ES6 Reviews and details

Social recommendations and mentions

• Common JavaScript Mistakes Developers Make

  Block scope: Introduced in ES6 (ECMAScript 2015), block scope allows you to declare variables with the let and const keywords within specific code blocks defined by curly braces, such as if statements, loops, and arrow functions. This provides even more precise control over variable accessibility and helps prevent unwanted side effects. - Source: dev.to / about 2 months ago

• You're parsing URLs wrong.

  But JavaScript didn't always have a good way to construct and parse URLs built in. The URL object was first included in the ECMAScript 2015 specs. - Source: dev.to / 5 months ago

• Time, Space and Complexity

  The ECMAScript 2015 (ES6) standard introduced the concept of "proper tail calls" (PTC), which mandates that compliant JavaScript engines must implement TCO for tail calls. PTC ensures that a function call in tail position does not increase the call stack size, thus allowing for potentially infinite recursive calls in constant stack space. - Source: dev.to / 10 months ago

• Var, Let , Const - Javascript basics

  Let was introduced in ES6ECMAScript2015. It is Block Scoped, any code written within {} is said to be in a Block. So, that's the restriction that ECMA wanted to implement with let, making variables inaccessible outside the block. - Source: dev.to / 6 months ago

• let j = "JavaScript"(A newbie's guide on Declaring Variables in JavaScript)

  Both Symbol and BigInt were the latest data type introductions to ES6. - Source: dev.to / about 1 year ago

• 5 Things You Might Not Know About JavaScript

  Symbol: Introduced in ECMAScript 2015, Symbol is a primitive type that represents a unique identifier. Symbols are often used as keys in objects to avoid name collisions. - Source: dev.to / over 1 year ago

• Here's a few examples of features from ECMAScript 2021(ES11):

  These are additional features that ECMAScript 2021 introduces, it's important to note that some of them may not be supported on all JavaScript engines yet. Follow official documents for more features ECMAScript. - Source: dev.to / over 1 year ago

• Ask HN: What is the Execution Context in JavaScript exactly?

  On https://262.ecma-international.org/6.0/#sec-execution-contexts it says: > An execution context is a specification device that is used to track the runtime evaluation of code by an ECMAScript implementation. I fail to understand what is meant by *specification device*. Searching for this sentence doesn't yield any useful result and I'm left theorizing it's an abstraction specifying the things related to the part... - Source: Hacker News / almost 2 years ago

• Everything You Need to Know About JavaScript Import Maps

  When ES modules was first introduced in ECMAScript 2015 as a way to standardize module systems in JavaScript, it was implemented by mandating the specification of a relative or absolute path in import statements. - Source: dev.to / about 2 years ago

• JavaScript generators ELI5

  JavaScript generators are one of the most misunderstood and complicated concepts in JavaScript because most people don't see the value in them, but bare in mind that this subject is actually quite useful. JavaScript generators first appeared in the ES6(ECMAScript2015) version of the JavaScript language. - Source: dev.to / over 2 years ago

• My Favorite npm Commit

  I'm being pedantic here but it's not fully defined at least for ECMAScript 2015. Source: over 2 years ago

• JavaScript quiz that may confuse you

  But instead, the initialiser became awkwardly half inside the loop and half outside the loop: inside as regards lexical bindings, but outside as regards execution (… and lexical bindings in the remainder of the initialiser). That’s wacky. I understand why they did it, and in practice it was probably the right decision, but it’s logically pretty crazy, and much more convoluted for the spec and... - Source: Hacker News / over 2 years ago

• Is there an way to tell if you're using functionality past ES6?

  In short, it's very hard to target a specific version of JavaScript since it's always evolving. Even certain arguments or usages of methods may be ES7+ despite the method itself being ES3. The only real way to check is to review the spec for every method and language feature you use. Source: over 2 years ago

• Writing Clean JavaScript — ES6 Edition

  This article discussed briefly some important steps that can be taken to increase your JavaScript code using the latest ECMA2015/ES6 syntax. Again, most of these concepts can be generalized and applied to different programming languages. Adopting these practices can take some time especially for larger codebases, but will guarantee that --- for the long run --- your code becomes readable, scalable, and easy to... - Source: dev.to / almost 3 years ago

• Javascript Hoisting

  After introduction of ES6, Variables in Javascript can be declared by three types: var,let and const. - Source: dev.to / over 3 years ago

• JavaScript Event Loop

  EcmaScript Standard - EcmaScript standard has documentation around how each component such as Job Queues, Call Stack should be implemented. I find these details particularly interesting. - Source: dev.to / over 3 years ago