Following the original JavaScript hacks for hipsters, here’s some new goodies. Coding JavaScript in 2018 is actually fun again!
Here’s a photo of non-JavaScripter, non-hacker, non-ES6er, non-hipster on a PacMan background:
Photo by Erik Lucatero on Unsplash
Hipster Hack #1 — Swap variables
Using Array Destructuring to swap values
let a = 'world', b = 'hello'[a, b] = [b, a]console.log(a) // -> helloconsole.log(b) // -> world
// Yes, it's magic
Hipster Hack #2 — Async/Await with Destructuring
Once again, Array Destructuring is great. Combined with async/await and promises to make a complex flow — simple.
const [user, account] = await Promise.all([fetch('/user'),fetch('/account')])
Hipster Hack #3 — Debugging
For anyone who likes to debug using console.logs, here’s something awesome (and yes, I heard of console.table):
const a = 5, b = 6, c = 7console.log({ a, b, c })
// outputs this nice object:// {// a: 5,// b: 6,// c: 7// }
Hipster Hack #4 — One liners
Syntax can be so much more compact for array operations
// Find max valueconst max = (arr) => Math.max(...arr);max([123, 321, 32]) // outputs: 321
// Sum arrayconst sum = (arr) => arr.reduce((a, b) => (a + b), 0)sum([1, 2, 3, 4]) // output: 10
Hipster Hack #5 — Array concatenation
The spread operator can be used instead of concat:
const one = ['a', 'b', 'c']const two = ['d', 'e', 'f']const three = ['g', 'h', 'i']
// Old way #1const result = one.concat(two, three)
// Old way #2const result = [].concat(one, two, three)
// Newconst result = [...one, ...two, ...three]
Hipster Hack #6 — Cloning
Clone arrays and objects with ease:
const obj = { ...oldObj }const arr = [ ...oldArr ]
Update: As mentioned in the comments — this is a shallow clone.
Hipster Hack #7 — Named parameters
Making function and function calls more readable with destructuring:
const getStuffNotBad = (id, force, verbose) => {...do stuff}const getStuffAwesome = ({ id, name, force, verbose }) => {...do stuff}
// Somewhere else in the codebase... WTF is true, true?getStuffNotBad(150, true, true)
// Somewhere else in the codebase... I ❤ JS!!!getStuffAwesome({ id: 150, force: true, verbose: true })
Already knew them all?
You’re a true hipster hacker, you can read more tips & tricks for writing better code.
Let’s talk more on twitter. You can also check my startup Torii where we make “SaaS headache” go away.