setMutationHandler

MutationObserver wrapper to wait for the specified CSS selector

Version au 10/02/2017. Voir la dernière version.

Ce script ne doit pas être installé directement. C'est une librairie destinée à être incluse dans d'autres scripts avec la méta-directive // @require https://update.greatest.deepsurf.us/scripts/12228/174269/setMutationHandler.js

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Auteur: woxxom
Version: 2.1.0
Créé: 05/09/2015
Mis à jour: 10/02/2017
Taille: 2,26 ko
Licence: N/A

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';
    });
    return false; // stop observing 
});

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';
    });
    return false; // stop observing 
});

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) {
    console.log(nodes);
    //return false; // stop observing 
});

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==