Refactoring javascript 1
September 08, 2020
Photo by Florian Krumm on Unsplash
Clean coding in JavaScript
리팩토링 자바스크립트, 클린 코드 작성하기
Using the map function
before
const myList = list => {
const newList = []
for (let i = 0; list.length; i++) {
newList[i] = list[i] * 2
}
return newList
}after
const myList = list => list.map(x => x * 2)Avoid callback hell with async/await
before
const sendToEmail = () => {
getIssue().then(issue => {
getOwner(issue.ownerId).then(owner => {
sendEmail(owner.email, `some text ${issue.number}`).then(() => {
console.log("email successfully")
})
})
})
}after
const sendToEmail = async () => {
const issue = await getIssue()
const owner = await getOwner(issue.ownerId)
const email = await sendEmail(owner.emaill, `some text ${issue.number}`)
console.log("email successfully")
}