Error: Function has not been properly defined

I need help creating a dynamic rotating DIV that changes automatically. I've implemented a switchRotator(id) function using JQuery to update the content of the DIV. However, I'm encountering an error with this function:

function launchTimedRotator(){

//timedSwitch is a boolean variable that can be toggled with buttons

if (timedSwitch) {

    if (counter<2) {
        counter++;
    } else {
        counter = 1;
    }

switchRotator(counter);
setInterval("launchTimedRotator()",3000);
return null;
}

};

I'm attempting to achieve recursion by having the function call itself at the end. But I'm running into an issue where Google Chrome's Developer Tools shows: Uncaught ReferenceError: launchTimedRotator is not defined

Your assistance would be greatly appreciated.

Answer №1

A better way to handle timing in JavaScript is to avoid using strings with the setInterval() function. Instead, opt for an anonymous function like this:

setInterval(function() {
    launchTimedRotator();
}, 3000);

Using setInterval might not be the best choice as it can create multiple instances of intervals over time. You may want to consider using setTimeout instead.

Both setInterval() and setTimeout() can achieve the same effect;

With setInterval, it would look like setInterval(function() {}, 3000), while with setTimeout it would be something like:

function runTimeout() {
    setTimeout(function() {
        runTimeout();
    }, 3000);  
}

Personally, I find setTimeout() to be more reliable and easier to manage.

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