setAttribute("as", "script") in chrome 51.0.2704.84 window7 messy code

[zhangzhige]

when i use LAB3.0 in my website ,in chrome 51.0.2704.84 window7 it will messy code when the js contain chinese.like this:

I found this problem arises from setAttribute("as", "script")。when i change this tag with another name，it solve。what happend？