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我嘗試將base64轉換爲blob,但得到錯誤未捕獲InvalidCharacterError:未能在'Window'上執行'atob':要解碼的字符串編碼不正確。未捕獲InvalidCharacterError:無法從base64轉換爲blob圖像
我測試了我的base64形象在這裏http://codebeautify.org/base64-to-image-converter數據和它的工作很好,我能看到渲染精細
function b64toBlob(b64Data, contentType, sliceSize) {
contentType = contentType || '';
sliceSize = sliceSize || 512;
var byteCharacters = atob(b64Data);
var byteArrays = [];
for (var offset = 0; offset < byteCharacters.length; offset += sliceSize) {
var slice = byteCharacters.slice(offset, offset + sliceSize);
var byteNumbers = new Array(slice.length);
for (var i = 0; i < slice.length; i++) {
byteNumbers[i] = slice.charCodeAt(i);
}
var byteArray = new Uint8Array(byteNumbers);
byteArrays.push(byteArray);
}
var blob = new Blob(byteArrays, {type: contentType});
return blob;
}
var blob = b64toBlob(base64Data, 'image/jpeg');
console.log(blob)
https://jsfiddle.net/wfh5fjn9/
變種base64ImageContent = base64.replace(/ ^數據:圖像\ /(PNG | JPG); BASE64,/ ,「」);爲什麼這不起作用? –
因爲它應該是'(png | jpg | jpeg)' – jperezov
會不會有像gif? –