Python to restore the string encoded by the JavaScript escape function, pythonescape

Python to restore the string encoded by the JavaScript escape function, pythonescape

If you encounter a problem, you need to use Python to restore the escape in JavaScript. However, after a long time, you have not found the answer, so you have to study the solution in depth.
Let's take a look at the encoding of a text section of escape in js.
Copy codeThe Code is as follows:
A = escape ('this is a string of text ');
Alert ();

Output:
Copy codeThe Code is as follows:
% U8FD9 % u662F % u4E00 % u4E32 % u6587 % u5B57

At first glance, it seems a bit similar to the json format. Let's take a look at the man with the same standard json format encoding "this is a string of text"
Copy codeThe Code is as follows:
# Encoding = UTF-8
Import json
A = 'this is a string of text'
Print json. dumps ()

Output:
Copy codeThe Code is as follows: "\ u8fd9 \ u662f \ u4e00 \ u4e32 \ u6587 \ u5b57"
After comparison, in fact, each man in js escape encoding is a "% u" symbol plus a four-character encoding, while each man in json encoding is a "\ u" symbol plus a four-character encoding, in this case, we can use the string replacement operation to restore the json format, and then use the json module loads.
Copy codeThe Code is as follows:
# Encoding = UTF-8
Import json
 
# Js escape string Encoding
C = '% u8FD9 % u662F % u4E00 % u4E32 % u6587 % u5B57'
 
# Restore a Json object
JsonObj = '"' +" ". join ([(I and" \ "+ I) for I in c. split ('%')]) + '"'
 
Print json. loads (jsonObj)

In particular, after replacing "%" with the "\" symbol, you must use double quotation marks to pack the string to make it a json object and then use json. loads.
Later, I found a simpler method on a website. The Code is as follows:
Copy codeThe Code is as follows:
# Encoding = UTF-8
C = '% u8FD9 % u662F % u4E00 % u4E32 % u6587 % u5B57'
Print "". join ([(len (I)> 0 and unichr (int (I, 16) or "") for I in c. split ('% U')])

In fact, the idea is similar. Replace "% u", and the rest are 4 characters of Fixed Length Encoding. Finally, unichr uncodes back the Chinese characters.

How to translate the characters compiled by the escape Function in JavaScript?

First define a function code as follows
Function aa ();
{
Var a = unescape (string content );
}

Run the following statement to run the function:
Confirm (aa ());

That's all.

Functions of the escape () function in JavaScript

The escape () function can encode a string so that the string can be read on all computers.
Instance
In this example, we will use escape () to encode the string:
<Script type = "text/javascript">

Document. write (escape ("Visit W3School! ") +" <Br/> ")
Document. write (escape ("?! = () # % &"))

</Script>
Output:
Visit % 20W3School % 21
% 3F % 21% 3D % 28% 29% 23% 26
Reference: www.w3school.com.cn/js/jsref_escape.asp