ES6 Features

Updated April 18, 2023

Introduction to ES6 Features

• The ES6 features are several functions of the ECMAScript 6 version to create advanced applications.
• The ES6 features are created a modern application using advanced features and methods of the ES6 technology.
• The ES6 features are advanced methods and functions to create websites and applications with more readability.
• The ES6 features are advanced attributes, functions, and characteristics to write less code and display animated and advanced applications.
• The ES6 features are modern and advance JavaScript properties to create an application with client-side and server-side code on one page.
• The ES6 features display and operate the function of the websites using JavaScript advanced version.
• The ES6 features operate on an array, advanced keyword, animated template, and modern attributes.

Features of ES6

• The ES6 features provide multiple advanced features for the variable, values, and arrays.
• The following ES6 features show the uses and description of the function in the application.

“let” Function: The “let” function creates or declares a variable in the block of the javascript scope.

Syntax:

Var var_name = value;
{ let var_name = value2; }

“const” Function: The “const” keywords declare a variable in the block of the javascript scope. This variable does not change values.

Syntax:

Var var_name = value;
{ const var_name = value2; }

Arrow Function: The arrow function uses a short syntax of the function code. This function returns the variable using the curly bracket. You can use either the “var” or the “const” keyword.

Syntax:

const var_name = (value1, value2) => value1 * value2;

o For/of statement: the for/of loop uses in an array, string, map, and collection consume objects. This function works with iteration operation using for loop.

Syntax of the loop:

for( let variable_name of iterable_variable){
write code here…
}

• Map Object: the ES6 creates map objects and their value. The object represents the key and the value represents data. You can create, operate and insert objects of the map collection.

Syntax of create map object:

Const v1 ={name: 'values'};
const v2 = new Map();

• Set Object: the ES6 provides set collection coding on the web page. This feature creates, inserts, and operates set objects.

Syntax of create set object:

const v2 = new Set();

• Class keyword: the ES6 supports the class of the backend function. You can create and operate the entire class and its coding. The “class” keyword is required for the server-side program.

Syntax of the class keyword:

class Class_name{ write code, constructor, the method here… }

• “Promise” object: the “Promise” creates an object and uses coding operation. The coding operation works on the “producing code” as well as the “consuming code”. The consuming code represents the wait operation for the result. The “producing code” represents the “take time” operation for coding.
• Symbol data type: The symbol is one of the primitive data types. This data type is similar to a number, string, and Boolean. The symbol does not access other code and identifies a hidden identifier.
• Default Parameter: the default parameter contains default values. This value initializes in the method or function.
• Rest Parameter: the rest parameter function contains an indefinite number in the method. This number stores as an argument and operates the number operator.
• string.includes() method: if string contains value then include method shows true value. If the string does not contain a value then the include method shows a false value.
• string.startsWith():if string starts with the required value then startsWith() method shows true value. If required value do not available then startsWith() method shows false value.
• string.endsWith():if string ends with the required value then endsWith() method shows true value. If required value doe not available then endsWith() method shows false value.
• Array.from() method: the Array.from() displays array of the object and string value. This method returns iterable objects and given objects with a length.
• Array. keys() method: the Array. keys() displays an Iterator array of the object and string value. This method returns iterable objects using keys.
• Array. find() method: The array find() method displays the value of the first array data. You can add any comparison condition and operation. The array itself, array value, an array index passes as arguments.
• Array.findIndex() method: The array findIndex() method displays the index value of the first array data. You can add any comparison condition and operation. The array itself, array value, an array index passes as arguments.
• Template literal: this feature contains parameters in the curly bracket. This template comes with the dollar $ sign.
  Var var_name = ${value}.

Math Method:

The Math method works on numerical values. This methods contains trunc(), sign(),cube root property, and log methods. This method returns the respective output of the numerical data.

1. math.trunc(): this function returns integral part of the value.
2. math.sign(): this function returns negative or positive of the value.
3. math.cbrt(): this function returns cube root of the value.
4. math.log2(): this function returns base 2 logarithm of the value.
5. math.log10(): this function returns base 10 logarithm of the value.

• Number Properties: the number property contains the “EPSILON”, “MAX_SAFE_INTEGER” and “MIN_SAFE_INTEGER” properties.

Number Methods:

The number methods contain two sub-methods to determine Boolean output.

1. Number.isInteger(value): if value is integer then method displays true output.
2. Number.isSafeInteger(value): if value is safe integer then method displays true output.

Global Methods:

The global methods contain two sub-methods to determine Boolean output.

1. isFinite(value): if value is finite then the method displays true output.
2.  isNaN(value): if value is NaN integer then method displays true output.

Conclusion

• The ES6 features create attractive, elegant, modern, and advance websites and web applications.
• The ES6 features are easy for users and developers for the modern functions and attributes.
• The ES6 features help to show readable and eye-catching web applications for the users or client.
• The ES6 features write less code and create more application templates by the developers.

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