etc. They are all easy to apply, but we don't have full control over the individual pixels of the image we want to edit. In this second tutorial, we learned about layers and blending modes, which give us more control over the image we're editing. For example, you can add a new layer to the canvas, fill it with a color or image, then place it on the parent layer and apply a blending mode. However, we still haven't created our own filter, and the blending modes we can apply are limited to C

Aug 28, 2023 am 10:05 AM

Introducing our latest JavaScript study guide

Do you want to learn JavaScript? We offer tons of JavaScript courses and tutorials on EnvatoTuts+, but sometimes it can be hard to know where to start. So we’ve put together a free JavaScript learning guide to walk you through the process from start to finish. What You'll Learn The study guide starts from the beginning, asking the simple question "What is JavaScript?" It then takes you through the basics of JavaScript and introduces jQuery, a cross-platform JavaScript library that lets you learn more Easily code for the browser. At each stage of the process, the guides include links to more in-depth courses and tutorials, such as

Aug 27, 2023 am 11:33 AM

How to iterate over object keys using JavaScript

Custom objects cannot be iterated using for...of loops. Additionally, you cannot use iterator methods like map() and forEach(). If you do this, you will receive a TypeError in every instance. Instead, use for...in to iterate over objects. This method iterates over all enumerable, non-symbolic properties of the object. In the example below, we use it to iterate over all three properties of obj, and for each property we log a string consisting of the property name (i.e. its key) and its corresponding value. varobj={a:1,b:2,c:3};for(constpropinobj){console.log(`obj.${prop}

Aug 27, 2023 am 09:17 AM

Iterate object key method:

Create a cool animated navigation using CSS3

In the old days of web development, developers would rely on Adobe's Flash whenever they needed to create any kind of animation for their website. Over time, people abandoned Flash and started doing many of these things with CSS and JavaScript. Finally, with CSS3 and the broad browser support it now enjoys, we can do some pretty amazing things with just some CSS3 and nothing else. In this tutorial, I'll show you how to create a cool animated navigation menu using CSS3. You can see it in action in the CodePen demo below: Excited about implementing menus? let's start. Deciding to markup HTML5 quotes

Aug 27, 2023 am 09:17 AM

css animation navigation

Telerik: From Angular expertise to mobile mastery

Angular is one of the most widely used JavaScript frameworks today. With its simple and flexible component-based approach, it has succeeded in revolutionizing the way data-driven web applications are created. Angular apps are always browser-only, though, whether it's an actual browser or a web view inside a hybrid mobile app. Therefore, their performance is always slightly worse than native applications. Thanks to Telerik and Google, that's all about to change. After nearly a year of collaboration, teams from both companies have come up with an innovative solution that not only decouples Angular from the browser, but also allows it to run natively on any platform. It involves using Angular2 (completely heavy

Aug 27, 2023 am 08:09 AM

Enhance HTML with AngularJS directives

The main feature of AngularJS is that it allows us to extend the functionality of HTML to serve the purpose of today's dynamic web pages. In this article, I'll show you how to use AngularJS's directives to make your development faster and easier, and make your code more maintainable. Preparation Step 1: HTML Template To make things easier, we will write all the code in an HTML file. Create it and put the basic HTML template into it: <!DOCTYPEhtml><html><head></head><body></body></html

Aug 27, 2023 am 08:01 AM