MutationObserver wrapper to wait for the specified CSS selector
Verzia zo dňa
Tento skript by nemal byť nainštalovaný priamo. Je to knižnica pre ďalšie skripty, ktorú by mali používať cez meta príkaz // @require https://update.greatest.deepsurf.us/scripts/12228/137072/setMutationHandler.js
A MutationObserver wrapper to wait for an element (or elements) with the specified CSS selector.
First, load the function in your script metablock:
.............. // @require https://greatest.deepsurf.us/scripts/12228/code/setMutationHandler.js .............. // ==/UserScript==
Watch for added nodes:
setMutationHandler(document, '.container p.some-selector', function(nodes) {
nodes.forEach(function(node) {
node.style.display = 'none';
});
//this.disconnect(); // stop observing
return true; // continue enumerating current batch of mutations
});
Watch for added nodes only inside the specified container element that already exists in the document:
setMutationHandler(document.querySelector('.container-selector'), '.some-selector', function(nodes) {
nodes.forEach(function(node) {
node.style.display = 'none';
});
//this.disconnect(); // stop observing
return true; // continue enumerating current batch of mutations
});
Advanced example with customized options to watch for changes in the title attribute:
setMutationHandler(document, '.some-selector', processNodes, {
attributes: true, attributeFilter: ['title'],
subtree: true
});
function processNodes(nodes, mutation) {
console.log('Node %O changed title from "%s" to "%s"',
nodes[0], mutation.oldValue, nodes[0].title);
});
//this.disconnect(); // stop observing
return true; // continue enumerating current batch of mutations
});
You may want to make your userscript run at document-start to catch the mutations during page load:
.............. // @run-at document-start // @require https://greatest.deepsurf.us/scripts/12228/code/setMutationHandler.js .............. // ==/UserScript==