Standalone Search Box Example

Microsoft translation with the large content

Microsoft translation with the large content

This is new sample demo component test
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Microsoft translation with the large content

AJAX stands for Asynchronous JavaScript and XML. It is a complete game changer when it comes to user experience. Normally, web pages are loaded one at a time. When a user wants more content, they click a link. With AJAX, a user can click something and content can be loaded into the page, using JavaScript, without reloading the entire page.

Essentially, the user does some event that fires off an AJAX HttpRequest after an XMLHttpRequest object has been created. The server then processes the HttpRequest, and returns the data back to the browser. Now without JavaScript, it would be entirely worthless unless you were posting data to a database. We will set up our AJAX so it calls a JavaScript function, known as a Callback Function, to use our returned data from the server in the next tutorial.

 

We haven’t really changed any HTML elements just yet. Well now, we are here. jQuery simplifies about anything you want to do with HTML elements. jQuery’s primary purpose is to modify a web document’s HTML and CSS files, but how do we actually change HTML elements. We can insert new elements, remove elements, or even edit them using jQuery’s selectors that you read about earlier.

Generally when using jQuery with the intent to change the styling of an element, you want to do one of two things: add/remove a class to it or just change one CSS property. I would argue that it is a much better practice to always add or remove class, even if it is just one property, to/from an element. The reason being that classes are easily selected, but CSS properties require more work.

The effects used in jQuery are probably the cool effects that you have seen on others’ websites. They are extremely powerful and actually require a sizable amount of JavaScript if you were to write it without using the jQuery effects. It is important to understand how these effects work so that you have a greater knowledge of JavaScript. Often, we find ourselves looking for the easy solution, but in fact, it is usually the hard way that teaches us the lessons and concepts that we should know.

Pretty awesome, huh? We are using the different ids of the buttons to run the jQuery function that we want. We use two effects here, hide and show to change the visibility of the first <li> in our <ul> with an id of someList. Obviously, the hide effect is the one that makes the element invisible, and the show effect makes the element visible.

 

  • fadeOut() – animates the element from visible to hidden
  • slideDown() – animates the change of the elements height from hidden to visible
  • slideUp() – animates the change of the elements height from visible to hidden
  • toggle() – alternatives between show and hide effects

We can now utilize our JavaScript functions by referencing them as events in jQuery. A few of these events will save your life. Remember back when you used the HTML element attributes like onclick? Now, you can simply use the jQuery selectors that are listening the entire time the user is viewing the page. Listeners are useful so you are crowding your code with onclicks and other HTML action attributes. So, whenever you want to change an event, you can just go to your JavaScript code and not have to sift through your HTML.

Once the var i reaches 2 in the for loop, it meets the conditional statement i == 2, which is then executed. The statement executed is break;. Once break is executed it actually breaks us out of the for loop, which is why when i equals 2, we exit the for loop and execute document.write( “End of for loop”); instead of ending the for loop when i equals 5.

Before we get into commenting, I want to warn you about the slowly ending war of browser support for JavaScript. Back in the day, writing in JavaScript was a battle. You would have to write a ton of different statements for each different type of browser. Luckily, browsers are starting to get on the same page, and JavaScript is supported by all modern browsers. Update: Several years after writing this article, I must confess the entire world of JavaScript has changed. The assumption in the programming world is that a user will have JavaScript enabled if they intend to run any popular website. So, please code away in JavaScript.

JavaScript has a number of ways to comment

 

Learning AJAX is a great feat for any developer, but when it comes to developing, it is usually best to keep it simple. jQuery already has methods of JavaScript functions that do almost everything AJAX can do. What’s the point in rewriting long code that is already available to you? There isn’t. So, if you really love the fundamental understanding of programming read the AJAX tutorials. If not, read the AJAX tutorial under jQuery.

Javascript Arrays are an object that permits you to store multiple values into a collection for easy reference. For example, if you wanted to track a user’s position position over some time, you could insert the x and y values into an array. Arrays are more than just the example of x and y values though.

Let’s say we are building a calculator. Initially, we might think that we only need to variables. We need one for the first number before the operator is pressed and another one after. Congratulations on us being super static. Maybe we now want to be able to add more than just 2 values before calculating the sum. We should have used an array from the very beginning. If we would have used an array, we could have put all of those numbers in one single array, which is a 1000 times better than having to create a new variable for each number. It is a compliment in the world of programming if someone says your coding is dynamic. Arrays are in fact just that, dynamic.

jQuery makes working with CSS a breeze. The method here is .css(), and it is used very much like the other methods or actions in jQuery. While this entire tutorial will go against my conventional logic of only appending or removing classes, many of you will do it this way because it is much more simple. I must admit that it is a very quick and efficient way of applying CSS properties to an HTML element. Please just don’t paint yourself in a corner using the css method after a selector more than a few times on a single element.

The jQuery CSS Method has three different structures for its 3 different arguments.

