HTML page loading JS script download is garbled (file encoding format)

Problem Description:

In a index.html Web page, a jquery script was introduced, but an error occurred, prompting $ is not defined

<! DOCTYPE html>  Window.onload=function  () {Console.log ($);    //$ is not defined }</body>
In the console, it is found that jquery returns a garbled format, so the above error occurs.
Under normal circumstances, this should be the case:
The cause of this error is the encoding of the file, in Notepad open jquery file discovery, the file is encoded in UCS-2 Little endian format, it is converted to UTF-8 format, it can load normally.
File Encoding Format reference:
Http://www.cnblogs.com/joeblackzqq/archive/2011/04/11/2012005.html
HTML page loading JS script download is garbled (file encoding format)