title: Extract json data from string using regex
body: <p>I have data string like below:</p>
  
  <pre><code>....
  data=[{"CaseNo":1863,"CaseNumber":"RD14051315","imageFormat":"jpeg","ShiftID":241,"City":"Riyadh","ImageTypeID":2,"userId":20}]
  --5Qf7xJyP8snivHqYCPKMDJS-ZG0qde4OqIyIG
  Content-Disposition: form-data
  .....
  </code></pre>
  
  <p>I want to fetch json data from above string. How can I use regex to find that part of string? I tried with finding indexOf("data=[") and indexOf("}]") but its not working fine and proper way to do.</p>