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Groups > comp.lang.javascript > #36635

Re: Animation playing WHILE a form is submitted

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On Wednesday, 22 May 2019 15:52:39 UTC+5:30, Evertjan.  wrote:

> > However, after the user
> > *does* click "Submit", if the form submission has not taken place
> > correctly say, within 10 secs.,
> 
> So you are not form-submitting anything, just using the <form> format to 
> send something using a javascript script?
> 

Correct. It will be something like this:

     var subject = document.getElementById('subject').value;
     var message = document.getElementById('message').value;

     var queryString = "?subject=" + subject + "&message=" + message;
     ajaxRequest.open("GET", "http://localhost/sendmessage.php" + queryString, true);
     ajaxRequest.send(null);

(I've seen this code on the net - it IS correct, right? I mean, it IS the right way to do it??)




> >        request.send(null);
> >        setTimeout (function() {
> >          request.onreadystatechange=null; // to negate the handler
> >          alert("Message not sent");
> >}, 10000);
> 
> 1 The onreadystatechange is asynchronous by itself, I think you cannot 
> expact an immediate response.

I don't really understand what you're saying, and I REALLY want to be sure I've got this right - what I want to do is to cancel anything happening if the OTHER "onreadystatechange" handler is triggered -ie. if the message gets sent OK AFTER 10 secs - is "request.onreadystatechange=null;" the right way to do that??

> 
> 2 the alert() will stop any execution till responded to by enter or mouse-
> click
> 

Oh the "alert" is just illustrative - I won't be using any alerts in the production site :)



> Javascript is single-threaded.

Er - aren't there WebWorkers?


> 
> Perhaps you should just do your animation by CSS or Javaascript till the 
> onreadystatechange fires as okay.
> 
>   var xhttp = new XMLHttpRequest();
>   ...
>   let stopIt = setTimeOut(== STOP YOUR ANIMATION HERE IF TOO LONG ==, 5000);
>   
>   xhttp.onreadystatechange = function() {
>      if (xhttp.readyState == 4 && xhttp.status == 200) {
>        == STOP YOUR ANIMATION HERE == ;
>        == RESET stopIt timeout == ;
>      };
>   };
>   
> 

Sorry I dont'get you - how do I stop the animation?? It has to play in a continuous loop until the "onreadystatechange" fires..? What does this line mean?:
let stopIt = setTimeOut..blah blah

And what does THIS mean?:
== RESET stopIt timeout == ;


> There is an excellent remedy for that: 
> 
> Go and study!
> Find out what others have done!
> Don't ask for ready-to-consume solutions!

By NO MEANS do I want a ready-to-consume solution - and I AM studying! :)

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Thread

Animation playing WHILE a form is submitted groovee@cyberdude.com - 2019-05-15 20:58 -0700
  Re: Animation playing WHILE a form is submitted groovee@cyberdude.com - 2019-05-21 05:18 -0700
    Re: Animation playing WHILE a form is submitted "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2019-05-21 22:38 +0200
      Re: Animation playing WHILE a form is submitted Julio Di Egidio <julio@diegidio.name> - 2019-05-21 14:40 -0700
        Re: Animation playing WHILE a form is submitted "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2019-05-22 00:07 +0200
      Re: Animation playing WHILE a form is submitted groovee@cyberdude.com - 2019-05-21 23:38 -0700
        Re: Animation playing WHILE a form is submitted "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2019-05-22 12:22 +0200
          Re: Animation playing WHILE a form is submitted groovee@cyberdude.com - 2019-05-22 06:05 -0700
            Re: Animation playing WHILE a form is submitted groovee@cyberdude.com - 2019-05-22 06:27 -0700
              Re: Animation playing WHILE a form is submitted "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2019-05-23 09:17 +0200
            Re: Animation playing WHILE a form is submitted Julio Di Egidio <julio@diegidio.name> - 2019-05-23 02:32 -0700
              Re: Animation playing WHILE a form is submitted Julio Di Egidio <julio@diegidio.name> - 2019-05-23 03:16 -0700
                Re: Animation playing WHILE a form is submitted groovee@cyberdude.com - 2019-05-24 04:24 -0700

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