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setMutationHandler

MutationObserver wrapper to wait for the specified CSS selector

2016-07-22 기준 버전입니다. 최신 버전을 확인하세요.

이 스크립트는 직접 설치하는 용도가 아닙니다. 다른 스크립트에서 메타 지시문 // @require https://update.greatest.deepsurf.us/scripts/12228/137548/setMutationHandler.js을(를) 사용하여 포함하는 라이브러리입니다.

작성자
woxxom
버전
2.0.7
생성일
2015-09-05
갱신일
2016-07-22
크기
2.16KB
라이선스
해당 없음

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==