Q1. What are lambda expressions or arrow functions?
**Arrow functions** (also known as "lambda expressions") provide a concise syntax for writing function expressions in JavaScript. Introduced in ES6, arrow functions are o...
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Q2. What are classes in ES6?
In ES6, JavaScript classes are primarily syntactic sugar over JavaScript’s existing prototype-based inheritance. For example, the prototype based inheritance written in f...
Q3. How do you check whether a string contains a substring?
There are 3 possible ways to check whether a string contains a substring or not, 1. **Using includes:** ES6 provided `String.prototype.includes` method to test a string c...
Q4. How does synchronous iteration works?
Synchronous iteration was introduced in ES6 and it works with below set of components, **Iterable:** It is an object which can be iterated over via a method whose key is ...
Q5. List down some of the features of ES6
Below are the list of some new features of ES6, 1. Support for constants or immutable variables 2. Block-scope support for variables, constants and functions 3. Arrow fun...
Q6. What is ES6?
ES6 is the sixth edition of the javascript language and it was released in June 2015. It was initially known as ECMAScript 6 (ES6) and later renamed to ECMAScript 2015. A...
Q7. What are default parameters?
In ES5, we need to depend on logical OR operators to handle default values of function parameters. Whereas in ES6, Default function parameters feature allows parameters t...
Q8. What are template literals?
Template literals or template strings are string literals allowing embedded expressions. These are enclosed by the back-tick (`) character instead of double or single quo...
Q9. How do you write multi-line strings in template literals?
In ES5, you would have to use newline escape characters('\\n') and concatenation symbols(+) in order to get multi-line strings. ```javascript console.log("This is string ...
Q10. What are raw strings?
ES6 provides a raw strings feature using the `String.raw()` method which is used to get the raw string form of template strings. This feature allows you to access the raw...