Discussion on the technology of no-refresh uploading file in Drupal
There are several ways to implement a no-refresh upload file in the Web:
1. Use Formdata and FileReader in HTML5 to implement. However, this method can only be used after IE10.
2. Use the SWF file to do the relay.
3. Submit using a hidden iframe.
The above 2 and 3 are actually similar.
I found in Drupal 7 that the field Content-type as image can be uploaded without a flush.
I didn't know how it was done for half a day. My conclusion is that the first and second types can be excluded at this time. But the third I did not find the presence of an IFRAME within HTML.
Solving!
Thank you!
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You have the code, you don't know what's going on.
I don't have the code, how do I know what's going on?
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Baidu, Google a lot of things without refreshing upload, do not limit these three kinds of it! As you say, you've already ruled out the three kinds of possibilities, so ...
