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setMutationHandler

MutationObserver wrapper to wait for the specified CSS selector

当前为 2015-09-12 提交的版本，查看 最新版本。

此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.greasyfork.icu/scripts/12228/73901/setMutationHandler.js

作者
woxxom
版本
1
创建于
2015-09-05
更新于
2015-09-12
大小
1.1 KB
许可证
暂无

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

First, load the function in your script metablock:

..............
// @require       http://greasyfork.icu/scripts/12228/code/setMutationHandler.js
..............
// ==/UserScript==

Usage (single node, one-time change):

setMutationHandler(document, '.container p.some-child', function(observer, nodes) {
    nodes[0].remove();
    observer.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(observer, nodes) {
    [].forEach.call(nodes, 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(observer, nodes) {
    [].forEach.call(nodes, 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       http://greasyfork.icu/scripts/12228/code/setMutationHandler.js
..............
// ==/UserScript==