ES2017

• Description
• Async functions
  • Fulfilling a promise
  • Rejecting a promise
• Object functions
• String methods

Description

What’s new in ES2017

Async functions

Fulfilling a [[id:14e0ce4b-b4b1-46fe-946a-c519550682ac][promise]]

async function asyncFunc() {
  return 123;
}
 
asyncFunc().then((x) => console.log(x));
// 123

Rejecting a [[id:14e0ce4b-b4b1-46fe-946a-c519550682ac][promise]]

async function asyncFunc() {
  throw new Error("Problem!");
}
 
asyncFunc().catch((err) => console.log(err));
// Error: Problem!

Object functions

• Object.entries
• Object.values
• Object.getOwnPropertyDescriptors

String methods

Pads the beginning of a [JavaScript Strings](JavaScript Strings)

• [JavaScript String padStart Method](JavaScript String padStart Method)
• [JavaScript String padEnd Method](JavaScript String padEnd Method)