Javascript in while loop not changing anything until the loop finished

Question

I have 2 seperate files.

The iframe executes the changePercent command in the parent window, but it doesn't change the number instantly, it is only changed after the loop finished. Is there any way to fix this? Need this for a progress bar thingy.

Thanks in advance!

This is the file I open in my browser

<span id="test">1</span><br />
<iframe src="script.php?league=Nemesis"></iframe>

<script type="text/javascript">
function changePercent(val) {
    document.getElementById("test").innerHTML=val;
}
</script>

This is the embedded iframe

<?php set_time_limit(0);
include('../assets/includes/functions.inc.php'); ?>
<?php
$i = 0;
$step = 200;
$end = 15000 - $step;
$league = $_GET['league'];
$found = false;
$status = false;

while ($found == false && $i < $end) {
    if($i < $end) { $i = $i + $step; }
    $ladder = file_get_contents("http://api.pathofexile.com/ladders/".$league."?limit=".$step."&offset=".$i);

    $ladder = str_replace('"online":false', '"online":"no"', $ladder);
    $ladder = str_replace('"online":true', '"online":"yes"', $ladder);

    $json = json_decode($ladder, true);
    foreach ($json['entries'] as $address) {
        if($address['online'] = "yes") {
            $status = true;
            // do something
        }
    }

    ?>
    <script type="text/javascript">
        parent.changePercent('<?php echo $i ?>');
    </script>
    <?php
}
?>

Dima · Accepted Answer · 2014-01-30 23:11:34Z

2

php is a server side language. when the php runs the while loop, that means the browser is still waiting for page data, and it will be sent to the browser only when the php is finished. in your changePercent you have a php code that is located AFTER the while loop, so it will run the while loop before it can evaluate the php inside the changePercent

so there is no "fix", you should just learn the basics of web programming

edited Jan 30, 2014 at 23:11

answered Jan 30, 2014 at 23:04

Dima

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2 Comments

What Over a year ago

Thank you, this makes sense. Also, thank you for killing my ego.

Dima Over a year ago

lol, didnt mean to kill your ego :) . accept the answer if that answered your question

Loothelion · Accepted Answer · 2014-01-30 23:08:22Z

0

You're exiting out of the PHP loop when you use ?> try the following code segment.

echo '<script type="text/javascript"> parent.changePercent(' .  $i .'); </script>';

This will tell PHP to print out that line for each time your loop executes through.

answered Jan 30, 2014 at 23:08

Loothelion

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1 Comment

Dima Over a year ago

that have nothing to do with it

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