javascript - shuffle HTML list element order
html, html-lists, javascript
Solution
var ul = document.querySelector('ul');
for (var i = ul.children.length; i >= 0; i--) {
ul.appendChild(ul.children[Math.random() * i | 0]);
}
This is based on Fisher–Yates shuffle, and exploits the fact that when you append a node, it's moved from its old place.
Performance is within 10% of shuffling a detached copy even on huge lists (100 000 elements).
http://jsfiddle.net/qEM8B/
Problem
I have a list: ``` <ul> <li>milk</li> <li>butter</li> <li>eggs</li> <li>orange juice</li> <li>bananas</li> </ul> ``` Using javascript how can I reorder the list items randomly?