https://tech.torico-corp.com/blog/bookmarklet/にあったコード

destorypage.js

var divs = document.getElementsByTagName('div');
var mode = Math.floor(Math.random() * 2);
for (var i = 0; i < divs.length; i++){
  var delay = Math.random() * 1000;
  var d = divs[i];
  setTimeout(function(d) {
   if (d){
    var t = Math.floor(Math.random() * 2000 + 1000);
    d.style.transition = "all " + t +"ms ease-in";
    var deg = Math.random() * 30 - 15;
    d.style.transform = "translate(0, 800px) rotate(" + deg + "deg)";
  }
  }, delay, d);
}