javascript 单线责任

Posted 2021-05-03

// 1. Single line responsability, one line one thing
const pag = localStorage.getItem('pag')
const IDs = JSON.parse(pag).IDs
IDs.map(id => console.log(id))

// 2. Single line for everything
JSON.parse(localStorage.getItem('pag')).IDs.map(id => console.log(id))

// Operator pipe
import { map, pipe } from 'ramda';

const pag = localStorage.getItem('pag')
const result = pipe(
  JSON.parse,
  prop('IDs'),
  map(console.log),
)(pag);