What is the syntax for an arrow function in ES6?
A). function(a, b) { return a + b; }
B). (a, b) => { return a + b; }
C). (a, b) => a + b
D). Both B and C
What is the output of const x = 10; x = 20;?
A). 20
B). 10
C). Error
D). undefined
What does Promise.resolve(5).then(console.log) print?
A). 5
B). undefined
C). null
D). Error
How do you interpolate variables in a string using template literals?
A). Hello, + name + '!'
B). Hello, ${name}!
C). 'Hello, ' + name + '!'
D). Both A and B
How do you import a default export in ES6?
A). import { myFunc } from 'module';
B). import myFunc from 'module';
C). import * as myFunc from 'module';
D). import { default as myFunc } from 'module';
What is the output of typeof Symbol('description')?
A). 'string'
B). 'object'
C). 'symbol'
D). 'undefined'
What is the result of [...['a', 'b', 'c']]?
A). ['a', 'b', 'c']
B). [['a', 'b', 'c']]
C). ['abc']
D). Error
What does the ... operator do when used in a function parameter?
A). It spreads an array
B). It restates the parameters
C). It indicates a default parameter
D). It represents the rest of the arguments
What does the for...of loop iterate over?
A). Object properties
B). Object values
C). Array indices
D). Iterable objects
How can you create a new promise in ES6?
A). new Promise(function)
B). Promise(function)
C). promise(function)
D). New Promise(function)