IE doesn't refresh the screen when a function is running

[lmmoreira]

Hi there, I have a cole like this:

function cCarregar(){
var div = document.createElement('div');
div.id = 'backCarrega';
div.className = 'back';
document.getElementById('lpDivs').appendChild(div);

var img = document.createElement('input');
img.type = 'image';
img.className = 'carregando';
img.src = 'carregando.png';
div.appendChild(img);
img.focus();
}

This is a function that shows a DIV with the text "Loading" on it.

I use it like this:
function carregar(procedure, inicio){
cCarregar()
var lista = $.ajax({url: '../PHP/sqlS.php', type:'POST', data:"sql=Select RESULT from "+procedure+"('"+codorganizacao+"','"+toJS(inicio)+"')", async:false, success:function(){}}).responseText;
carregaSelect(select1, lista, 0);
destroyCarregar()
}

When that code runs on Firefox it goes fine, but, on IE that the loading DIV doesn't appear.
When I wrote a alert("teste"); after img.focus(); on cCarregar(), it appeared.

I think IE can't refresh the screen to show the DIV.

How can I deal it ?

Thanks, sorry about my english, I'm from Brazil and I'm just learning.

 

[LarrySteele]

I had a similar problem with one of my pages and I used JavaScript's setTimeout() function:

http://www.w3schools.com/js/js_timing.asp.

This function takes two arguments: the function you want to run and the milliseconds you want to wait. Here's an example of how to delay calling cCarregar() for two seconds:

[tt]
function carregar(procedure, inicio){
setTimeout(cCarregar(),2000);
[/tt]


Hope this helps,
Larry

 

[Kirsle]

Actually it should be:

function carregar(procedure, inicio){
     setTimeout("cCarregar()",2000);

The statement in setTimeout should be a string. Without the quotes, the function "cCarregar()" is actually executed while the "setTimeout()" is executed, and the results of the cCarregar function would be placed in the statement side of setTimeout... not the function itself.

e.g. if cCarregar() returns "hello world", then these would be the same:

setTimeout(cCarregar(),2000);
setTimeout("hello world",2000);

So put quotes around it. ;-)

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perl -e '$|=$i=1;print" oo\n<|>\n_|_";x:sleep$|;print"\b",$i++%2?"/":"_";goto x;'

 

[LarrySteele]

Oops! Thanks for catching the missing quotes.

 

[lmmoreira]

this way, the code:

function carregar(procedure, inicio){
setTimeout("cCarregar()",2000);
.
.
$.ajax ...
}

would wait 2 sec to be started correct?

But, there is a problem... I can't define 2 sec, because I don't know if It is 2 sec or 10 sec. It depends of the data to be loaded.

 

[BillyRayPreachersSon]

Actually it should be ...

Actually, it didn't need to be. Both setTimeout and setInterval can take either a string or a function reference as their first parameter.

Dan



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[BillyRayPreachersSon]

Of course, if you omit the quotes, you have to omit the brackets as well, otherwise (as you mention) the function will execute immediately.

So this would also be fine:

setTimeout(cCarregar, 2000);

Dan



Coedit Limited - Delivering standards compliant, accessible web solutions

Dan's Page [blue]@[/blue] Code Couch:

http://www.codecouch.com/dan/

Code Couch Tech Snippets & Info:

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[feherke]

Hi

lmmoreira, what will happen if someone/something rewrites the function on the fly ? Will this be also executed ?

function carregar(procedure, inicio)
{
  cCarregar()
  var lista = $.ajax({url: '../PHP/sqlS.php', type:'POST', data:"sql=[red]drop function[/red] "+procedure, async:false, success:function(){}}).responseText;
  carregaSelect(select1, lista, 0);
  destroyCarregar()
}

Ignore the fact that I do not research on which SQL language are you using, so the syntax may be incorrect.

Feherke.

http://rootshell.be/~feherke/

 

[lmmoreira]

If someone do It, the table in procedure will be deleted....
but the "Loading" Screen would still not appear.

 

[lmmoreira]

actualy, even with the setTimeout, It stills, not showing...

KILLLLLLLLLLLLLLLLLLL IE