Libraries are one of the most essential utilities in any programmer’s tool kit. Sure, you could build all of your code from scratch, but that could turn a week long project into something that takes months. Libraries allow you to automate the simple stuff and bypass the complications of more elaborate scripts with clean alternatives. Fortunately, Javascript’s rapid rise to prominence means that there’s a huge community developing a diverse collection of libraries. It’s the de facto client side scripting language and a practical necessity if you want a dynamic website or app that offers bells and whistles beyond what can simply be accomplished with pure HTML and CSS, but it’s powerful enough to serve as the base for far more complex applications. Unfortunately, this enthusiastic adoption means that it can sometimes be hard to find the right library to suit your needs. Importing too many libraries into your code base can make it hard to find the right functions for your scripts, and worse, it can create conflicts in your functions that could require tricky debugging. Whether you’re looking to figure out what Javascript can do through the creation of a hobbyist project or supercharge development on your professional projects, here are some of the best Javascript libraries available.

What it Does: As the Internet of Things becomes such an important component of modern software, users demand more apps and sites that connect the information they search for directly to their daily lives. Algolia Places makes it easy to integrate map functionality into your programs. By drawing from OpenStreetMap’s expansive and free database of worldwide locations, it allows you to integrate map functionality and autocomplete directly into your HTML code. 
The Coolest Features: Algolia makes it easy to incorporate the sort of quality of life functions you’d find on Google Maps into any application. Autocomplete is available for both address and country searches, meaning that users won’t have to sift through locations thousands of miles away to track down an address just a few blocks away. A ranking algorithm means that the most relevant results will show up first in the feeds of your users, and there’s even the ability to let users narrow down their results using a traditional map and pin structure drawing from that same algorithm. Algolia takes typos into account with its rankings for better results. Search results from the OSM database can even be linked to your internal indices to create smart and targeted results tailored to your mission statement. 

What it Does: While Javascript’s value as a language is well earned, that doesn’t mean that it’s not without its flaws. The one that sticks out the most is perhaps its very limited standard library. Chances are that this won’t be changing anytime soon; so if you want to increase the functionality of your programs without having to build out extensive lines of code, you’re likely going to want a utility library. Underscore is one of the best around, providing an extensive range of functions that expand your native Javascript without requiring you to extend any built-in Javascript objects. 
The Coolest Features: While it may not be the sexiest thing around, Underscore is exceptionally good at sorting things and manipulating data. A lot of these functions are the sort of standards migrating users could expect from functional languages like Python that are built for data visualization and manipulation. The pluck function allows you to create an array of property values using a fraction of the code. There’s also the ability to map arrays, create a ranged list of integers, and invert the keys and values in any object. FindWhere is an essential for anyone working with large data sets, allowing you to quickly identify the first match in your listed key-value pairs. 

What it Does: HTML and CSS are cool, but putting together a sleek and modern user interface can require some incredibly complex coding and tricky workarounds. Built in 2013 by Jordan Walke, React has quickly ascended to a position as one of the most popular libraries for putting together a UI. There’s a good reason for that too. React offers a whole wealth of tools you can use to create an interface that looks slick and adapts responsively to accommodate the demands of multiple devices. Its declarative structure means that you can make adaptations to your code easily without having to worry about the fundamentals breaking and you having to rebuild your structure from the ground up. A smartly designed component-based structure allows you to create exceedingly complex interfaces with far less fuss. 
The Coolest Features: PropType is an especially cool function, as it allows you to more easily debug your program by setting data validation parameters for each of your components. Meanwhile, Object.assign allows quick comparison of components when testing functions so that you can avoid redundancies more easily. 

What it Does: Premonish is a short and sweet library that allows you to easily create sites that predict and respond to the cursor movements of your visitors. A simple API makes integrating it into your site a breeze. By calculating the location and velocity of your cursor, Premonish lets you highlight elements on your page through the use of a variety of CSS functions. While it may be lacking in its variety, it’s a useful library to keep around if you want your site to stand apart from the rest of the herd. 
The Coolest Features: Premonish is a straightforward library that does exactly what it says on the packaging. The premonish function allows you to link together dynamic CSS effects that respond to user input. 

What it Does: Importing Voca will bring a whole raft of string manipulation functions to your project. Working with strings can be a real pain in the vanilla version of Javascript, but Voca comes with a deep function set that can condense laborious tasks into a single line of code. Voca is also eminently modular. That means that you can import the entire library directly into your project or simply pick and choose the functions that are right for you, reducing the risk of redundancies and making for a cleaner code base. This plug and play functionality is further bolstered by the fact that it’s a library with no dependencies. 
The Coolest Features: The functions available through Voca are incredibly dense. You’ll find a dozen case functions that allow you to manipulate your text into practical standards like upper and title case as well as more complex variations like camel and snake case. Digging deeper provides even more robust manipulation options. You can chop up strings at particular characters and code points or use more flexible truncation or slice functions. Additionally, Voca provides robust options for formatting, counting, and indexing strings for more complex string analysis.

Microsoft.com 

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