WBE_Praktikum_5/code/async/promise-chain.js

21 lines
474 B
JavaScript

//
// Rejecting a promise by throwing an error in the constructor
// callback or in the handler chain
//
var promise = new Promise((resolve, reject) => {
// reject()
// throw Error('fail')
resolve()
})
promise
.then(() => console.log('step1'))
// .then(() => { throw Error('fail') })
.then(() => console.log('step2'))
.catch (() => console.log('catch1'))
.then(() => console.log('step3'))
.catch (() => console.log('catch2'))
.then(() => console.log('step4'))