| <!DOCTYPE html> | |
| <div style="height: 200px; width: 100px;"></div> | |
| <div id="target" style="background-color: green; width:100px; height:100px"></div> | |
| <div style="height: 200px; width: 100px;"></div> | |
| <script> | |
| document.createObserverCallback = function(entries) { | |
| return function(newEntries) { | |
| for (var i in newEntries) entries.push(newEntries[i]) | |
| }; | |
| } | |
| document.createObserver = function(callback) { | |
| return new IntersectionObserver(callback, {}); | |
| }; | |
| </script> |