Parse JavaScript with jsoup

html, java, javascript, jsoup, kotlin

Solution

Since jsoup isn't a javascript library you have two ways to solve this:

A. Use a javascript library

Pro:

- Full Javascript support

Con:

- Additional libraray / dependencies

B. Use Jsoup + manual parsing

Pro:

- No extra libraries required

- Enough for simple tasks

Con:

- Not as flexible as a javascript library

Here's an example how to get the `key` with jsoupand some "manual" code:

Document doc = ...
Element script = doc.select("script").first(); // Get the script part


Pattern p = Pattern.compile("(?is)key=\"(.+?)\""); // Regex for the value of the key
Matcher m = p.matcher(script.html()); // you have to use html here and NOT text! Text will drop the 'key' part


while( m.find() )
{
    System.out.println(m.group()); // the whole key ('key = value')
    System.out.println(m.group(1)); // value only
}

Output (using your html part):

key="pqRjnA"
pqRjnA

Problem

Original source