Created
February 11, 2021 11:05
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Обработка ошибок в Promise
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta http-equiv="X-UA-Compatible" content="IE=edge"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <title>Promise Error</title> | |
| <style>img { | |
| max-width: 200px; | |
| }</style> | |
| </head> | |
| <body> | |
| <button id="btn">Начать загрузку</button> | |
| <script src="index.js"></script> | |
| </body> | |
| </html> |
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| const btn = document.getElementById('btn') | |
| const arr = [ | |
| '1.jpeg', | |
| 'FAILED2.jpg', | |
| '3.jpeg', | |
| '4.jpg' | |
| ] | |
| function creatImg(imgPath, img1) { | |
| return new Promise((resolve, reject) => { | |
| try { | |
| let img = document.createElement('img') | |
| img.setAttribute('src', imgPath) | |
| img.setAttribute('id', img1) | |
| const body = document.querySelector('body') | |
| body.appendChild(img) | |
| document.getElementById(img1).addEventListener('load', () => { | |
| resolve(`фото загрузилось - ${imgPath}`) | |
| }) | |
| document.getElementById(img1).addEventListener('error', () => { | |
| reject(`Ошибка при загрузки изображения - ${imgPath}`) | |
| }) | |
| } catch (e) { | |
| reject(`Ошибка при загрузки изображения - ${imgPath}`) | |
| } | |
| }) | |
| } | |
| btn.addEventListener('click', () => { | |
| creatImg(arr[0], 'id01') | |
| .then(response => { | |
| console.log(response) | |
| return creatImg(arr[1], 'id02') | |
| }, | |
| () => creatImg(arr[1], 'id02')) | |
| .then(response => { | |
| console.log(response) | |
| return creatImg(arr[2], 'id03') | |
| }, | |
| () => creatImg(arr[2], 'id03')) | |
| .then(response => { | |
| console.log(response) | |
| return creatImg(arr[3], 'id04') | |
| }, | |
| () => creatImg(arr[3], 'id04')) | |
| .catch(err => console.log('error!!!', err)) | |
| }) |
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