javascript - 如何在Javascript中将base64作为图像存储在文件系统中

Question

如上所述，我如何存储在文件系统中？

我已经尝试过这些解决方案，但仍然没有得到正确的结果...... https://gist.github.com/madhums/e749dca107e26d72b64d#file-base64-image-upload-js-L7 https://www.google.com.sg/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwiC-_K2yIPOAhVJRY8KHUq5D4oQFggcMAA&url=http%3A%2F%2Fstackoverflow.com%2Fquestions%2F17397319%2Fsave-canvas-as-jpg-to-desktop&usg=AFQjCNGADOLxAdsduTuK6d-ZcVzZRgGwWg&sig2=UPC0l9bSsPGASnCrM94unA

我需要保存的内容看起来像这样。

Object {imageFormat: "image/jpeg", imageB64: "/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAMCAgICAgMCAgIDAw…J3kdq5LxJM7X8ik5CyMB+dFFOPxGNT4DNJOetFFFbnCf/2Q=="}imageB64: "/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAMCAgICAgMCAgIDAwMDBAYEBAQE...+dFFOPxGNT4DNJOetFFFbnCf/2Q=="imageFormat: "image/jpeg"__proto__: Object__defineGetter__: __defineGetter__()__defineSetter__: __defineSetter__()__lookupGetter__: __lookupGetter__()__lookupSetter__: __lookupSetter__()constructor: Object()hasOwnProperty: hasOwnProperty()isPrototypeOf: isPrototypeOf()propertyIsEnumerable: propertyIsEnumerable()toLocaleString: toLocaleString()toString: toString()valueOf: valueOf()get __proto__: __proto__()set __proto__: __proto__()

将整个对象复制到那里..

刚刚学习 JavaScript，所以请尽可能详细。

Answer 1

您可以使用 javascript 在新选项卡中打开 base64:

window.location="data:image/jpeg;base64,ehfnshxfbsnxj";

要让浏览器自动下载它，请使用在 SO 上找到的代码片段:

var link = document.createElement('a');  
link.href = 'data:image/jpeg;base64,sduebdueb'; link.download = 'coolimage.jpg';
document.body.appendChild(link);
link.click();