setMutationHandler

MutationObserver wrapper to wait for the specified CSS selector

Verze ze dne 13. 10. 2015. Zobrazit nejnovější verzi.

Tento skript by neměl být instalován přímo. Jedná se o knihovnu, kterou by měly jiné skripty využívat pomocí meta příkazu // @require https://update.greasyforks.org/scripts/12228/80017/setMutationHandler.js

Autor
woxxom
Verze
2.0.4
Vytvořeno
05. 09. 2015
Aktualizováno
13. 10. 2015
Size
1,7 KB
Licence
neuvedeno

MutationObserver wrapper to wait for an element (or elements) with the specified CSS selector.

First, load the function in your script metablock:

..............
// @require       https://greasyforks.org/scripts/12228/code/setMutationHandler.js
..............
// ==/UserScript==

Usage (single node, one-time change):

setMutationHandler(document, '.container p.some-child', function(nodes) {
    nodes[0].remove();
    this.disconnect(); // disconnect the observer, this is useful for one-time jobs
});

Usage (multiple nodes, the page is watched constantly for the added elements):

setMutationHandler(document, '.container p.some-child', function(nodes) {
    nodes.forEach(function(node) {
        node.style.display = 'none';
    });
    return true; // continue enumerating current batch of mutations
});

Usage (observe the changes only inside particular container element):

setMutationHandler(document.querySelector('.container-selector'), '.some-child', function(nodes) {
    nodes.forEach(function(node) {
        node.style.display = 'none';
    });
    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://greasyforks.org/scripts/12228/code/setMutationHandler.js
..............
// ==/UserScript==
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