wiki:ajaxS3

Version 3 (modified by Serge Sunneach, 12 years ago) ( diff )

the broken link to lp corrected

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ajaxS3 - the real world connectivity tool

When there is too much data to download, or the connection is slow, or the server is busy or all of the above,

  1. the user would prefer to monitor the browser-server dialogue;
  2. the browser would need to re-submit the Ajax request again in the case of timeout.

The ajaxS3 covers these needs. The demo is available.

This is a jQuery plugin residing in the S3.js, which works transparently as a regular ajax handle, but behind the scenes:

  1. It shows the flashing message that the download is started
  2. It sets up the timeout and re-tries the request several times if the timeout is triggered
  3. It displays the status and errors in the custom StatusBar

That way the user always feels and stays in control.

How to use the ajaxS3?

The standard handles have been provided: getS3, getJSONS3, postS3, and the ajaxS3 itself.

getJSONS3

$.getJSONS3(url, callback)
$.getJSONS3(url, callback, message)
$.getJSONS3(url, data, callback) 
$.getJSONS3(url, data, callback, message)

These calls will get the JSON from the URL and use the provided callback when successful.

callback(theJSON_you_need, status)

getS3

It is the same as getJSONS3, but now the type can be 'html' (the type='json' makes it equivalent to getJSONS3):

$.getS3(url, callback, type)  
$.getS3(url, callback, type, message)
$.getS3(url, data, callback, type)
$.getS3(url, data, callback, type, message)

postS3

The same as getS3, but now the request goes through the POST tunnel:

$.postS3(url, callback, type)  
$.postS3(url, callback, type, message)
$.postS3(url, data, callback, type)
$.postS3(url, data, callback, type, message)

Why the message argument?
The call $.getJSONS3(url, callback) will show status something like:

"getting form data..."
"getting form data... retry 1"
...

And the call $.getJSONS3(url, callback, 'line items') will show:

"getting line items..."
"getting line items... retry 1"
...

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