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Copy and encapsulate the following code in the xxx.js file, and place it under the project folder utils
export default function readImg (file) { return new Promise((resolve, reject) => { const img = new Image() const reader = new FileReader() reader.onload = function (e) { img.src = e.target.result } reader.onerror = function (e) { reject(e) } reader.readAsDataURL(file) img.onload = function () { resolve(img) } img.onerror = function (e) { reject(e) } }) }
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Use: import xxx.js file, call method
// 注意引入路径不要出错 import readImg from '@/utils/xxx.js' readImg(file).then(res => { // 输出图片img对象 console.log(res) }).catch(err => { console.log(err) })
js converts the file file object into an img object
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Origin blog.csdn.net/lhh_gxx/article/details/128377119
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