base64码图片转为blod并保存到本地

const downloadImg = () => { //url为base64码 const base64Data = url.value const binaryData = atob(base64Data) const uint8Array = new Uint8Array(binaryData.length) for (let i = 0; i < binaryData.length; i++) { uint8Array[i] = binaryData.charCodeAt(i) } const blob = new Blob([uint8Array], { type: 'image/png' }) const url2 = URL.createObjectURL(blob) const link = document.createElement('a') link.href = url2 link.download = '二维码图片.png' link.click() }