Does JavaScript support array/list comprehensions like Python?

Question

I\'m practicing/studying both JavaScript and Python. I\'m wondering if Javascript has the equivalence to this type of coding.

I\'m basically trying to get an array

Answer 1

Given the question's Python code

print([int(i) for i in str(string) if i not in forbidden])

this is the most direct translation to JavaScript (ES2015):

const string = '1234-5';
const forbidden = '-';

console.log([...string].filter(c => !forbidden.includes(c)).map(c => parseInt(c)));
// result: [ 1, 2, 3, 4, 5 ]

Here is a comparison of the Python and JavaScript code elements being used: (Python -> Javascript):

• print -> console.log
• iterate over characters in a string -> spread operator
• list comprehension 'if' -> Array.filter
• list comprehension 'for' -> Array.map
• substr in str? -> string.includes