How to extract predefined pattern from a string?

Question

Hello all,

Given the following string:

"<head></head><body>{"filesize":55312,"success":false,"msg":"incorrect-captcha-sol"}<div firebugversion="1.5.4" style="display: none;" id="_firebugConsole"></div></body>"

I need to extract the JSON string as follows:

{"filesize":55312,"success":false,"msg":"incorrect-captcha-sol"}

How should I do this?

Thank you

Answer 1

json = str.match(/([^<]+)/)[1];

Answer 2

A regular expression like

({[^}]+})

would work.

Try it out using RegExr.

Answer 3

 json = str.match(/(\{[^}]+\})/)[1];