Java script file download wait for complete

 · The above code works perfectly with very large files (i.e. “out of loop” is only printed after download is complete). But when the file size is small, the “out of loop” string is printed.  · Async Await JavaScript Tutorial – How to Wait for a Function to Finish in JS. Fredrik Strand Oseberg. JavaScript starts at the top of the file and runs through code line by line, until it is done. The result of this design decision is that only one thing can happen at any one time.  · One option to leverage the unknown waiting time is to load the file in memory first as a Blob, then use an (or msSaveOrOpenBlob in IE) to download it from the memory. This way, you would avoid the fetching time, but you will still don't know exactly what happens after the user has been shown the download dialog.

Async Await JavaScript Tutorial - How to Wait for a Function to Finish in JS. Fredrik Strand Oseberg. JavaScript starts at the top of the file and runs through code line by line, until it is done. The result of this design decision is that only one thing can happen at any one time. Now if you try to use for loop on myitems array and call itemRunner, it will not wait itemRunners response. It will just call and move to next time and print 1,2,3 in console after three seconds. But we don't want this. We want to process the array in sequence and wait for the current item to finish it's process and then move to next item. However recently they added speed limits to downloading files. I increased the sleep time but then everything else takes too long, there are a lot of files to download and some are very small. I want to remove the sleep wait time or set it very low and modify the script so that it will wait for the file to finish downloading. EDIT.

When ever we click on download, based on the file size and network we need to wait for specific to complete download operation. If not we may encounter issues as the file is not downloaded. We can also make use of 'Java Watch Service API' which monitors the changes in the directory. Note: This is compatible with Java 7 version. One option to leverage the unknown waiting time is to load the file in memory first as a Blob, then use an (or msSaveOrOpenBlob in IE) to download it from the memory. This way, you would avoid the fetching time, but you will still don't know exactly what happens after the user has been shown the download dialog. The above code works perfectly with very large files (i.e. “out of loop” is only printed after download is complete). But when the file size is small, the “out of loop” string is printed.