【发布时间】：2018-09-21 03:54:09
【问题描述】：
我在将图像转换为base64时遇到问题，它转换得很好，但是当我尝试使用base64打开时，图像根本不出来，我不知道我遇到了什么问题。
<img id="imageid" src="http://localhost:8000/media/db.png" alt="">
getBase64Image() {
var data = document.getElementById("imageid");
html2canvas(data).then(canvas => {
var imgconverted = canvas.toDataURL("data:image/jpeg;base64");
console.log(imgconverted, 'base64');
});
}
这个结果应该很好，但是我在浏览器中打开它，图像并没有只出现一个框架。
data:image/png;base64,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
无论遇到什么问题，我都希望你能帮助我。
【问题讨论】：
-
看起来转换后的图像实际上正在显示，但它是一个白色方块..
-
如果准确的话，它只会出现白色但实际上图像不是白色的，当我使用例如base64-image.de这个页面时，它会将图像很好地转换为base64
标签： javascript typescript canvas base64 angular5