Web Application Development Latest Feature

keshav

EcmaScript is the assimilated scripting language that JavaScript appliance. If you think EcmaScript is a awesome name, you’re not alone. The original developer of JavaScript, once wrote that the name EcmaScript sounds like a skin disease. Call aside, JavaScript is one of the most important languages in presence today.  Every browser has a JavaScript editor, JavaScript on the server is enhancing ever more popular, and now it’s possible to use JavaScript for desktop, nativity mobile and native Windows 8 apps.  A new version of EcmaScript will have a broad brunt on web development company.

Arrow Functions

Many features in ES6 could essentially change how new JavaScript applications are creator. Arrow functions is not going to essentially change anything. Arrow functions provide two features: unwritten consider of the this keyword and less ceremony when describing an anonymous function.

Modules

Modules have the possible to entirely change how many JavaScript applications are all together and assimilate a best practice in some already modular applications. Modules in ES6 provide a way to load and manage assurance via the new import and export keywords. There are a few good solutions in ES5, namely 3rd party libraries like CommonJS  or node modules. Motility is a such an important approach for large applications, that it makes sense to include it as a core language feature.

Block Scoping

Scoping in JavaScript is confusing for developers with a C/C#/Java background. Hoisting can add to that confusion. In ES5, variables are either globally or locally function scoped. The lack of block scoping has caused confusion in ES5, and resulted in some interesting patterns to achieve block scope.

Promises

Promises provide a mechanism to handle the results and errors from allochronic operations. You can accomplish the same thing with callbacks, but promises provide improved reputability via method string and concise error handling. Promises are currently used in many JavaScript libraries.

Promise.resolve(value)

I can’t describe it any better than the Mozilla docs: Returns a Promise object that is decide with the given value. If the value is a then-able, the returned promise will “follow” that then able, accepting its conditional state; otherwise the returned promise will be satisfied with the value.

Promise.cast(value)

This method is really useful if you are trading with actual functions or services that don’t return a promise. If the value passed in is a promise, cast returns the value, otherwise the value is coerced to a promise.  Either way, you can deal with the result as a promise.

Promise.race(iterable)

Promise.race returns the first promise in the iterable to resolve. Note the use of arrow functions.

 

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