A nice piece of code to use for A/B testing to look for a certain element every 50 milliseconds, execute the code when found, then clear the interval loop. If the element is not found the loop is interrupted after 15 seconds.
var ytTimeoutId;
window.onload = function() {
ytTimeoutId = setInterval(function() {
// Check for a specific element ID
if (document.getElementById('element')) {
// Do stuff
window.clearInterval(ytTimeoutId);
}
}, 50);
setTimeout(function() {
window.clearInterval(ytTimeoutId);
}, 15000);
}Change the interval ping value or the general timeout value (15 seconds) as you see fit.
Find more JavaScript tutorials, code snippets and samples here.
Previous article
Pure JavaScript tabbing functionality with linkable tabs
Next article
