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JavaScript Fetch API is the modern standard for creating network Requests inside browsers. Have you ever written confusing xmlhttprequest code with nested callback routines? Then i’m sure you were aware of why the programming community cheered when fetch finally came around. Fetch isn’t just replacing the older Way; it changes entirely how we think about […]
JavaScript Fetch API: 7 Proven Techniques Read More »
When I look at JavaScript async/await I am reminded of how nice it would have been had I understood its power sooner. There are so many people who have had to waste hours untangling through then blocks or debugging a promise chain that swallowed their error silently. JavaScript async/await was made available in ES2017 to
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Creating and working with JavaScript promises can be somewhat of a trial by fire. The moment you have had to wrestle with network requests, timers, etc., you have probably experienced that pyramidal horror where your code has indented so far to the right that it appears to fall off the left side of the screen.
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Understanding the nature of JavaScript closures is an accomplishment that fundamentally alters how you write and think about code. While closures may appear as some sort of mysterious entity, they really are just functions that “remember” their environment of origin. You’ve likely utilized closures before without being aware of doing so. For example, whenever you
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JavaScript callbacks are important to support the asynchronous operations such as user interactions (e.g., mouse clicks), network requests (e.g., loading images or making API calls), timers (e.g., setTimeout()), and reading files. Callbacks are functions that you pass as parameters to other functions. These receiving functions will execute the callback functions at some point in the
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Step #1: Adding event Listeners – The core of JavaScript event handling Adding event Listeners is perhaps the most critical part of javascript event handling. Using addEventListener(), a developer can assign a function to a DOM element. Upon occurrence of a particular event (such as “click”, “submit”, etc.), this assigned function will be called by
JavaScript Event Handling: 5 Quick Wins Read More »
Modifying DOM elements is how you make a static page responsive to user interaction, data and time. After you select an element, you can essentially change nearly anything about it. Have you ever clicked a button that caused some text to show up? Have you changed themes and seen colors alter? Or have you submitted
Modifying DOM Elements: 5 Powerful Tips Read More »
Making learning DOM manipulation basic skills turn a static HTML page into a living and interactive experience. DOM manipulation basics is used to allow javascript to communicate with a static HTML page. Most people have experienced websites that update dynamically, a new tweet appears; a form error pops-up; a light/dark theme toggle changes the overall
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This learning guide provides a complete overview of how to learn JavaScript Objects. Learning JavaScript Objects will help you move from simple variables to structured, organized data. Arrays store lists. JavaScript objects describe real world items with named attributes. An object can think of as a container holding together the associated information about something. A
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Objects are the second major form of built-in data structure in JavaScript. As explained previously, Arrays were for lists and objects are for describing things with named attributes. Think of an object as an entity in the real world that has several characteristics. A car has a color, a model, a year and mileage. A
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