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joaquinelio 2021-04-05 02:26:17 -03:00 • committed by GitHub
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@ -74,7 +74,7 @@ link.href = URL.createObjectURL(blob);
We can also create a link dynamically in JavaScript and simulate a click by `link.click()`, then download starts automatically.
Here's the similar code that causes user to download the dynamicallly created `Blob`, without any HTML:
Here's the similar code that causes user to download the dynamically created `Blob`, without any HTML:
```js run
let link = document.createElement('a');
@ -186,7 +186,7 @@ let context = canvas.getContext('2d');
context.drawImage(img, 0, 0);
// we can context.rotate(), and do many other things on canvas
// toBlob is async opereation, callback is called when done
// toBlob is async operation, callback is called when done
canvas.toBlob(function(blob) {
// blob ready, download it
let link = document.createElement('a');
@ -235,7 +235,7 @@ That makes Blobs convenient for upload/download operations, that are so common i
Methods that perform web-requests, such as [XMLHttpRequest](info:xmlhttprequest), [fetch](info:fetch) and so on, can work with `Blob` natively, as well as with other binary types.
We can easily convert betweeen `Blob` and low-level binary data types:
We can easily convert between `Blob` and low-level binary data types:
- We can make a Blob from a typed array using `new Blob(...)` constructor.
- We can get back `ArrayBuffer` from a Blob using `FileReader`, and then create a view over it for low-level binary processing.