文件file对象转换为base64格式数据
function getBase64 (file) {
return new Promise(function (resolve, reject) {
let reader = new FileReader()
let imgResult = ''
reader.readAsDataURL(file)
reader.onload = function () {
imgResult = reader.result
}
reader.onerror = function (error) {
reject(error)
}
reader.onloadend = function () {
resolve(imgResult)
}
})
};
export default getBase64;

用:

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