What could be causing the delay in this script's execution?

I'm attempting to include a script at the beginning of my XBL file, however even the test below is not functioning. Any insight on why this might be happening?

<bindings xmlns="http://www.mozilla.org/xbl"
       xmlns:xbl="http://www.mozilla.org/xbl"
       xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">

 <script language="javascript" type="text/javascript"><![CDATA[
     while(true) {
      dump("OK");
     }
 ]]></script>

</bindings>

--update

The reason for this infinite loop is because I need a piece of code to continuously run. It's part of a communication process with an embedded system.

javascriptxbl

Answer №1

I'm not sure about XBL, but the issue with your code is that it contains an infinite loop without any stopping condition. This can cause JavaScript to crash.

To prevent this from happening, consider adding a stop condition or "fail-safe" mechanism such as breaking out of the loop after a set number of iterations, like 100,000. This will help avoid freezing the browser.

Answer №3

Although I'm not familiar with XBL, it seems like the current implementation may be causing the execution to block. Right now, everything is running synchronously, meaning that the interpreter will halt at the end of the while loop and wait for it to finish. Since this is an infinite loop, it will never complete. One solution could be:

window.setTimeout(function() {
    while(true) {
        console.log("OK");
    }
}, 1);

By starting the while loop asynchronously in this way, it should prevent blocking. Let me know if this resolves the issue.

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