title: Is there any accurate implementation of IRR and PMT function in JavaScript?
body: <p>I'm developing a new web-based financial application for our company that provides online real-time non-post-back calculation of IRR, and PMT. So, I'm looking for the implementation/library which provides the IRR and PMT functionality in JavaScript. Please kindly suggest.</p>
  
  <p>Thanks</p>
  
  <p>William</p>