Mucus is a package that can monitor target element for child elements being added or removed using MutationObservers. Just makes it all a bit cleaner (ironically) to use, whose idea were NodeLists anyway...
Listen to the target element for changes and report changes in the
listener function as an aggregated changes object (see below). The
fn returned from mucus to be called to stop mucus running.
Format of changes object:
added(an array of elements added to the target)removed(an array of elements removed fro the target)
var mucus = require('mucus');
var h = require('hyperscript');
var list = h('ul');
var testItem = h('li', 'A test item');
// monitor the list
var stopMonitoring = mucus(list, function(changes) {
console.log('added: ', changes.added);
console.log('removed: ', changes.removed);
});
// every 5s add an item to the dom and then remove it 500ms after
var timer = setInterval(function() {
list.appendChild(testItem);
setTimeout(list.removeChild.bind(list, testItem), 500);
}, 5000);
// stop monitoring after 30s
setTimeout(function() {
clearInterval(timer);
}, 30000);
document.body.appendChild(list);
/*
the script should produce the following output until the timer is cleared:
simple.js:8 added: [li]
simple.js:9 removed: []
simple.js:8 added: []
simple.js:9 removed: [li]
*/Copyright (c) 2015, Damon Oehlman damon.oehlman@gmail.com
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