工作中经常遇到需要将Base64编码转换为实际文件的需求？别担心，今天就教大家如何用JavaScript搞定！💻第一步，让我们来看看如何将Base64字符串转换成PDF文档👇：

```javascript

function base64ToPdf(base64) {

const link = document.createElement('a');

link.href = `data:application/pdf;base64,${base64}`;

link.download = 'document.pdf';

link.click();

}

```

是不是很简单？接着，如果想把Base64转成图片并保存到本地，也很容易哦👇：

```javascript

function base64ToImage(base64) {

const img = new Image();

img.src = `data:image/png;base64,${base64}`;

img.onload = () => {

const canvas = document.createElement('canvas');

canvas.width = img.width;

canvas.height = img.height;

const ctx = canvas.getContext('2d');

ctx.drawImage(img, 0, 0);

const link = document.createElement('a');

link.href = canvas.toDataURL('image/png');

link.download = 'image.png';

link.click();

};

}

```

两步搞定！快试试吧，让工作更高效！🚀