| <!DOCTYPE html> | |
| <html> | |
| <script> | |
| function test() { | |
| sel = document.getElementById("sel"); | |
| sel.selectedIndex = 49; | |
| sel.selectedIndex = -1; | |
| } | |
| </script> | |
| <body onload="test()"> | |
| <select multiple id="sel" style="width:500px; height:300px;"></select> | |
| <script> | |
| sel = document.getElementById("sel"); | |
| for (var i = 0; i < 50; i++) { | |
| option = document.createElement("option"); | |
| option.innerHTML = "Option " + i; | |
| sel.appendChild(option); | |
| } | |
| </script> | |
| </body> | |
| </html> |