Re: Single Page Applications

Kevin/Nathan



Kevin’s error is probably a classic AJAX error when launching multiple AJAX
requests where the results depends on each other.



Gent, AJAX runs async by default and javascript processing continues while
the AJAX requests are performed. That is why we have to put the javascript
that process the result into the AJAX object.



The statement >>> this.req.open(this.method, this.url, true); in function
ht_HttpReqObj <<< parm 3 (async) in .open should be changed to false that
means sync. It will slow things down but other javascript processing will
wait until the AJAX request is done and if it fails, it will lock the
client until a HTTP error is received (long wait).



Synchronous AJAX is a no go/bad design used in large scale because of
client lock ups so Nathan will need a general event handler that monitors
the status of the fired AJAX requests and then trigger the HTML rendering
when the AJAX requests that depends on each other has signal they are done.


On Fri, May 29, 2015 at 5:49 PM, Kevin Turner <
kevin.turner@xxxxxxxxxxxxxxxxxxxx> wrote:

Yes basically you are right - the individual function (or context) is a
markup that to all intents and purposes is xml (validated by an xsd)
containing references to JavaScript components and/or HTML elements. The
JavaScript components have options (attributes) that may be bound to
attributes of the data model.

Sent from my iPad

On 29 May 2015, at 17:30, Nathan Andelin <nandelin@xxxxxxxxx> wrote:

The way we do it, there is no HTML exchanged between the client and

server

... Just the data model (JSON) is exchanged, and the UI reacts to the
content via observers - basically events that get triggered when a data
element in the model changes.

It sounds like you may be using a <tag> language other than HTML, or a UI
defined by JSON or JavaScript instead of HTML. I suppose either approach,
including HTML has its pros and cons.
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