A new addition to the JavaScript family, the 13th iteration, is scheduled for release in June 2022, marking the 25th anniversary since its debut in 1997. Through arduous scrutiny of the ECMAScript 2022 (ES2022) by the Technical Committee 39 (TC-39), features have been vetted, ratified and approved for stage 4 verification if they have undergone testing at least twice with due endorsement by TC-39. Potential ES2022 functionalities that have cleared stage 3 of the verification process and await implementation, may also be added for potential future use.
Okay, let’s commence this celebration!
Title Page | Table of Contents |
– Discover the pivotal new features of ES2022.
- Operator at the highest level is currently pending.
- Stated as class fields.
- Proprietary Procedures and Segregated Domains
- Private static methods at type-level and static fields at class-level
- Indexes for matching Regex
- Evaluation of private-sector brands for ergonomic parameters
- Indexing via the .at() Method
- Deriving conclusions about time
Last Words
Significant Improvements to JavaScript in ES2022
In order to be a proficient developer, it is crucial to remain updated with the most recent advancements in the JavaScript language. This article discusses the latest Stage 4 additions which are scheduled to be incorporated and turned into stable releases by June 2022. These innovations will bring several new competencies to the JavaScript language, enabling developers to use the language with greater proficiency and efficiency.
Enhancement to JavaScript: The await Operator is now a Block-level Construct in ES2022.
Developers have been using the asynchronous capabilities of JavaScript in their projects for quite some time. In the past, utilizing the await keyword without an asynchronous context was prohibited, resulting in an error. Nevertheless, it is now feasible to define await operators outside of asynchronous classes and methods, obviating timing problems caused by limited asynchrony. This enables developers to wait for external modules to import the pertinent resources before executing the intended function.
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import {getUser} from ‘. /data/User’
let user=await getUser();
Notable Features of JavaScript: Declaring Fields in Classes and Functions in ES2022 Stage 4.
Declaring a constructor is no longer mandatory before specifying a class field. This constraint has been removed, facilitating independent declaration of class fields.
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class hello{
fields=0;
title;
}
At present, this syntax will not generate an error notification.
JavaScript Features: Internal Methods and Fields
Are you trying to create a private class declaration? You can accomplish this by simply putting # before the keyword.
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class hello{
fields=0;
#title;
}
Take a look at all the exciting new possibilities that JavaScript has to offer.
Unique Capabilities of JavaScript: Static Class Fields and Private Static Methods
A static class field is one that cannot be accessed within any object instances of that class, except through the prototype. With the latest ES2022 updates, the “static” keyword can be utilised to define static class fields as well as private static features.
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class hello {
name;
static title=’here’;
static get title(){
return title;
}
}
The keyword “static” is used for handling, saving settings permanently, and replicating objects.
Regular Expression Match Indices are a New JavaScript ES2022 Feature.
Thanks to the implementation of the fourth stage of ES2022, it is now feasible to discover the start and end indices of a matched string by utilising the letter “d” alone. Previously, the only way to obtain this indexing data was by carrying out a string-matching operation.
Discover How to Obtain a List of Possible Partners.
- You can achieve this using Regexp.exec, which will then provide the results in a sequential order.
- By using String.matchAll, you can obtain an iterator.
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const animals=’Animals:cow,dog,horse’
const regex=/(cow)/gd;
const matches=[…fruits.matchAll(regex)];
matches[0]
Ergonomic Protected Field Namechecks are Among the Latest and Greatest Features of JavaScript.
In earlier versions of the program, when a user tried to gain access to a public field that had not been declared, an undefined error would be produced. Furthermore, the same error message would be generated in the event that a user tried to gain access to a private field.
The ES2022 specification offers a simple way to determine if a certain field exists in a specified class. By using the “in” operator, this can be accomplished more precisely. These capabilities will also be made accessible even during private instruction.
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class hello{
name;
#title;
get #title(){
return #title;
}
set #title(){
#title=null;
}
static hasTitle(obj1){
return #title in obj1;
}
}
The .at() Indexing Capability is Among JavaScript’s Numerous Convenient Features.
Previously, in order to access a specific element in an array, we had to use square brackets. This was relatively simple, except when we needed to execute a reverse iteration, in which case we had to employ negative indexing. To use negative indexing, we had to compute the string’s length. With the introduction of the .at() method, this process has become considerably simpler.
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array= [1.2.4.5]
console.log(array[array.length-1]);
console.log(array.at(-1));
When working with indexes that begin at 0, the .at() method offers a convenient alternative to traditional square bracket notation. Additionally, if a negative index is used, the .at() method will commence iteration from the end.
Using Time-Based Operations in JavaScript
The third-stage ES2022 JavaScript functionality is expected to replace libraries like Moment.js. In the event that a Date object is unsuccessful, a Temporal will serve as the replacement. The Temporal function’s Unix timestamp feature will be the closest substitute. This global Temporal function will provide an excellent identifier for APIs that manage timestamps and dates. The temporal operating system will be utilized to oversee dates, timings, time zones, and calendars.
Overview of JavaScript Features
The new JavaScript ES2022 capabilities are set to be released in June 2022, and we can guarantee that the Stage 4 improvements will be included in the final version. However, it is possible that the Stage 3 features may not be created in time and therefore will be excluded from the ES2022 release. Nevertheless, these new functions are expected to greatly diminish task completion times.
