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setMutationHandler

MutationObserver wrapper to wait for the specified CSS selector

Verzia zo dňa 11.02.2017. Pozri najnovšiu verziu.

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/12228/174471/setMutationHandler.js

Autor
woxxom
Verzia
3.0.0
Vytvorené
05.09.2015
Aktualizované
11.02.2017
Veľkosť
3,1 KB
Licencia
neuvedené

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 
});

  • The observation target parameter may be omitted so "document" will be used by default:

    setMutationHandler('.container p.some-selector', function(nodes) { ...... });

  • Process existing elements and set a mutation handler for the future ones

    processExistingAndSetMutationHandler('a', processLinks);

  • 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 
});

  • 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==