☰

Greasy Fork is available in English.

setMutationHandler

MutationObserver wrapper to wait for the specified CSS selector

Versão de: 10/02/2017. Veja: a última versão.

Este script não deve ser instalado diretamente. Este script é uma biblioteca de outros scripts para incluir com o diretório meta // @require https://update.greatest.deepsurf.us/scripts/12228/174269/setMutationHandler.js

Autor
woxxom
Versão
2.1.0
Criado
05/09/2015
Atualizado
10/02/2017
Tamanho
2,26 KB
Licença
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==