example does not work in IE9

[warvenSniper]

Working example here: http://jsfiddle.net/MoonScript/Q7bVG/show/. I tried this example in IE9, but got the error in the console:
SCRIPT5007: 无法获取属性“triggerType”的值: 对象为 null 或未定义
embed.js?update_24_11_2017_2, 行87 字符7