Escape coding and Unescape decoding Chinese characters ' garbled solutions _javascript tips

Today's project encountered the need to use JavaScript escape encoding Chinese characters and then use unescape decoding, the test Code section when there is a garbled situation.
The details are as follows:
First, open the test page with EditPlus test.html and edit the following HTML code:

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
 
 

Page printout:

%ufffd%u0171%ufffd%u05ae%ufffd%ufffd

At this point you can see that the situation is not right, the number of characters corresponding to the character is already wrong!
Use the following code to test the unescape decoded characters:

var relstr=unescape ("%ufffd%u0171%ufffd%u05ae%ufffd%ufffd");
document.write (RELSTR);

There are garbled: Ű֮

Workaround:
With Dreamweaver open test.html file, found the problem!
The original part of the

var teststr=escape ("cloud-dwelling community");

into a

var teststr=escape ("Ű֮");

Visible is caused by the editor's initial encoding!
In Dreamweaver, the Chinese character is changed back, the test.html is rerun, and the corresponding code is obtained:

%u811a%u672c%u4e4b%u5bb6

Then use Unescape to decode:

var relstr=unescape ("%u811a%u672c%u4e4b%u5bb6");
document.write (RELSTR);

Get the original correct Chinese characters: cloud-dwelling community!