[javascript] how to break/stop code if statement met on loop?

[kaizer01]

Hi

how to break/stop code if statement met on loop?
for example insde https://google.com/update.php?id=2 the page shows or output a text "Can't Update" and the loop for openNext() will stop?
it won't load the next array

https://google.com/update.php?id=3

Thanks

<iframe id='the_iframe'></iframe>

<script>
   
    var urls = [
'https://google.com/update.php?id=1',
'https://google.com/update.php?id=2',
'https://google.com/update.php?id=3',
'https://google.com/update.php?id=4'


];
function openNext(){
    document.getElementById('the_iframe').src = urls.shift();
    if(urls.length)setTimeout('openNext()',3000);
}
openNext();
</script>

 

[Hyperz]

If the condition is dependent on the contents of the iframe'd page you can't unless the iframe'd page has the same origin as the page containing the iframe. This prevents things like XSS attacks.

Same-origin policy - Security | MDN

The same-origin policy is a critical security mechanism that restricts how a document or script loaded by one origin can interact with a resource from another origin.

developer.mozilla.org

Cross-site scripting - Wikipedia

en.wikipedia.org

 

[kaizer01]

it has the same origin
what do you think is the best approach for this one?

edit: I just got the code in the StackOverflow, i think i'll just write it using php which is easier.

Thanks

 

[Hyperz]

Then check the content of the iframe document using document.getElementById('the_iframe').contentDocument

 

[-Fig-]

if (condition) {
     return
}

will break for loop